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Instruments for Dam Safety Monitoring

Instruments For Dam Safety Monitoring

PORE WATER PRESSURE & WATER LEVEL

VW PiezometersStandpipe PiezometerWater Level Meter

SOIL PRESSURE

VW Total Pressure Cells

INCLINATION & TILT

Portable Inclinometer In-Place InclinometerAXMi 3D InclinometerQJ Inclinometer CasingXC Inclinometer CasingPendulumsTilt MetersTilt Beams

CRACK & JOINT MONITORING

3D Mechanical Crack Meter VW Crack Meter 3D VW Crack Meter VW Joint Meter VW Soil Extensometer

The importance of monitoring for dam safety is widely accepted. Monitoring provides the information that is needed to develop a better understanding of the on-going performance of the dam during the construction, impounding and operation phases. Therefore, good dam safety monitoring should be a key part of every dam owner’s risk management.

Instrumentation can be used to implement a monitoring system that provides more comprehensive and real time information regarding the on-going performance of the dam.

Geosense instruments have been installed on many dams worldwide as part of dam safety monitoring programmes.

Dam Safety Monitoring

Instruments For Dam Safety Monitoring

STRAIN MONITORING

VW Strain Gauges Rosettes Zero Strain Container

SETTLEMENT

VW Liquid Level Settlement SystemGEO-XM Magnetic Settlement SystemAXM In-Place Magnetic ExtensometerReed Switch Probe

SEEPAGE

V-notch WeirsVW Weir MonitorStaff GaugesUltrasonic Flow Meter

DATA ACQUISITION

GeoLogger G8 PlusRemote Smart MuxSmart Mux InterfaceVW Readout VWR01Telependulum TP-2000

STRONG MOTION MONITORING

Accelerometers & Recorders

SOFTWARE

GeoAxiom Vista

METEOROLOGY

Weather Station


Baish Dam, Saudi Arabia

The Baish Dam is a gravity dam onWadi Baish about 35km northeast ofBaish in the Jizan Region of south-western Saudi Arabia.

The dam has many purposes includingflood control, irrigation and groundwaterrecharge. The total reservoir capacity ofthe dam is 192 million m3.

The dam was constructed between2003 and 2009 and at 106m high oncompletion, it was the tallest dam inSaudi Arabia. It is owned and operatedby the Ministry of Water and Electricity.

Baish dam is one of six dams currently undergoing the change from a manualto a fully-automated monitoring system.

The original instrumentation equipmentwas installed during construction andwas entirely manually-read. The Ministrymade the decision to upgrade theinstrumentation to a modern automaticsystem including full data logging of allinstruments together with alarm triggerlevels and data access via the Internet.

After consultation with MinistryEngineers, Geosense designed asystem installing new instruments sideby side with the existing instrumentationand upgrading several areas to providea fully-integrated and automatic damsafety monitoring system.

All the new instruments were connectedinto a data logging system and providereal-time visualisation within the damcontrol room.

The dam integrity is carried out bymonitoring key areas as follows:

Main dam bodyInclination

Galleries Expansion jointsSeepage Upstream pore water pressures Downstream pore water pressures

Dam main drain Seepage

Dam reservoirWater level

Dam abutments Settlement Seismic monitoring

Overview Monitor ing

Project Deta i ls

NAME: Baish Dam

YEAR: 2016

CLIENT: Ministry of Water and Electricity

MAIN CONTRACTOR: N/A

INSTRUMENTATION: Triad Technical Services

CONSULTANT: Geosense

Project Summary

Products used

~ VW piezometersMeasurement of pore water pressure.

~ AXMi 3D Inclinometers Combined Magnetic Extensometer &In-Place Inclinometer for bothsettlement and inclination profiles.

~ Pendulums & TelependulumsMeasures inclination and horizontaldisplacement. Automatic readings byTP-2000 Telependulum readout unit.

~ VW triaxial crack gaugesMeasures expansion or contraction inthe dam joints.

~ V-notch weir & monitorMeasurement of seepage flows.

~ Remote MultiplexersAllows multiple sensor cables to beconnected into one central location forconnection to a data logger via onemulti-core cable.

