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采空区侧巷道围岩变形量较大,不仅影响工作面的正常回采,更有发生冲击矿压危险的可能性。为了控制采空区侧巷道围岩变形量,以某矿7521工作面为研究背景,通过研究采空区侧巷道围岩变形量较大的机理,利用定向水力致裂技术,达到控制7521工作面采空区侧巷道围岩变形量的目的。定向水力致裂措施的成功实施,不仅实现了7521工作面的正常回采,也为该矿提供了一项降低采空区侧巷道围岩应力集中的措施。
Large deformation of surrounding rock in the sidetrack of goaf not only affects the normal mining face, but also has the possibility of rock burst. In order to control the deformation of surrounding rock in goaf side, taking the 7521 working face of a mine as a research background, by studying the mechanism of large deformation of surrounding rock in the sidetrack of the goaf, the directional hydraulic fracturing technology is used to control 7521 face The purpose of the deformation of surrounding rock in the sidetrack of goaf. The successful implementation of the directional hydraulic fracturing measures not only realizes the normal recovery of 7521 working face, but also provides a measure to reduce the stress concentration of the surrounding rock in the sidetrack of the goaf.