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Design of Waterproof Coal Rock Pillar Under Goaf Ponding District Mining in Xinxing Coal Mine

Zhiwei Liu

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Abstract

Stagnant water in the mined-out area of coal mining under the waterproof design bearing rock mine production safety and resource development is reasonable,it is completed under the guidance of the theory.Taking the extension design in Xinxing Coal Mine as an example,by analyzing the destruction of cover rock,calculating the height of roof falling zone,fracture zone and protective layer,finally the coal rock pillar in the +150～+180 m level,is taken as the waterproof coal rock pillar.The essential mining technical measure is adopted.The reliable scientific basis is provided for ±0 m level safe mining.

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What this paper is about

Stagnant water in the mined-out area of coal mining under the waterproof design bearing rock mine production safety and resource development is reasonable,it is completed under the guidance of the theory.Taking the extension design in Xinxing Coal Mine as an example,by analyzing the destruction of cover rock,calculating the height of roof falling zone,fracture zone and protective layer,finally the coal rock pillar in the +150～+180 m level,is taken as the waterproof coal rock pillar.The essential mining technical measure is adopted.The reliable scientific basis is provided for ±0 m level safe mining.

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Available abstract

Stagnant water in the mined-out area of coal mining under the waterproof design bearing rock mine production safety and resource development is reasonable,it is completed under the guidance of the theory.Taking the extension design in Xinxing Coal Mine as an example,by analyzing the destruction of cover rock,calculating the height of roof falling zone,fracture zone and protective layer,finally the coal rock pillar in the +150～+180 m level,is taken as the waterproof coal rock pillar.The essential mining technical measure is adopted.The reliable scientific basis is provided for ±0 m level safe mining.

Key concepts: Mining engineering, Ponding, Coal mining, Longwall mining, Roof, Coal, Pillar, Bedrock

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