淮北刘店煤矿构造特征及其形成机制分析

Analysis of Structural Features and Formation Mechanism in Liudian Coalmine,Huaibei

刘店煤矿地质构造复杂,严重影响了采区布置和综采块段的选择,制约了煤矿效益的发挥。依据矿井勘查及生产揭露资料系统地分析了矿井构造发育特征,并从矿区所处聚煤盆地构造演化入手,探讨了不同期次构造应力场特征及对研究区的影响,揭示了矿井构造的形成机制。研究结果显示:区内总体构造形态为一倾向北北西的单斜,次级褶皱、断层发育;矿区东部构造简单,西部构造复杂,次级褶皱被一系列断层所切割,早期的东西向褶皱被后期北东向褶皱叠加改造;矿区构造是经历了五期构造变动的结果,矿区西部的构造是影响煤矿生产的主要地质因素。

Geological structure in the Liudian coalmine is complicated, thus seriously impacted winning district layout and selection of fully mechanized mining blocks, also constrained coalmine beneficial results. Based on coalmine exploration data and production revealed information have systematically analyzed structural development characteristics. Starting from tectonic evolution of the coal accumulation basin the mine area seated, discussed tectonic stress field characteristics during different periods and their impacts on the study area, and revealed coalmine structure formation mechanism. The result has demonstrated that： the overall structural form of the area is a monocline dipping NNW, secondary folds and faults are well developed. Structures in the eastern part is simple, western part complicated, secondary folds were dissected by a series of faults, early EW folds stacked and reformed by later NE folds. Current structures in the mine area were the result of tectonic events during 5 periods; structure in western part is the major geologic factor impacts coalmine production.