Colliery Training Report(SARPI PROJECT, ECL)

ABHISEK MAITY DEPT. OF MINING, ASANSOL POLYTECHNIC

1 Signature………………………..

INDEX

1. ACKNOWLEDGEMENT

2. INTRODUCTION

2.1. Overview of Shyamsundarpur Colliery, Sarpi Project

2.2. Location of the mine

2.3. Company Objective

2.4. Mission

2.5. Vision

2.6. Organizational Structure of Subsidiary Company upto Mine Level

2.7. Management Hierarchy of Shyam Sundarpur Colliery.

2.8. Management Structure of the Sarpi Project, Shyamsundarpur Colliery

3. HISTORY OF SHYAMSUNDARPUR COLLIERY

4. INDIAN COAL INDUSTRY

4.1. An Overview

4.2. A Preview of Coal India Limited

4.3. Companies under Coal India Limited

4.4. Coal Reserves in India

5. GEOLOGY OF SHYAMSUNDARPUR COLLIERY

5.1. General

5.2. Grade wise Classification of Manganese Ore

6. PRESENT STATUS OF WORKING

7. SURVEY

7.1. Bore Hole Data

7.2. Plan Proposed Layouts and BH Information’s

7.3. Plan Showing Village and Workings of Overlying & Underlying Seam

7.4. Seam details

8. METHOD OF WORKING

8.1. Development By Continuous Miner

8.1.1. CM Section Details

8.1.1.1. Continuous Miner

8.1.1.1.1. Specification of JOYCM 15 Coal Cutting Machine

8.1.1.2. Shuttle Car

8.1.1.2.1. Introduction

8.1.1.2.2. Design

8.1.1.2.3. Main Components of Shuttle Car

8.1.1.3. Feeder Breaker


8.1.1.3.2. Design

8.1.1.3.3. Specification



8.1.1.4. Ouad Bolter


8.1.1.4.2. General Specification

8.1.1.5. Load Centre

8.2. Development by LHD

8.2.1. Load Haul Dump(LHD)

8.3. Depillaring by Stowing

8.3.1. Side Discharge Loader(SDL)

8.3.2. Universal Drilling Machine(UDM)

9. PRODUCTION

9.1. During Training Time (July 2013 to October 2013)

9.2. Year Wise Production

9.3. Types of Support

9.4. Anchorage testing

10. WINDING ENGINE

11. SUPPORT

11.1. Permanent Support

11.1.1. Coal Pillar

11.1.2. Rock Bolt

11.2. Temporary Support

12. LIST OF SAFETY EQIPMENT IN SSPUR COLLIERY

13. DUAL HEIGHT, WATER DIVERTING ROCK BOLTING TELLTALE

13.1. Introduction

13.2. Reading Methods of Telltale

13.3. Interpretation

13.4. Action

14. VENTILATION

14.1. Ventilation and Environment Monitoring System

15. FIRE AND EXPLOSION

16. INUNDATION



ACKNOWLEDGEMENT

First of all, I would like to thank my family for providing everything such as money, to buy anything

that are related to this training and their advise, which was the most needed for this training. They also

supported me and encouraged me to complete the training so that I will not procrastinate in doing it.

Then I would like to thank to our respected Principal Sri. Saibal Aich of Asansol Polytechnic, Prof.

Aditya Majee (Training and Placement Officer, Asansol Polytechnic) for giving me and my friends

opportunity to complete vocational training at a mechanized underground coal mine like SHYAM

SUNDARPUR COLLIERY, SARPI PROJECT.

And I would like to thank my teachers, Prof. Abhijit Dutta (H.O.D, Mining Department, Asansol

Polytechnic), Prof N.J.Bhattacharjee (Lecturer, Mining Department, Asansol Polytechnic), Prof. Falguni

Banerjee (Lecturer, Mining Department, Asansol Polytechnic) for their consistent encouragement and

guidance.

I also convey my sincere respect and gratitude to Sri. Debabrata Halder (Colliery Manager, S.S.Pur

Colliery); Sri B.C.Pal (Sr.Manager, Strata, S.S.Pur Colliery); Sri U.K.Karmakar (V.T.Manager, S.S.Pur

Colliery); Sri. Rayees Alam (M.T., Mining, S.S.Pur Colliery); Sri Ranadeep Bhattacharjee (Asstt.

Manager, S.S.Pur Colliery); Sri. Debasis Sinha (Overman, S.S.Pur Colliery) for their consistent

encouragement and able guidance.

