Wel Come To Casp Lab

T.M.A.E.SOCIETY POLYTCHNIC

Presented by: PAVAN KUMAR

Topic :BENCH PARAMETERS

Staff In charge : Hod :Mahima Priyadharshini T. L. Yoganand

INTRODUCTIONCONTENTS :

• DEFNITION OF BENCH • HIGHT OF THE BENCH• Slope OF THE BENCH• Width OF the BENCH• Length of the bench

DEFNITION OF BENCH

BENCH :One of to more divisions of a

coal or any other mine seam sepratered by the slate of formed by the process of cutting.

Bench Height:• Bench Height:

The bench height is usually decided by the economic reach of the mining equipment used in the mine. As a thumb rule, a bench height is equal to the economic bucket height of an excavator (like shovel or loader) plus 3 m. The thickness of the orebody and its dip and the thickness overburden also play a deciding role in the bench height. As mentioned in Coal Trading, the bench height depends up on:a) Deposit character and geology: selectivityb) Production strategy: ore/waste ratios, blending requirements, no. of working faces, operating/capital costs, etc.c) Slope stability considerationsd) Equipment set / equipment specific optimum geometry

• Bench Slope:Bench Slope is decided by the geo-technical conditions of the overburden and the orebody

Bench Slope:

Bench Width:Bench Width:

This is usually decided based on the space required for the operation of the equipment on it.

Bench Length:• Bench Length:

The length of the bench depends on the production rate. A bench will be longer for higher production rate. Usually, blasting at one bench is done not more than once a week. The extent of the ore body also has a deciding role here.

Parameters of Iron ore Mines

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