~ GeoLogger GL1000Multi-channel data logger for remotereading and logging all instruments.

~ Accelerometers & RecordersMeasures seismic activity for earlydamage detection.

~ GeoAxiom VistaData visualisation software. All data isfully accessible via the internet.


Kashimbila Dam, Nigeria

Construction of a new multi-purpose 40Megawatt dam in Taraba State, Nigeriawill generate much needed electricity forthe country and provide jobopportunities, social and economicbenefits to people in the area.

The preliminary design was for a damwith a storage capacity of 200 million m3

but this was subsequently increased to500 million m3.

The main challenges were related to thelack of data in the hydrological andgeological studies as well as the projectlocation in the extreme south-easternpart on Nigeria, which required longtravel times on very poor roads.

The hydropower station was initiallydesigned with an installed capacity of18 MW, however, following detailedhydrological modelling and yieldanalysis carried out by Aurecon, a 40MW installed capacity wasimplemented. Aurecon’s input on thisproject led to a more economical designof the dam and an increased installedcapacity for the hydropower station.

The dam is expected to be ready forcommissioning in December 2014.


Project Deta i ls

NAME: Kashimbila Dam

YEAR: 2014

CLIENT: Federal Republic of Nigeria/Natra

MAIN CONTRACTOR: SCC Nigeria

CONSULTANT: Aurecon

Project Summary

Products used

Liquid Level Settlement plates wereinstalled at various levels within theembankment dam as the fill materialwas added. Together with VWPiezometers to monitor the porepressure, these would provide a goodpicture of what was happening withinthe dam fill material during construction.

Geosense Technicians have recentlyreturned from on-site assistance andtraining provided to the local site teamfor the Settlement Cells and VWPiezometers.


~ VW Liquid Level SettlementPlatesUsed to monitor settlement or heavein soils and other structures such asembankments, earth and rockfilldams.

~ VW Rotary Switch TerminalBoxesFor the connection and reading ofup to 34 instruments.

~ VW2106 ReadoutPortable readout for use with anyvibrating wire sensor.



Shahdag Tourism Complex, Azerbaijan

Shahdag Tourism Complex is located inthe north eastern of the Caucasus nearto city of Gusar which is 180km awayfrom Baku in Azerbaijan. When it iscompleted, the complex will provide anumber of activities for the visitors bothin summer and winter period.

The Tourism Complex will be locatedwithin the Shahdag National Park, whichis known for having an intact ecologicalsystem and an untouched flora andfauna.


Project Deta i ls

NAME: Shahdag Winter Summer Tourism Complex

YEAR: August 2013 – Ongoing

CLIENT: Ministry of Culture and Tourism of Azerbaijan Republic

MAIN CONTRACTOR: DiA Holding FZCO

CONSULTANT: Enargeo

Project Summary

Products used

The most critical section of the tourismcomplex is the 24m high earth damwhich is an artificial reservoir with a15900m3 capacity which will be used forwater storage during the lifetime of theproject to provide a continuous watersupply for snow production. Therefore amonitoring system is required for bothconstruction control and the long-termperformance and overall stability of thereservoir.

The vertical settlement and lateraldisplacement in the reservoir body willbe monitored by a number of boreholelocations which include vertical orhorizontal inclinometer systems and anumber of vertical inclinometer systemscombined with a magnetic extensometersystem allowing the acquisition of datafor both horizontal and verticaldisplacement from a single borehole.

~ QJ Inclinometer casingFor use with portable inclinometers.

~ Portable MEMS inclinometer Includes both vertical and horizontal probe for measuring lateral and vertical displacements.

~ Inclinalysis Software For analysing the data from verticaland horizontal boreholes.

~ Data loggersMulti-channel remote reading& logging.

~ GXM300i Magnetic settlement & inclinometercasing system for measuring groundsettlement and lateral displacement.

~ Reed switch probeFor use with GXM300i system.

Zeizoun Dam, Syria

The Zeizoun dam is situated on theOrontes river north of Hama in Syriaand was originally constructed in 1996with a capacity of 71 million³ and usedfor widespread irrigation in the Al-Ghabprovince .