I am also thankful to my friends who were doing this training with me and sharing their ideas. They

were helpful that when we combined and discussed together, we had this task done.

Lastly, I offer my regards and blessings to all of those who directly or indirectly supported me in any respect during the completion of the training.

(ABHISEK MAITY) 4th Semester student of Mining Engineering

ROLL NO: D120061004-10844

ASANSOL POLYTECHNIC



2. INTRODUCTION

2.1. BRIEF HISTORY OF SHYAMSUNDERPUR COLLIERY

Name of the mine : Sarpi Project, SSPur Colliery

Address Of the Mine : P.O. Ukhra,P.S. Andal, Dist: Burdwan, Pin: 713363

Date of opening of the Mine : 5.12.1946 – ESP unit, M/S Sarpi Kajora Coal Co.

Name of the Owner : DIR(P&P), Eastern Coalfields Limited

History of change of ownership : None

Disputes of boundary, if any : No

2.2. LOCATION OF THE MINE

Shyamsundarpur colliery is constituent of Bankola Area, ECL. It consists of two units, ESP Unit & Sarpi Unit. East Sitalpur (ESP) Unit is situated Chak Banbohal,

Shyamsundarpur and Chka Jhanjra Mouza of P.S. Laudoha, and about 4 KM away from Ukhra Station. The colliery is linked with Andal-Ukhra-Jhanjra roadway and also connects to the G.T. road (NH-2) by an all weather pacca road and is about 10 KM

away from the colliery.



2.3. COMPANY OBJECTIVE

To optimize generations of internal resources by improving productivity of resources,

prevent wastage and to mobilize adequate external resources to meet investment need.

To maintain high standards of safety and strive for accident free mining of coal.

To lay due emphasis on aforestation, protection of environment and control of pollution.

To undertake detailed exploration and plan for new projects to meet the future coal

demand.

To modernize existing mines.

To develop technical know-how and organizational capability of coal mining as well as

beneficiation and undertake, wherever necessary, apply research and development work

related to scientific exploration as well as better utilization of coal.

To improve quality of life of employees and to discharge the corporate obligations to

society at large and the community around the coalfields in particular.

To provide adequate number of skilled manpower to run operations and impart

technical and managerial training for up gradation of skill.

To improve consumer satisfaction.

2.4. MISSION

The mission of Coal India Limited is to produce the planned quantity of coal efficiently

and economically with due respect to safety, conservation & quality.

2.5. VISION

To emerge from the position of domestic leader to leader to leading player in the energy

sector by adopting best practices from mine to market with due care to environmental

and social sustenance.

Our Safety Objective: is to achieve “Zero Harm Potential” in all mines and other establishments.



2.6. ORGANIZATIONAL STRUCTURE OF SUBSIDIARY COMPANY UP TO MINE LEVEL

2.7. MANAGEMENT HIERARCHY OF SHYAMSUNDARPUR

COLLIERY



2.8. MANAGEMENT STRUCTURE OF SHYAMSUNDER PUR COLLIERY

SL DESIGNATION NAME

1 Agent Sri Ajay Kumar Sharma

2 Manager Sri Debabrata Halder

3 Project Manager Sri Krupanidhi Majhi

4 Colliery Engineer Sri Mani Shankar Pandey

5 Safety Manager Sri Kabindra Prasad

6 Ventilation Officer Sri Tapan Kumar Banerjee

7 Project Engineer Sri Swapan Dasgupta

8 Production Manager Sri Bipin Chandra Pal

9 Strata Monitoring

Officer Sri Arindam Basu

10 Asstt. Manager

Sri Susanta. Biswas

Sri Janmejai Mahato

Sri Arbind Kumar Gupta

Sri Sunil Kumar

Sri Sanjoy Ghosh

Sri T.K. Ghoshal

Sri Pravin Agarwal

Sri Umesh Bhargava

Sri Dungar Singh Khiriya

Sri Raju Basak

Sri Debaditya Acharya

Sri Rayees Alum

Sri Tarun Ghoshal

Sri Sonnet Mondal

11 Engineer

Sri Mukti Pada Mukherjee

Sri Tarun Kanti Kar

Sri Ashok Kumar De

Sri Anup Kr Das

12 Survey Officer Sri Paresh Chandra Ghosh

13 Medical Officer Sri Asis Kumar Laha

14 Personnel Manager Sri Siraj Anwar

Ms Chandra Mallick

15 Finance Manager Sri Asit Baran Moadal

16 Civil Engineer Sri Azizur Rahaman

17 V.T. Manager Sri Uttam Kumar Karmakar



3. HISTORY OF SHYAMSUNDARPUR COLLIERY

Shyamsundarpur Colliery is constituent of Bankola Area, ECL. It consists of two units,

