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根据新疆龟兹矿西井近距离煤层坚硬顶板条件下上行开采的实际情况,认为在下部采空区切眼边界及运输巷处的“悬空结构”将给上行工作面的安全回采带来较大的安全隐患。基于顶板-煤层-底板“三位一体”矿压多元控制技术理念,采用理论分析与数值模拟相结合的方法确定相应的技术参数,提出了上行开采过程中采用顶板破断、煤层减压、底板注浆充填及工作面推进方式优化相结合的综合防治措施。现场应用取得了良好效果。
According to the actual situation of ascending mining under the condition of hard roof in the close range coal seam of Kuqa Mine in Xinjiang, it is considered that the “hanging structure” at the cutting edge of the lower goaf and at the transportation lane will bring larger safety recovery to the upper working face The security risks. Based on the roof - seam - floor “Trinity ” multivariate pressure control technology concept, the theoretical analysis and numerical simulation method to determine the appropriate technical parameters, the proposed mining process using the roof broken, decompression, floor note Pulp filling and optimization of the way to promote the comprehensive combination of integrated control measures. Field application has achieved good results.