On 4th June 2002 a failure occurred inthe original dam which was completelydestroyed and resulted in widespreadflooding and damage.

As part of the re-building program a newdesign with an extensive monitoringsystem is currently being implemented.

The new dam designb includes a muchdeeper foundation which is intended toremove the weak strata identified aspart of the reason for the failure.

A grouting and monitoring gallery isincluded in the new design, which islocated beneath the core foundation.


Project Deta i ls

NAME: Zeizoun Dam

YEAR: 2010-0n-going

CLIENT: Directorate of Water Resources Hama Governorate

MAIN CONTRACTOR: General Company for Hydro Projects

INSTRUMENTATION: Al Mutawasset

CONSULTANT: Agrocomplect SA, Bulgaria

Project Summary

~ VW PiezometersFor accurate measurement of pore water pressure and water level.

~ V-notch weirsAccurate measurement of seepage.

~ VW Weir MonitorUsed with V-notch weirs.

~ Staff gaugesMeasuring water level in dam reservoir.

~ Ultrasonic Flow Meter Measurement of flow in open channels.

~ GEO-XM magnetic systemFor measuring ground settlement.

~ Reed switch probeFor use with the GEO-XM system

~ Inclinometer casingFor use with portable inclinometers.

~ Portable MEMS InclinometerFor measuring lateral displacement.

~ VW Total Pressure CellsFor measuring total earth pressures

~ VW Soil ExtensometersFor measuring lateral & longitudinaldeformation.

~ Data loggers Multi-channel remote reading and logging of all instruments.

~ GeoViewerData visualisation software.

Products used


Main Dam BodyPore water and total soil pressures,settlement and lateral movement withinthe core. Seismic response of the crest

New Dam FoundationWater levels under the downstreamshoulderGroundwater levels beyond the dam toe

Exisiting Dam BodyPore water pressures within the core

Reservoir Level Water level, pressure and loading

Dam AbutmentsGroundwater levels

New/Existing Dam ConnectionJoint movements

GallerySeepageJoint movements New/Existing Dam BodySurface movementsDownstream Open ChannelsWater level and flow


Tishreen Dam, Syria

Completed in 1991 and situated withinthe Tigris-Euphrates basin, the 630MWhydro-electric Tishreen Dam has astorage capacity of 1.9 km3 andgenerates 1.6 billion kWh of electricityevery year.

The dam is constructed with a chalkimpervious core and seepage beneath itcontrolled by a Bentonite/cement cut-offwall. The complex comprises the maindam, a powerhouse constructed as agravity dam and a small fuse plug.

The original instrumentation equipmentwas installed during construction andwas entirely manually read.

Due to a serious dam failure in Syria theGeneral Organisation for EuphratesDam (GOED) decided to upgrade theinstrumentation to a modern automaticsystem including full data logging of allinstruments together with alarm triggerlevels.

After consultation with the GOEDEngineers, Geosense designed a newsystem installing new instruments sideby side with the existing instrumentationand upgrading several areas to providea fully integrated and automatic damsafety monitoring system.

All the new instruments were connectedinto a data logging system and providedreal time visualisation within the damcontrol room.


Main dam bodyPore water pressures

Dam main drainSeepage

Dam abutmentsGroundwater levels

Power houseExpansion joints Relief well seepageUpstream pore water pressuresDownstream pore water pressuresTemperature

Bridge deckExpansion jointsTemperature

GalleriesSeepage Upstream pore water pressuresDownstream pore water pressures


Project Deta i ls

NAME: Tishreen Dam Automatic Instrumentation

YEAR: 2006

CLIENT: General Organisation Of The Euphrates Dam

MAIN CONTRACTOR: N/A

INSTRUMENTATION: Geosense

CONSULTANT: Geosense

Project Summary

Products used

~ VW piezometersMeasurement of pore waterpressure.

~ Borehole packers Produce a response zone in aborehole in combination with apiezometer.

~ VW triaxial crack gaugesMeasures expansion orcontraction in the dam joints.

~ V-notch weirsMeasurement of seepage flows.

~ Terminal switch boxes For the connection and readingof up to 34 Instruments.

