近距离煤层开采矿压及覆岩运动规律研究

Study on the regularities of strata behaviors and overlying rock movement in the mining of close distance coal seams

通过观测纳林庙煤矿1号井近距离煤层开采时的矿压显现规律,分析了下层煤采煤工作面顶板的覆岩活动规律,基本掌握了采煤工作面两顺槽、工作面推采过程中的覆岩压力变化规律,及下层煤采煤工作面顺槽内错、外错布置方式的优缺点,为制定采煤工作面推采过程中的支护措施、保障开采安全提供借鉴。

Through observing the law of strata behaviors during the close distance seam mining in No.1 mine of Nalinmiao coal mine,the movement law of overlying strata in mining face of lower coal seam was summarized,the change rule of roof pressure of mining roadways in the mining process was mastered,and the advantages and disadvantages of inside-staggered and outside-staggered layout modes of mining roadways in the lower seam coal mining face were analyzed,which provides a reference for formulating support measures and ensuring mining safety in coal mining face.