盘南刘家田井田逆冲推覆构造特征

刘家田井田总体构造特征为逆冲推覆构造,主要分为F2断层下盘基底构造单元和上盘推覆体构造单元。推覆体构造单元断层主要发育在推覆体前缘和西部软弱岩组一带,并伴有褶皱现象。基底单元东部断层较发育,构造相对简单;西部由于受推覆构造运动的影响,断层较发育,与F4断层呈"y"形组合特征,破坏了煤层的连续性,对煤层赋存产生较大影响。加强刘家田井田构造特征及控煤作用分析,对该井田深部及盘县逆冲断裂带附近找煤具有重要意义。

Thrusting Nappe Structural Characteristics in Liujiatian Minefield,Southern Panxian

The general structure in the Liujiatian minefield is a thrusting nappe structure, taking the F2 fault surface as the separating surface divided into footwall basement and hanging wall nappe two structural elements. Faults in nappe element are mainly developed in the nappe front margin and western part weak rock series surroundings, accompanied by fold phenomenon. Faults are rather developed in the eastern part of basement element, relatively simple structures;in the western part, because of impact from nappe structural process, faults are well developed, along with fault F4, presented a“Y”typed combination, disrupted coal seam continuity, largely impacted coal seam occurrences. To strengthen the minefield structural characteristics and coal controlling analysis has significance in the minefield deep part and Panxian thrusting faulted zone nearby coal prospecting.