~ Data loggersMulti-channel remote readingand logging with solar panel andback-up battery.

~ Telemetry systemRadio based system to connectthe main processing computerwith the remote data loggers.

~ GeoViewerData visualisation softwarewhich retrieves data from thedata logger in near real time andprocesses the information ineither map, profile or graphformats. Trigger levels & alarmscan also be set.


Chemususu Dam, Kenya

Chemususu Dam, completed in 2014, isnow the third largest dam in Kenya. It islocated on the Chemususu River, atributary of the Tigiri River, some 80kmsNorth-West of Nakuru Town andapproximately 15kms West of Eldama-Ravine Town. This a high altitude sitewhere the crest elevation is 2340mabove sea level.

The dam will improve water storage bystoring approximately 10.94million m3

and provides an uninterrupted watersupply of about 35,000 M3/day toNakuru Town, parts of Baringo andKoibatek Districts, including Eldama-Ravine Town.

The project included a Rockfill damapproximately 40m high with a crestlength of approximately 350m. It has anarrow inclined clay core only,measuring only 20m at its base.

In addition there is a large concretespillway and an intake/culvert for bothwater supply and river flowmaintenance.


Project Deta i ls

NAME: Chemususu Dam

YEAR: 2011-2014

CLIENT: National Water Conservation & Pipeline Corp

MAIN CONTRACTOR: FRABO Construction Ltd, NBO

INSTRUMENTATION: Vas Motor Mart

CONSULTANT: Otieno Odongo & Partners

Project Summary

Products used

Monitoring of the dam constructionintegrity and long term safety wascarried out by recording measurementsin the following key areas:

Main dam foundationPore water pressures upstream of thegrout curtain.Pore water pressures downstream ofthe grout curtain.

Dam coreContact zone pore water pressuresclose to the culvert and the corefoundation.Contact zone soil pressures betweencore and the culvert.Pore water pressures within the damcore.Horizontal & vertical loading within thecore.Vertical settlement of the core.Horizontal movement of the core.


Spillway Wing WallsEarth and pore water pressures in thecore / wing wall contact zone

Surface MovementsSettlement and displacement of thecrest and rockfill

Reservoir LevelWater level and loading



~ VW weir monitorUsed with V-notch weirs.

~ GXM300iMagnetic settlement & inclinometercasing system for measuring groundsettlement and lateral displacement.

~ Reed switch probeFor use with GXM system.

~ Inclinometer casingFor use with portable inclinometers.

~ Portable MEMS inclinometer For measuring lateral displacement.

~ VW rigid-back total pressurecellsFor measuring total earth pressures.

~ Data loggersMulti-channel remote reading& logging.

~ GeoViewerData visualisation software whichretrieves data from the data loggerin near real time.

~ Reflective targetsSurvey targets for use with totalstation survey equipment to detectsurface movements.


Al Abyad Dam, Syria

The Al Abyad dam is currently beingconstructed on a tributary of the Orontesriver near to Jisr Al Shurghur, betweenAleppo and Latakia in Syria.

The dam will provide water storage,primarily for irrigation, in this agriculturalarea.

The project includes a conventional claycore dam supported by rockfillshoulders. Also included is a largespillway structure with plunge pool andwater intake tower with associateddischarge culvert.

The dam has a grouting, drainage andmonitoring gallery running the full lengthof the core foundation with access atboth abutments and the downstreamtoe.

Built on a severely faulted rockfoundation, this structure has beenhighlighted for geotechnical monitoring.


Project Deta i ls

NAME: Al Abyad Dam

YEAR: 2010 - ongoing

CLIENT: Directorate of Water Resrouces Hama Governora

MAIN CONTRACTOR: General Company for Hydro Projects (GCHP)

INSTRUMENTATION: Al Mutawasset

CONSULTANT: Agrocomplect SA

Project Summary

Products used

Monitoring of the dam constructionintegrity and long term safety is carriedout by recording measurements in thefollowing key areas:

Main dam bodyPore water pressures in the coreSettlement in the core

Dam gallerySeepagePressure reliefFoundation pore pressures


Intake towerReservoir water level


~ Standpipe piezometersSimple measurement ofgroundwater levels.