ESP Unit & Sarpi Unit. East Sitalpur (ESP) Unit is situated Chak Banbohal,

Shyamsundarpur and Chka Jhanjra Mouza of P.S. Laudoha and about 4 KM away from

Ukhra Station. The colliery is linked with Andal-Ukhra-Jhanjra roadway and also

connects to the G.T. road by an all weather pacca road and is about 10 KM away from the

colliery. The Durgapur Industrial Complex (SAIL) is about 20 KM by road to the South

East of the Area.

ESP unit of the colliery is working from 05.12.1946 established by M/S Sarpi Kajora

Coal Co. Limited. The mine was nationalized by coal authority on 31.01.1973.

SDL machine has been introduced on 23.02.2001 at RVII seam of ESP unit and RVIIB1

seam on 28.02.2001. LHD machine has been introduced at RVII seam on 15.07.2008.

Continuous Miner has been introduced on dated 28.08.2010. Presently the mine is loader

less. Modern Mechanized drilling machine UDM (Universal Drill machine) has been

introduced on and from at both RVII & RVIIIB1 seam.

The colliery has a mine lease hold area of 533 Hectors.



4. INDIAN COAL INDUSTRY

4.1. AN OVERVIEW

The Indian coal industry is the world’s third largest in terms of production and fourth

largest in terms of reserves. Around 70% of the total production is used for electricity

generation and the remaining by the steel, cement and other heavy industries.

The first coal mining operation commenced in 1774 in the Raniganj coalfield on the

banks of River Damodar.

Till independence, the Indian coal industry witnessed sporadic phases of growth. Since

the private sector followed unscientific methods, productivity was low. The Indian

government took steps to correct this and improve the working conditions in the nation’s

coal industry. All privately owned coal producing companies were nationalized under the

Coal Mines (Nationalization) Act.


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4.2. COAL INDIA LIMITED

Coal India Limited (CIL) as an organized state owned coal mining corporate came into

being in November 1975.

CIL today is the single largest coal producer in the world with 433 MT per annum.

Operating through 81 mining areas CIL is an apex body with 7 wholly owned coal

producing subsidiaries and 1 mine planning and Consultancy Company spread over 8

states of India.

CIL also manages 200 other establishments like workshops, hospitals etc. It also owns 26

technical & management training institutes and 102 Vocational Training Institutes

Centers.

It was granted the Maharatna recognition in April 2011.


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4.3. COMPANIES OF COAL INDIA LIMITED

4.4. COAL RESERVES IN INDIA


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5. GEOLOGY OF SHYAMSUNDER PUR COLLIERY :

5.1. GENERAL

This colliery has a mine lease hold area of 533 hectors. The general texture of the surface

ground is sand stone mixes with laterite boulder, moram at place and earth. The gradient

toward North East and South side of Ukhra Madhaiganj road is towards South East. There

are several workable seams namely RIX, RVIII T2, RVIII B1, RVII, RVIIA, RVI, RV &

RIV are lying within a depth varies from 35 mtrs. to 316.5 mtrs. and thickness varies

from 2.2 mtrs. to 8.35 mtrs.

The mining Block of the Colliery consists of three units, Sarpi Unit, East Sitalpur Unit

and South Bankola Unit within the mine block. Coal is being mined RVII and RVIIIB1

via series of belt conveyor.

6. PRESENT STATUS OF WORKING:

.


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7. SURVEY

7.1. BORE HOLE DATA


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7.2. PLAN PROPOSED LAYOUTS AND BH INFORMATION

7.3. PLAN SHOWING VILLAGE AND WORKINGS OF OVERLYING & UNDERLYING SEAM


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7.4. SEAM DETAILS

8. METHOD OF WORKING:

The present method of work consists of depillaring with stowing in Jambad Bottom (RVIII B1)

seam by manually. At Bankola (RVII) seam developed by Board & Pillar method with

combination of LHD & Belt Conveyor and Continuous Miner, Shuttle Car, Quad Bolter, Feeder

Breaker and Belt Conveyors combination on Room & Pillar method. Economics of this mine has

been improved excellently. Recently the manual section is converted into mechanized SDL and

coal tub combination.

SEAM PARTING

(in mts.) GRADE

THICKNESS

(in mts.)

