近距离坚硬顶板薄煤层开采支护技术

Face support technology for use in contiguous thin coal seams under hard roof

近距离薄煤层在准备采煤工作面时的巷道掘进中,受上层残余压力的影响,矿压显现突出,采用常规的巷道支护方法不能有效控制矿压。文章根据大同煤矿集团公司晋华宫矿实际情况,介绍了关于近距离采空区下半煤巷掘进工艺、支护和工作面开采期间有效控制矿压的方法。

In contiguous thin coal seams, it is a frequent phenomenon that when heading is in progress for the preparation of coal faces, roof pressure increase becomes serious due to the remnant pressure exerted from the roof. In this case, it is not proper to use the conventional supports. On the basis of the experiences in the production activity in Jirlhuagong Coal Mine where different types of supports are used , the author presents some solutions to heading, supporting in coal/rock drifts and mine pressure controlling during mining process under goal of contiguous coal seams above.