~ V-notch weir monitorUsed in combination withV-notch weirs.

~ Staff gaugesFor measuring water level indam reservoir.

~ GEO-XMMagentic system for measuringground settlement.

~ Reed switch probeFor use with GEO-XM system.

~ Data loggersMulti-channel remote readingand logging with solar panel andback-up battery.

~ GeoViewerData visualisation softwarewhich retrieves data from thedata logger in near real time andprocesses the information ineither map, profile or graphformats. Trigger levels & alarmscan also be set.


Balarud Dam, Iran

Balarud dam is located in KhozestanProvince, 27km north of Andimeshk. It isan earthfill dam with a central clay core,1070m in length and 77.5m high. Itprovides water for irrigation, potablewater, industry and hydro power. Itimpounds a 131,000,000 m³ reservoirand its plant capacity is 4Mw.

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Overview

Project Deta i ls

NAME: Balarud Dam, Iran

YEAR: 2015 - on going

CLIENT: Khuzestan Water & Power Authority

MAIN CONTRACTOR: OMRAN MARON

INSTRUMENTATION: LARZEH SAKHT SAVALAN

CONSULTANT: DEZAB

Project Summary

Monitor ing Products used

Monitoring of the dam constructionintegrity and long-term safety is carriedout by recording measurements in thefollowing key areas:

Main dam bodyPore water pressures in the coreEffective sress in the coreInclination in the core & shellSettlement in the core &shellGroundwater levels

FoundationPore water pressures in the rockGroundwater levels



~ VW Total Pressure CellsFor measuring total earth pressures.

~ Standpipe piezometers

~ 3D Mechanical Crack Meter

~ Remote Smart Mux

~ Smart Mux Interface

~ Portable MEMS Inclinometer


~ Staff gaugesWater level in dam reservoir.


~ VW Readout VWR01Measures all types of vw instruments.

~ G8 PLUS Data Logger

~ Geoaxiom software

~ Weather Station


Karam Abad Dam, Iran

Karam Abad dam is located in WestAzerbaijan Province, 20km fromPoldasht. It is an earthfill dam with claycore, 1991m in length and 43m high.The dam provides Potable & Industry. Itimpounds a 53,700,000 m³ reservoir.

Karam Abad Dam was built to create areservoir dam to store the excess waterfrom the reservoir of Aras Dam at a rateof 5.30 cubic meters per second. Usingthe Ganbar Kundi pumping station in thevicinity of the reservoir of the Aras Dam,the result is the development ofagricultural land.

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Overview

Project Deta i ls

NAME: Karam Abad Dam, Iran


CLIENT: West Azerbaijan Regional Water Authority

MAIN CONTRACTOR: SAZ AB KIYAN PAD


CONSULTANT: ZISTAB

Project Summary



Main dam bodyPore water pressures in the coreEffective stress in the coreInclination in the core & shellSettlement in the core & shellGroundwater levels



~ HD VW piezometersMeasurement of pore water pressure.



~ Remote Smart Mux




~ Staff gaugesFor measuring water level in damreservoir.


~ VW Readout VWR01Measures all types of vw instruments.


~ Geoaxiom software

~ 3D Mechanical Crack Meter

~ Weather Station


PRODUCTS USEDVW piezometersMeasurement of pore water pressure

VW Total Pressure CellsFor measuring total earth pressures

Standpipe piezometers

3D Mechanical Crack Meter

Portable MEMS Inclinomter SystemFor measuring lateral displacement

Remote Smart Mux Smart Mux Interface

V-notch WeirsMeasurement of seepage flows

Staff gauges

GEO-XMMagentic system for measuring ground settlement.

VW Readout VWR1Measures all types of vw instruments.

G8 PLUS DataLogger

GeoAxiom software


Belobin Dam, Iran

PROJECT SUMMARY

Name: Belobin Dam, Iran

Year: 2017 - on going

Client: Zanjan Regional Water Authority

Main Contractor: Zangan Pershia

Instrumentation: Larzeh Sakht Savalan

Consultant: Arkan Rahab

OVERVIEWBelobin Dam is located south of Zanjan Province, 11 km from Halab city. It is an earthfill dam with clay core, 325m in length and 59m high. The dam provides potable and industry. It impounds a 53,780,000 m³ reservoir.