DEPTH (In

Mtrs)

GEOLOGICAL RSERVED

(Million Te)

MINEABLE RSERVED

(Million Te) PRESENT

STATUS GRADIENT

VIRGIN SOP TOTAL VIRGIN SOP TOTAL

RIX ----- "G4" 2.1 35.3 ---- ---- ---- ---- ---- ---- Exhausted 1 IN 25

RVIII T2 28.87 "G4" 3.03 64.17 ---- 1.36 1.36 ---- 0.95 0.95 Standing

on pillar 1 IN 22.5

RVIII B1 3.00-18.00

"G4" 4.65 70.20 ---- 3.39 3.39 ---- 2.37 2.37 Is being w ork

1 IN 22.5

RVII 50.69 "G4" 4.69 125.50 19.65 6.75 26.40 11.25 6.75 18.00 Is being

w ork

1 IN 15

22.40

85%

RVIIA 28.34 "G4" 2.76 156.68 15.29 3.62 18.91 10.38 3.62 14.00 Partly

developed

16.28 and w ater

logged 1 IN 20

85%

RVI 60.57 Not

know n 6.23 220.01 30.58 ---- 30.58 21.40 ---- 21.40 Virgin

RV 20.00 Do 4.20 246.85 20.61 ---- 20.61 14.42 ---- 14.42 Virgin

RIV 65.40 Do 8.35 316.45 41.00 ---- 41.00 28.70 ---- 28.70 Virgin


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8.1. DEVELOPMENT BY CM

District Name : 41st west level in bankola seam

Mode of Entry : Shaft

Method of Mining : Bord & Pillar

Method of Working : Development by continuous miner.

Average TDP : 1600Te

Method of Support : Roof Bolting

No of Haulage : 02

Face Machinery : CM, Shuttle Car, Quad Bolter, Feeder Breaker, Belt Conveyor.

Name of seam : RVII

Thickness : 4.69mts

Gradient : 1 in 15

Gassiness : Degree II

Grade : G4

Roof : Shale and intercalation of mud & sand stone

Floor : Shale and sand stone

Geological Reserve : Mineable about 26.4MTe

Mineable Reserve : about 17.47MTe

Depth of Shaft : 129.91mts

Diameter of shaft : 5.1mts

Incubation period : 6 month

RMR : 49.5


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The standard layout consists of a five road development, with the main conveyor and feeder breaker

positioned in the central roadway. This provides working areas to carry out all the main development

functions:

One heading for the CM to be cutting

One heading ready for cutting

One heading for ventilation rearrangement and survey work

One heading for cleaning by LHD

One heading for supporting by Quad Bolter


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8.1.1. CM SECTION DETAILS:

8.1.1.1. CONTINUOUS MINER:

Continuous Miner is the machinery which cut Coal, gather and load on

transporting machinery eliminating drilling blasting operation.

Actually Continuous Miner is a package of machinery including- a) Coal Cutting Machine :- Continuous Miner b) Coal Hauling Machine :- Shuttle Car

c) Coal Lump Breaking & Feeding d) Machine to Conveyors :- Feeder Breaker

e) Face Supporting Machine :- Bolter Quad Bolter Twin Bolter

f) Face & Road Cleaning Machine :- LHD g) Power Distribution :- Load Centre


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8.1.1.1.1. SPECIFICATION OF JOYCM 15 COAL CUTTING MACHINE

Joy 12CM15 is a high capacity, totally remote controlled CM designed for medium to high coal seam applications.

No. of CM used in ShyamSundar pur : 01 Maker : JOY Mining and Machinery Ltd. Model : 10 DVG Serial Number : CM 6149 loading rate : 17-30 tone/min

The machine has :

Peaks - 66

Cutter head drum Diameter - 1.12m

Cutting Width - 3.3m

Max cutting height - 4.6m

Conveyor width - 0.76m with 2.41m/s speed

CM is equipped with 2 cutter heads, with standard clutch protected, AC induction Motors (170kw) mounted parallel to centreline of boom frame.

Each cutter motor connects to the gearing of gear case using an internal torque shafts.

2 gathering head motors (AC) of 40kw

2 traction motors (DC) of 26kw

1 pump motor of 52kw;

1 dust collector fan motor 19kw.

Total Weight of CM = 58 tonns(58376kg)

This technology was first introduced in USA in the decade nineteen forties. Gradually in SA, Australia, Chaina etc Continuous Miner technology has been adopted.

In the year 2002 the Continuous Miner technology was adopted in ‘Anjal Hill’ mines of Chirimiri in India & Tandsi of WCL.

