义马煤田南部逆冲推覆构造及其对煤层赋存的控制研究

Study on the Thrust-nappe Structures in South Part of Yima Coalfield and Its Control of Coal Seam's Occurrence

运用运动学、动力学和沉积学等学科理论,分析了义马煤田逆冲推覆构造演变及其对煤层的控制及影响;结合区域构造演化史和井巷揭露,总结出不同盆地演化形成的5种控煤模式,确定了不同控煤模式下煤层赋存状态,指出找煤重点应放在F16断层以南,槐树凹—石板沟—张大池一线以南2 km方向为主要目标区,并采用钻探为主、物探测井结合的找煤方法,探查深部煤炭的潜在资源量。

This paper analyzes the evolution of thrust-nappe structure in Yima coalfield and its control of and influence on coal seam by using the kinematics, dynamics, sedimentology and other subject theories, and connecting with the regional tectonic evolution history and roadway’s disclosure, summarizes five kinds of coal-control mode formed by different basin evolution, and determines coal seam’s occurrence status under different coal-control modes, and points out that the coal prospecting emphases should be placed in the south of F16 fault, the main target zone is two kilometer in the south of the Huaishuao -Shibangou-Zhangdachi Line, the coal prospecting method is giving priority to drilling and combining geophysical prospecting and well logging to explore the deep coal seam’ s potential resource quantity.