MONITORINGMonitoring of the dam construction integrity and long-term safety is carried out by recording measurements in the following key areas:

Main dam body• Pore water pressures in the core• Effective stress in the core• Inclination in the core & shell• Settlement in the core & shell• Groundwater levels

Foundation• Pore water pressures in the rock• Groundwater levels

Dam main drain• Seepage

Kalgan Chai Dam, Iran

Kalgan Dam is located south west ofBostan Abad on the Kalgan River (EastAzerbaijan Province) in Iran.

Commissioned in 2006, the damprovides water to the Potable &Industry. Kalgan Dam is an earthfilldam, with a clay core. It is 456m inlength and 65m high. The dam wasconstructed using 1.0 Mm³ of Materials.It impounds a 22,000,000 m³ reservoir.

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Overview

Project Deta i ls

NAME: Kalgan Chai Dam, Iran


CLIENT: East Azerbaijan Regional Water Authority


CONSULTANT: NAHAD AB

Project Summary






~ HD VW piezometersMeasurement of pore waterpressure.



~ Remote Smart Mux






~ VW Readout VW2106Measures all types of vw instruments.


~ Geoaxiom software


Bidvaz Dam, Iran

Bidvaz Esfarayen Dam is located in theNorth East of Khorasan ShomaliProvince, 20km from Esfarayen city. It isan earthfill dam with clay core, 104m inlength and 80m high. The dam providespotable & industry. It impounds a52,900,000 m³ reservoir.

A new cut-off wall is under constructionupstream of the dam.

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Overview

Project Deta i ls

NAME: Bidvaz Esfarayen Dam, Iran


CLIENT: North Khorasan Regional Water Authority

MAIN CONTRACTOR: GALA


CONSULTANT:TOOSAB

Project Summary








~ Standpipe piezometersSimple measurement of groundwaterlevels.

~ Remote Smart Mux






~ VW Readout VWR01Measures all types of vibrating wireinstruments.


~ Geoaxiom software


Golgohar Dam, Iran

Golgohar Dam is located 53Km South West of Sirjan in the Kerman Province in Iran.

Commissioned in 2011, Golgohar Dam is an earthfill dam, with a clay core. It is 795m in length and 25m high. The dam has seven sections needing instrumentation.

The dam was constructed for environmental protection in order to reserve tailing materials resulting from the iron mine concentration process.

Overview

Project Deta i ls

NAME: Golgohar Tailing Dam, Iran

YEAR: 2013-2015

CLIENT: Golgohar Mining & Industrial Co

MAIN CONTRACTOR: AB & KHAK


CONSULTANT: MEHR AB POYESH

Project Summary



Main dam bodyPore water pressures in the coreEffective Stress in the coreInclination in the core & shellSettlement in the core & shellGroundwater levels



~ VW HD PiezometersMeasurement of pore water pressure.

~ Standpipe PiezometersSimple measurement of groundwaterlevels.

~ Portable MEMS InclinomterSystemFor measuring lateral displacement.

~ Terminal Box


~ V-notch WeirMeasurement of seepage flows.




~ VW Readout VWR01Measures all VW instruments.

~ CR1000 Data Logger

~ Soil Extensometer


Sarcheshmeh Tailing Dam, Iran

Sarcheshmeh Tailing dam is located inthe Sarcheshmeh. The dam wasconstructed to reserve 1,000,000,000tons of tailing materials resulted coppermine concentration process. It is anearth fill dam with a clay core,1500 mlength and 75 m high, and reservoirvolume is 123,000,000 m³.

Overview

Project Deta i ls

NAME: Sarcheshmeh Tailing Storage Dam, Iran

YEAR: 2011

CLIENT: National Irainan Copper Industries Co.


CONSULTANT: ATC Co. & MEWE Co

Project Summary

~ V-notch weirProvides a method of measuringvolumetric. Since the geometry ofthe top of the weir is known and allwater flows over the weir, the depthof water behind the weir can beconverted to a rate of flow.