ECL – Jhanjra / Shyamsundarpur Colliery SECL – Chirimiri – NCPHI, Sheetal Dhara

WCL – Tandsi SCCL – VKT, GDKII (DBT)


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As Continuous Miner is large underground machinery, so lowering the package of CM machinery can only be done through incline of proper cross section & gradient – not

through any shaft / pit.

The coal seam with following characteristics can be worked by Continuous Miner Thickness : - 1.5mts. to 4.5 mts. Gradient : - Flat to 1 in 10 ( 6° )

Floor : - Soft shale to hard competent.

Production capacity of Continuous Miner depends upto mining characteristics, evacuation system etc. It can produced more than 5,00,000 tonnes per annum.

Presently at Shyamsundarpur Colliery,

Gradient : - Flat to 1 in 10 ( 6° ) Floor : - Soft shale to hard competent.

Production capacity of Continuous Miner depends upto mining characteristics, evacuation system etc. It can produced more than 5,00,000 tonnes per annum.

8.1.1.2. SHUTTLE CAR:

There are 2 shuttle car used in Shyamsundar pur Colliery. They are-

Maker : Joy Mining & Machinery Model : 1. 10SC35BC

2. 10SC36BC


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8.1.1.2.1. INTRODUCTION The Joy Shuttle car is a large heavy duty unit, designed to carry maximum payload at high

speed.

It collects the coal from continuous miner working at the face and supplies to Feeder breaker

or mine cars or belt conveyors.

8.1.1.2.2. DESIGN The car has four wheel positive drives and four wheel hydraulic operated steering, which

provides maximum traction potential with a minimum turning radius.

It contains hydraulic pumps, driven by a separate electrical motor to power the cable reel,

steering and conveyor elevating functions.

At discharge end a chain and flight conveyor is fitted which can be elevated by hydraulic cylinders.

8.1.1.2.3. MAIN COMPONENTS OF SHUTTLE CAR

Wheel - It has 4 wheel

Motor - Wheels has 2(two) 85kw DC traction motor. Tram speed - The maximum vehicle tram speed is

6mph (9.6 km/hr)

Rated Load Capacity - 8 tone Maximum weight - 18,000 kg

Ground pressure at max. rated load - 8.5 kg/cm2

Tires - 35*15-15

Length - 8.3m Width - with 1.42 m conveyor, 3.2m

Chassis height - .9m Load end height - .8m

Ground Clearance - 212mm

Motor - conveyor 50Hz- 1-16 kw

Pump 50Hz- 1-16 kw

Traction 50Hz- 2-50


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8.1.1.3. FEEDER BREAKER: Maker : JOY Mining & Machinery Ltd.

Model No : D1MB3-7C Serial No : 14185

Quantity : 01

8.1.1.3.1. INTRODUCTION The belt feeder breaker is a single piece machine which is installed before the belt conveyor

to receive the material and size it before being carried to another location for operation.

The Stamler Belt Feeder is a mobile conveyor system, which incorporates a pick up breaker

to reduce the size of the material being conveyed through the machine.

8.1.1.3.2. DESIGN The design of the feeder breaker is such that the material is placed onto the conveyor at the

intake end of the machine, which has been built with a hopper that is adequately sized to

receive the incoming material.

The pick breaker breaks the material by striking the material with sharp pointed picks. Once

the material is reduced to the required size, the material is moved through the machine and is discharged on to a belt conveyor at the discharge end.


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8.1.1.3.3. SPECIFICATION

Overall width (at intake end) -108-142 inch Conveyor width - 44, 50 & 56 inch

Overall length - 396-460 inch Weight - 34000-40823 kg

Seam height - 32-72 inch Processed Material -Run of mine coal with high percentage of rockcontent Breaker Diameter - 15-21 inch

Breaker Pick Force - Upto 110, 000lbs Ground Clearance(Intake End) - 0-8inch

(Discharge End)- 6-21 inch Frame Height - 28-37 inch Total Horse Power - Upto 250 hp

Intake End Design - Ram car 3-way dump

Hopper w/side boards

8.1.1.4. QUAD BOLTER:

There maker of Quad Bolter used in Shyamsundar pur Colliery is JOY Mining & Machinery Ltd.

Number of Quantity is 1(One). Model 4XHFX280 Rotary Wet with 4 controls.


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8.1.1.4.1. INTRODUCTION

The Quad Bolter is a machine which capable of installing bolts into the roof and in walls.

Drilling is accomplished by JOY Patented Hydraulic roof bolter.

