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分析了切顶卸压收尾技术在安全的前提下减小了巷道保护煤柱宽度及巷道受采动影响产生的变形,更好地保护了回采动压影响区域内巷道的形成。切顶卸压收尾工艺、支架前方顶帮支护方法,预裂爆破切缝的设计,还有从支架顶梁上方向采空区侧定向预裂爆破切顶,切断部分顶板的矿山压力的施工方法,有效减弱了顶板应力集中对附近巷道的影响。杜儿坪矿成功应用了该技术,并得出该技术成功应用的关键因素是不出现大的应力集中区。
Based on the premise of safety, the tailing pressure relief technology is analyzed to reduce the width of coal pillar and the deformation caused by mining, and to better protect the formation of roadway in the area affected by dynamic pressure. Top pressure relief finishing process, support the top of the top support method, the presplit blasting crack design, as well as from the top of the support beam to the gob side of the direction of the presplit blasting cut the top, cut off part of the roof of the mine pressure construction Method, effectively reducing the roof stress concentration on the impact of the nearby roadway. Du Erping mine successfully applied the technology, and concluded that the successful application of this technology is the key factor in the absence of large stress concentration area.