~ VW Weir MonitorAutomatically measures the heightof water behind the V-notch weir

Monitor ing

Automatic monitoring of seepage wasidentified as being a requirement toensure the long term integrity of thedam and allow water qualitymeasurements to be made.

Changes in seepage volumes and waterquality could be quickly identified andchecked with changes in reservoir leveland filling activities.

Products used


PRODUCTS USEDStand Pipe PiezometerMeasurement of pore water pressure

Inclinometer Casing For use with portable inclinometers

Dip Meter

Portable MEMS Inclinometer system For measuring lateral displacement

Reed switch probeFor use with the GEO-XM system

VW Readout VWR1 Measures all types of vibrating wire instruments

G8 PLUS Data logger

Remote Smart Mux 12 CH & 6CHA modular multiplexer that allows the management of multiple sensors as part of a remote or automatic data acquisition system.

Smart Mux Interface

PROJECT SUMMARY

PROJECT NAME: Shamil Dam

PROJECT DATE: 2017-2018

CLIENT: Hormozgan Regional Water Company

CONTRACTOR : Didas construction Company

CONSULTANT: Moshanir Consulting Engineers Co.

INSTRUMENTATION SPECIALIST: Larzeh Sakht Savalan

OVERVIEWShamil Reservoir Dam project is designed to prevent seasonal flooding and for the collection of water for agricultural purposes.

It is a clay core earth-fill dam with the height of 32.3m and crest length of 1200m. It has a surface water intake and deep discharge system, underground pumped storage type is situated upstream of the dam.

It is located 70km from Bandar Abbas.

Latest work includes the installation of Geosense sensors to automate exisiting sensors which were placed installed during dam construction.

MONITORINGMonitoring of the dam construction integrity and long-term safety is being carried out by recording measurements in the following key areas:

Main dam body• Water pressures in the core shell • Inclination in the core & shell• Settlement in the core & Shell• Groundwater levels

All existing VW sensors were double checked using the VWR1 readout unit.


Shamil Dam, Iran

PRODUCTS USEDStand Pipe PiezometerMeasurement of pore water pressure

Inclinometer Casing For use with portable inclinometers

Dip Meter

Portable MEMS Inclinometer system For measuring lateral displacement

Reed switch probeFor use with the GEO-XM system

VW Readout VWR1 Measures all types of vibrating wire instruments

G8 PLUS Data logger

Remote Smart Mux 12 CH & 6CHA modular multiplexer that allows the management of multiple sensors as part of a remote or automatic data acquisition system.

Smart Mux Interface

PROJECT SUMMARY

PROJECT NAME: Nian Dam

PROJECT DATE: 2017-2018

CLIENT: Hormozgan Regional Water Company

CONTRACTOR : Didas construction Company

CONSULTANT: Moshanir Consulting Engineers Co.


OVERVIEWNian Reservoir dam project is designed to prevent seasonal flooding and for the collection of water for agricultural purposes.

It is a clay core earth-fill dam with the height of 27.3m and crest length of 510m with four radial spillway gates and an inflow of 4630m3/s surface water, artificial feeding intake and semi-deep discharge system.

It is located 70km from Bandar Abbas.

Latest work includes the installation of Geosense sensors to automate exisiting sensors which were installed during dam construction.

MONITORINGMonitoring of the dam construction integrity and long-term safety is being carried out by recording measurements in the following key areas:

• Main dam body• Water pressures in the core shell • Inclination in the core & shell• Settlement in the core & Shell• Groundwater levels

All existing VW sensors were double checked using the VWR1 readout unit.


Nian Dam, Iran

PRODUCTS USEDVW Total Pressure Cells For measuring total earth pressures


Gordiyan Dam, Iran

PROJECT SUMMARY

PROJECT NAME: Gordiyan Dam

PROJECT DATE: 2015


CONTRACTOR : Azar Ettefag

CONSULTANT: Faraz AB


OVERVIEWGordiyan Dam is located 20 Km South East of Jolfa (East Azerbaijan Province) in Iran.

The dam provides water to the Potable & Industry. Gordiyan Dam is an earthfill dam, with a clay core. It is 1420 m in length and 40 m high and impounds a 23,000,000 m³ reservoir.


