山西煤炭
山西煤炭
산서매탄
Shanxi Coal
2015年
5期
58-60
,共3页
大采高%塑性区%区段煤柱%优化分析
大採高%塑性區%區段煤柱%優化分析
대채고%소성구%구단매주%우화분석
large-mining-height%plastic zone%section coal pillar%optimization analysis
针对三元福达矿区段煤柱设计偏大、采区采出率较低的生产实际问题,综合采用现场实测、数值模拟、理论计算等方法,对三元福达矿大采高区段煤柱宽度进行优化分析. 理论分析与现场实测表明:煤柱采空区侧形成的的塑性区宽度为6.31 m,工作面回采扰动形成的塑性区宽度为6~8 m,煤柱内弹性区宽度取4.31 m.据此结合煤层赋存条件,通过三维数值模拟软件对不同煤柱宽度下应力及位移分布特征进行了分析,确定区段煤柱合理宽度为19 m.
針對三元福達礦區段煤柱設計偏大、採區採齣率較低的生產實際問題,綜閤採用現場實測、數值模擬、理論計算等方法,對三元福達礦大採高區段煤柱寬度進行優化分析. 理論分析與現場實測錶明:煤柱採空區側形成的的塑性區寬度為6.31 m,工作麵迴採擾動形成的塑性區寬度為6~8 m,煤柱內彈性區寬度取4.31 m.據此結閤煤層賦存條件,通過三維數值模擬軟件對不同煤柱寬度下應力及位移分佈特徵進行瞭分析,確定區段煤柱閤理寬度為19 m.
침대삼원복체광구단매주설계편대、채구채출솔교저적생산실제문제,종합채용현장실측、수치모의、이론계산등방법,대삼원복체광대채고구단매주관도진행우화분석. 이론분석여현장실측표명:매주채공구측형성적적소성구관도위6.31 m,공작면회채우동형성적소성구관도위6~8 m,매주내탄성구관도취4.31 m.거차결합매층부존조건,통과삼유수치모의연건대불동매주관도하응력급위이분포특정진행료분석,학정구단매주합리관도위19 m.
In Sanyuan Fuda Mine, there are some problems in production such as large section coal pillars and low mining rate. The pillar width in large-mining-height section was optimized through an integrated method with field measurement, numerical simulation and theoretical calculation. The study results show that the width of plastic zone caused by mined-out area, by mining disturbance, and in the pillars is 6.31m, 6.0m-8.0m, and 4.31m, respectively. Based on occurrence condition, the 3D numerical simulation on the stress and displacement distribution under different pillar widths determines the rational width of the section pillars to be 19m.