Direct mast mounted hydraulic controls.

Distance between two bolt in roof is in junction is 0.8m-1.2m, in walls-1.5m.

8.1.1.4.2. GENERAL SPECIFICATION

Number of roof bolts : 4

Number of rib drills : Roof drills rollover to bolt rib

Machine Weight : Approx 29,800 kg

Machine length : 8008mm

Machine width : 3160mm retracted, 5680mm with platforms extended

Operating width : Upto 6000mm

Operating range : 2400mm to 5000mm

Roof Bolt : Hole Diameter- 32mm

Bolt length- 1.95m Bolt Diameter- 30.4mm Bolt thread length- 0.15m

Minimum tramming height : 2060mm

Ground clearance : 360mm

Traction speed : 0-20 m/min hydraulic drive, proportional control.

Hydraulic Tank : 450 litres main tank + 350 liters in chasis.

Motor : Hydraulic pump motor 1*125kw air-cooled 50Hz.

Pump : Fixed gear pump, 4 sections, each section 97 liters/min

Voltage : 1140 v, 1050v or 950v


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8.1.1.5. LOAD CENTRE

It is also known as distribution board or panel board.

It is a component which divides an electrical supply or an electrical power feed into subsidiary circuits, while providing a protective fuse or circuit breaker for each circuit, in a common enclosure.

Normally it has a main switch, a recent board, one or more residual current devices or

residual circuit breaker with over current.

Manufacturer : B & F Mine Matic

Total Mine Distribution (TDM)

Power Supply : 2000A DC

Input : 3.3kv

Output : 1.1kv in each branch

Electricity providing to Feeder Breaker, Quad Bolter, Continuous Miner, Shuttle Cars.

It has a door-mounted keypad and graphics display provided for user interface. Control

functions and all process variables are under-configurable.


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8.2. DEVELOPMENT BY LHD District Name : 25th west level in bankola seam


Method of Mining : Bord & Pillar.

Type of Explosive used : P5 (SUPER COAL)

Detonator : Delay Detonator

Method of Working : Development by LHD (LOAD HAUL DUMP).

Average TDP : 450Te


No of Haulage : 01

Face Machinery : Drill, LHD, UDM, Belt Conveyor.

Type of cut : Wedge, Pyramid.

Name of seam : RVII

Thickness : 4.69mts

Gradient : 1 in 15


Grade : G4

Roof : Shale and intercalation

of mud & sand stone







RMR : 49.5


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8.2.1. LOAD HAUL DUMP(LHD)

LHD is a tyre mounted loading machine which takes blasted coal from the face in its bucket,

transports it over a distance and dumps it on the district chain or belt conveyor.

Being tyre mounted, it runs faster than SDL (at speed upto 4km/hr) and the chain/belt

conveyor could be kept as far away as 90m from the face.

Power to the machine is fed by a trailing cable mounted on cable reel of the machine.

Being tyre mounted, LHD cannot work where gradient is more than 1 in 6 or floor is weak

and water seeps from the floor or drips from the roof.

The bucket, which is fitted in front of the machine. Is front discharge type. In tilting type

bucket, rear portion of the bucket is raised to tilt the bucket and unload coal. In pusher plate

type. The bucket has a pusher plate for pushing and unloading coal in the front. All

movements of bucket are by hydraulic pushers.

LHD is made in two parts which are joined by a flexible joint and can rotate upto 1000,

enabling it to take a turn at a narrow gallery junction also.

Depending on the model, bucket has capacity 1.5m3.

The machine can work in seam heights upto 2.4m. A 1.5m3 LHD is powered by 50h.p/550v

FLP motor.

For smooth working, galleries have to be maintained clear of fallen coal.


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8.3. DEPILLARING BY STOWING

District Name : PANEL S5 OF JAMBAD BOTTOM (R-VIII B1)


Method of Mining : Bord & Pillar.

Type of Explosive used : P3 (SUPER COAL)

Detonator : Delay Detonator

Method of Working : Depillaring by Stowing

Average TDP : 200Te


No of Haulage : 01

Face Machinery : Drill, SDL, UDM.


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Type of cut : Wedge, Pyramid.

Name of seam : RVIII B1

Thickness : 4.65mts

Gradient : 1 in 22.5


Grade : G4

Roof : Shale and intercalation

of mud & sand stone







Stowing material : Sand and water (Ratio 3:1)

RMR : 38


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8.3.1. SDL (SIDE DISCHARGE LOADER)

No. of SDL used in Shyamsundarpur Colliery is 2(Two).