Main dam bodyPore water pressures in the coreEffective stress in the coreInclination in the core & shellSettlement in the core & ShellGroundwater levelsFoundationPore water pressures in the rockGroundwater levelsDam main drainSeepage

PRODUCTS USEDVW Piezometer HDFor measuring por pressure at foundation

Linx Datalogger with GPRS communication For Remote monitoring


Takht e Gonbad Dam, IranPROJECT SUMMARY

Name: Takht e Gonbad Dam, Iran

Year: 2018

Client: Shining Copper Company

Contractor: Shining Copper Company


OVERVIEWTakht e Gonbad Dam is located 65km North East of Sirjan (Kerman Province) in Iran. The Dam provides water for use by a Copper Mine Factory.

Takht e Gonbad Dam is an earthfill dam with a clay core. It is 800m in length and 20m high. It impounds a 15,000,000m³ reservoir.


• Foundations• Pore water pressures in the rock• Groundwater levels

PRODUCTS USEDPortable MEMS Inclinometer systemFor measuring lateral displacement

Reed Switch ProbeFor use with the GEO-XM system

Baft Dam, IranPROJECT SUMMARY

Name: Baft Dam, Iran

Year: 2018

Client: Kerman Regional Water Authority

Main Contractor: Zangan Pershia


Consultant: AB-NIRU Consulting Eng.

OVERVIEWThis Earth-Rock-fill Dam was built 160km South-East of Kerman on the Baft River. Aims of dam construction are storage of flood and river run-off for irrigation and drinking water to serve Baft and its industries.Height: 65mCrest Length: 1160 mReservoir Volume: 40 Mm3

MONITORINGMonitoring of the dam construction integrity and long-term safety is carried out by recording measurements.


PRODUCTS USEDPortable MEMS Inclinometer systemFor measuring lateral displacement

Reed Switch ProbeFor use with the GEO-XM system

Sirjan Tangueh Dam, IranPROJECT SUMMARY

Name: Sirjan Tangueh Dam, Iran

Year: 2018

Client: Kerman Regional Water Authority


Consultant: Mahab Ghodss Consulting Eng.

OVERVIEWThis Earth-Rock fill Dam was built 160 km south of Kerma. Aims of dam construction are storage of flood and river run-off for irrigation and drinking water for Sirjan and its Industries.Height: 71mCrest Length: 1100 mReservoir Volume: 38.2 Mm3

MONITORINGMonitoring of the dam construction integrity and long-term safety is carried out by recording measurements.


Joghan Dam, Iran

Jogan Dam is located in 16Km SouthWest of Bostan Abad on the Asb AbadChai River (East Azerbaijan Province) inIran.

Commissioned in 2006, the damprovides water to potable & industry.Jogan Dam is an earthfill dam, with aclay core. It is 179.5m in length and37.75m high. The Dam was constructedusing 0.55Mm³ of materials. It impoundsa 3,000,000 m³ reservoir.

Overview

Project Deta i ls

NAME: Joghan Dam, Iran

YEAR: 2009


CONTRACTOR: ALAND AB


CONSULTANT: OMRAN PAZHOHESH RAHVAR

Project Summary

Products used

~ Terminal Box (Auto & Manual)Provide a central location wheremultiple instruments can be read.

~ V-notch weirProvides a method of measuringvolumetric. Since the geometry ofthe top of the weir is known and allwater flows over the weir, the depthof water behind the weir can beconverted to a rate of flow.

~ VW Weir MonitorAutomatically measures the heightof water behind the V-notch weir

Monitor ing

As part of a rehabilitation programme,exisiting instruments were upgraded toallow for automatic readings to betaken.

In addition, seepage monitoring wasadded to detect any change in waterflow through the dam.


V1.3 11/2018

Geosense Ltd, Nova House, Rougham Industrial Estate, Rougham, Bury St Edmunds, Suffolk IP30 9ND, England

www.geosense.co.uk e [email protected] t +44(0)1359 270457

Instruments for Dam Safety Monitoring - geosense.co.uk · water storage during the lifetime of the...

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