摘要
针对长平煤矿高水平应力条件下大断面沿底留顶巷道难以支护的现状,通过地应力测试、钻孔窥视、数值模拟等方法进行了巷道顶板围岩破坏分析。根据分析的结论,提出43042巷道沿顶布置支护方案,并通过设置测站实测表面位移、顶板离层、测力锚杆等方法对其稳定性进行了分析,验证了43042巷道支护方案的合理性。
Aiming at the condition in Changping mine that the support is difficult under high horizontal stress for the largecross section roadway along the bottom with top coal remained, stress testing, drilling peep, numerical simulation andother methods were applied to analyze the surrounding rock failure of roadway roof. According to the conclusions, thesupporting scheme of 43042 roadway along the top was proposed, and the stability of the support was analyzed by settingobservation station to measure surface displacement, roof separation, rock - bolt dynamometer and other methods, thestability were analyzed to verify the rationality of 43042 roadway.
出处
《煤炭工程》
北大核心
2014年第7期34-36,共3页
Coal Engineering
关键词
巷道支护
地应力
高水平应力
钻孔窥视
数值模拟
roadway supporting
geostress
high horizontal stress
drilling peep
numerical simulation