Maker of SDL is EIMCO ELECON LTD.

It is a popular coal loading machine of u.g. mines which can unload coal to the right or left of

the machine.

SDL takes blasted coal from the face with the bucket at front of the machine, transports and

dumps coal onto chain conveyor, belt conveyors (called pony conveyors) installed near the

faces are used in preference to chain/belt conveyors, tubs and mine cars for higher production

and productivity.

Being crawler mounted, SDL can work in gradients upto 1 in 4.

SDL is provided with dual chain conveyor type side discharge bucket for easier unloading,

lesser spillage and convenience of working in thinner seams. Height of the machine over

canopy is 2.1m.

The machine is powered by FLP electric motor and all movements of bucket are done

hydraulically for which hydraulic pack is mounted on machine itself.

Bucket capacity of SDL is 1m3.

Motor capacity is 65hp/550v

One SDL on average, loads about 100TDP, but, is capable of much more with availability of

adequate blasted coal and evacuation capacity, and efficient maintenance.


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8.3.2. UDM (UNIVERSAL DRILLING MACHINE)

It is a crawler mounted electro-hydraulic machine which can drill blast-holes in the face, and

also holes for roof/side/floor bolting at various angles. Hence, it has been named UDM.

The machine is provided with a 22kw FLP motor, a strong canopy and is so designed that it

can move in narrow galleries and can take sharp turns.

Movement of drill boom and face by hydraulic pushers. The operator is required only to

control a few levers to do fast drilling. He is saved from falling dust. The machine can drill

holes from 38 to 63mm diameter and 3 to 5m deep. By adding more drill rods, holes upto

20m long can be drilled. Hence, it is found very useful in Blasting Gallery Panels also.

Since hand held drill cannot drill long holes, blasting progress per round is limited to 0.9m.

UDM permits drilling of longer holes easily and hence, better progress per blast is possible.

Due to speedy drilling, production and productivity of loading machines (SDL, LHD) also

increase considerably.

UDM can work in gradients upto 1 in 4 and in seam heights upto 3.5m. The machine is 1.6m

high, 4.6m long and 1m wide with a travelling speed upto 3kmph.


32 Signature………………………..

PRODUCTION

(During Training Time Jul-13 to Oct-13)

YEAR WISE PRODUCTION

50000

51000

52000

53000

54000

55000

56000

Jul-13 Aug-13 Sep-13 Oct-13

Ton

e

Jul-13 Aug-13 Sep-13 Oct-13

Production(Tone) 51966 54029 55315 55015

Production(Ton)

264193282248

642026

703064

640107

0

100000

200000

300000

400000

500000

600000

700000

800000

2009 2010 2011 2012 2013(upto Oct-13)

Production(Tone)


33 Signature………………………..

WINDINING ENGINE

Makers Name : JESSOP

Pulley Diameter : 9’4”

Guide Rope Diameter : 11/4

Type : Steam

Winding Rope Diameter : 25mm

Life of Rope : 1 year 6 months

Capacity of Suspension Gear : 5Tons

Drum Diameter : 108”


34 Signature………………………..

SUPPORT

Supports in mine are two types:-

1. Permanent Supports

2. Temporary Supports

1. Permanent Supports:-

Permanent Supports are those supports which are used in mine for permanent purpose.

Example: - Coal Pillar, Rock Bolt.

A. Coal Pillar :-

Coal Pillars are made of Coal and size is 30m*30m

B. Rock Bolt :-

After each round of blasting the sides and roof shall be thoroughly dressed.

As soon as the faces advances, the roof shall be permanently supported by

torque, steel, suitable rock, bolts having 20mm diameter and 1.5m long and at

one end 90mm length threaded, suitable to fit 18mm size nut for tightening of

bearing plate.

The rock bolt shall be grouted for its full length at an interval of 1.2m. In

strike as well as dip-rise direction in grid pattern.


35 Signature………………………..

A bearing plate not less than 10cm by 10cm and 5mm thick shall be used for

fastening of rock bolts.

The rock bolts shall be installed in a 32mm diameter holes. Good quality

cement capsules having diameter 25mm shall be used for grouting the bolts.

At least 2 tonnes and 6 tonnes of load in 8 hour shall be obtained / recorded

after installation of each bolts

The maximum distance between the last row of rock bolts and moving face

shall not be more than 1.5m at any point of time.

As far as possible, the rock bolts shall be installed normal to bedded plane.

No person other than those required for dressing or support shall work at any

place which is not supported in accordance with systematic support rule.

