摘要
本文从力学变形分析出发,结合区域构造环境和岩石力学性质的分析,把渭北煤田东部煤系基底奥灰岩赋存区划分为构造压缩区和相对拉张区两种类型的构造区。在压缩区各种构造形迹以闭合型为主,在拉张区则以开启型为主。因而在压缩区奥灰水处于滞缓或缓慢迳流状态,在拉张区则处于强迳流状态。矿井突水事故多发生于拉张区,而在压缩区则可能性较小。
Based on the mechanical deformation analysis and combined the analysis of region structural environment with mechanical properties of rocks, the occurrence district of the ordovicion limestone below the coal bearing strata in the east part of weibei Coalfield is divided into two types, structure constricted and relatively opened districts. All of structural traces in strncture constricted district are mainly of closed type, but in structure relatively opened district of opened type. Hence, the groundwater in ordovicion limestoue in constricted district is in the slow run-off state, isin fast me-off state The accident of mine influx and in opened district, water occurs mostly in opened district, and it is impossible in consitricted district.
出处
《西安矿业学院学报》
北大核心
1992年第1期48-53,共6页
Journal of Xi'an University of Science & Technology
关键词
构造压缩区
相对拉张区
煤田
structure constricted district, structure relatively opened distract, closed type, opened type
