韩家户沟—马家台勘查区Fh-4断层特征及其对煤层赋存的影响

Characteristics of Fh-4 fault in Hanjiahugou—Majiatai exploration area and its influence on coal seam occurrence

为了揭示韩家户沟—马家台勘查区断层特征与煤层赋存特点,为将来矿井建设开发提供依据,研究了勘查区及其周边地区历年地质资料,对该区构造与煤层赋存进行了综合分析探讨。结果表明,F h-4断层为区域大断裂F 19的最南端部分,基本控制了勘查区含煤地层的东部边界,是区内主要控煤构造,性质先逆后正,整体近南北走向,断面倾向东,具有多期性、复杂性的特点,在区内由F h-4a逆断层、F h-4b逆断层、F h-4正断层3个分支断层组成,造成了区内煤层赋存的增厚、缺失、倒转及多次重复现象,断层带内煤层相较正常层位煤层埋深浅、倾角大、赋存不稳定,综合来说具有较大的优先开发价值。

In order to reveal fault characteristics and coal seam occurrence in Hanjiahugou—Majiatai exploration area,to provide the basis for future mine construction and development,to study the geological data of exploration area and its surrounding area over the years,and to make a comprehensive analysis and discussion on the structure and coal seam deposits in the area.The results showed that F h-4 fault is the southernmost part of the regional large fracture F 19,which basically controls eastern boundary of coal-bearing strata in survey area.It is the main coal control structure in the area,its properties are reversed and then positive.The overall direction is near North and South,and the cross-section tends to be East.It is characterized by multiphase and complexity.It consists of three branch faults in the area:the F h-4a inverse fault,the F h-4b inverse fault,and F h-4 positive fault,resulting in thickening,loss,and reversal of coal seams in the area.Repeated phenomenon,the fault zone coal phase is shallow,inclined,and unstable than the normal seam,which has a higher priority development value.