沙坪煤矿8^#上煤极近距离跨空巷回采技术

Extreme Distance Cross Mining Technology in Shaping Coal Mine 8# Upper Coal Seam

为保障沙坪煤矿8#上煤极近距离跨空巷的安全回采,分析了层间岩层有效承载层的厚度和承载能力,由此确定了空巷密集木垛充填支护的合理参数,并在工作面跨空巷回采过程中,采取了一系列安全技术措施。工作面和空巷矿山压力监测结果表明,在跨空巷回采过程中,空巷围岩没有发生剧烈的变形破坏,验证了空巷木垛支护的合理性和安全技术措施的有效性。

To guarantee the safety mining of extreme distance cross abandoned roadway in Shaping Coal Mine 8^# upper coal seam, the thickness and carrying capacity of interlayer rocks effective bearing layer is analyzed, thus the reasonable parameters of dense wood crib filling support is determined, and a series of safety techincal measures were taken in the process of cross mining. The result of mine ground pressure monitoring in workface and empty roadways showed that the severe deformation and failure of surrounding rock of empty roadways did not happen in the process of cross mining, so the rationality of wood crib support and the effectiveness of safety technical measures were verified.