倾斜厚煤层掘进工作面冲击地压防治技术的实践

Practice of prevention and control technology of rockburst in driving face of inclined thick coal seam

以山西宁武大运华盛南沟煤业4504工作面掘进期间的冲击地压研究为背景,分析得到冲击地压的发生机理,通过对掘进迎头、巷道两帮及底板进行大直径钻孔压爆破卸压,化化巷道断面并采用合理支护方法,现场的冲击危险性得到有效控制。

Based on the study of rockburst during the excavation of 4504 working face of Shanxi Ningwu Dayun Huasheng Nangou Coal Industry Co.,Ltd.,the mechanism of rockburst is analyzed.Through the large-diameter drilling and blasting pressure relief on the head of the excavation,the two sides of the roadway and the floor,the roadway section is changed and the reasonable support method is adopted,the impact risk on the site is effectively controlled.