Shanxi Jinshen Energy Co. , Ltd.

针对西部矿井浅埋煤层群多工作面协调开采难题,以山西河曲沙坪煤矿为工程背景,采用理论分析、数值模拟的研究方法,对于二盘区内多煤层工作面开采的时序和空间布局进行了分析和优化,有效指导了二盘区内的工作面布置和接续。结果表明:通过数值模拟分析实现了不同开采方案的采动响应定量化分析,重复采动的覆岩结构决定着侧向采动影响角;13104工作面需在9201和9202工作面开采后接续,对10201无明显影响;协调开采时为保障综放工作面顺序接替,需采用切顶卸压沿空掘巷技术。

Aiming at the the problem of coordinated mining of multiple working faces in shallow coal seams for balanced production benefits faced by many mines in Western China, which is mainly limited by the complex time - space conflict relationship and the complex characteristics of mine pressure. Based on the engineering background of Shaping Coal Mine in Hequ, Shanxi Province, the timing and spatial layout of multi-coal seam mining in the established No. 2 panel area are analyzed and optimized by means of theoretical analysis and numerical simulation, to guide the layout and continuation of the working face in the panel. The numerical simulation analysis of panel scale realizes the quantitative analysis of mining response of different mining schemes, and the overburden structure of repeated mining determines the influence angle of lateral mining. The 13104 working face of Shaping Coal Mine needs to be continued after the mining of 9201 and 9202 working faces, which has no obvious effect on 10201. In order to ensure the sequential replacement of fully mechanized caving face during coordinated mining, it is necessary to adopt the technology of gob-side entry driving with roof cutting and pressure relief.

张浩春. 极近距离煤层群多工作面协调开采规划研究 [J]. 煤炭工程, 2023, 55(12): 34-38.