2. Temporary Support:-

Temporary Supports are those supports which are used in mine for temporary purpose.

Example: Cogs, Props.


36 Signature………………………..

LIST OF SAFETY EQUIPMENT IN SSPUR COLIERY

1. Flame Safety Lamp :- 06 2. M.S.A. Methanometer :- 06

3. Toxi-Meter :- 01 4. Oxy-Meter :- Nil 5. Explosive Meter :- Nil

6. CO-Detector :- 01

7. Anemo-Meter :- 02

8. Hygro-Meter :- 02

DUAL HEIGHT, WATER DIVERTING ROCK BOLTING TELLTALE

INTRODUCTION Ground control monitoring instrumentation fulfils two key requirements for safe underground

mining. It provides personnel with information on the stability of the roof and sides. It can provide the detailed data on rock and support loads and deformations required

to optimize support design.

This visual telltale gives immediate information on movement within and above the rockbolted height.


37 Signature………………………..

READING METHODS OF TELLTALE

BY COLOR

Report whole and part bands visible. For example:

“A”: GREEEN “B”: YELLOW Report daily, unless instructed otherwise.

INTERPRETATION

1. Movement of “A” relative to its reference (bottom plastic tube) represents the strata expansion WITHIN the bolted height.

2. Movement of “B” relative to its reference (bottom of “A” ) represents the strata expansion ABOVE the bolted height (assuming no movement above top anchor)

3. The total strata expansion is “A” plus “B”.

4. Expansion of strata above the top anchor detected.

ACTION

The appropriate action levels for the district and the remedial actions to be taken, when these levels are exceeded, will have been set by the Colliery Manager. However if the telltale indicates

either “A” or “B” has changed from one color-band to another or if the rate of movement increases, management should be consulted immediately for the required action.

VENTILATION

All the seams have inter-connected ventilation and it’s reported that ventilation is inadequate

in both section of RVII. Since Pit No I of Sarpi Unit has been widening and deepening has been done up to RVIIA dip side development of RVII should be speeded up and connected with the

shaft at least RVII ventilation can be independent.

VENTILATION AND ENVIRONMENT MONITORING SYSTEM

Unit Fan Location HP of Motor

Capacity m³/min

Type of Fan

Water Gauge

ESP Unit

Axial Flow Voltas make

No.3 Pit 200 KW 8000 PV 300 50 mm

Stand by Axial

Flow No.3 Pit 110 KW 5000 PV 200 22 mm

Sarpi Unit

Axial Flow No.2 Pit 110 KW 5000 PV 200 22 mm


38 Signature………………………..

FIRE AND EXPLOSION

a) There is no history of explosion in this mine. The mine is degree II gassiness.

b) Crossing point and ignition point temperature of Jambad top seam are 111O0 C and 175O0 C respectively.

c) The following is a history of fire at the mine.

Unit Name of Panels Cause Date Method of

dealing

Sorpi Upper Kajora Seam Spontaneous heating 1992 Sealed off

Panel no. 25 as Jambad bottom

Spontaneous heating 15.08.03 Sealed off

ESP Panel No. 25 as Jambad

seam

Spontaneous heating Feb 2004 Sealed off

Panel No. 47C as Jambad seam


Panel No. 51 as Jambad

seam


INUNDATION

There are extensive subsided areas in Sarpi Kajora Unit. Accumulation of water over the

subsided areas should be prevented by filling up the depressions and by providing garland drains.

Development of working in Bankola Seam (RVII) is being done over the water logged

workings of Bonbahal seam. The parting between the seams was 24 mts.

Drain out water through weep holes shall be drained from boundary winzes or sill pillar drive

and collected in the large capacity sump through drain. This discharged water shall be

pumped by 50HP capacity centrifugal pump/ 30 HP submersible pump to surface water tank

located at CH.9500.


39 Signature………………………..

INNOVATION

Usage of Steel Frames in Stone Dust Barrier

The usage of steel frames replacing the wooden frames in the construction of stone dust

barrier is an innovative step undertaken in this mine.

Introduction of Miner’s Station

An innovative step has been taken in terms of comfort of miners by establishing a miner’s

station equipped with adequate facilities.

PEOPLE AT MINER’S STATION


40 Signature………………………..

STORAGE OF TOOLS AT THE BACK OF MINER’S STATION


41 Signature………………………..

Thank

you

Colliery Training Report(SARPI PROJECT, ECL)

Engineering

Transcript of Colliery Training Report(SARPI PROJECT, ECL)