Stability of boundary pillars in transition from open pit to underground mining

来源 :Journal of Central South University | 被引量 : 0次 | 上传用户:lijie6857272
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Based on the height of back-filled materials,thickness of ore body,height of boundary pillar and dipping angle of ore body and water pressure,the safety factors of all the pillars are calculated with the limit equilibrium method.The calculation results pr
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