摘要
针对王行庄煤矿11091底抽巷现场实际情况,通过弹塑性理论分析,结合Hoek-Brown准则,计算出底抽巷帮部围岩松动圈厚度为2. 28 m;通过超声波测试与光学钻孔窥视测试方法得到松动圈厚度平均为2. 67 m。结果显示,理论分析结果与现场测试结果误差仅为15%,理论分析与实测结果一致。
According to the actual situation of 11091 floor suction roadway in Wanghangzhuang Coal Mine,the thickness of loosening zone around the roadway side is calculated as 2. 28 m by elastic-plastic theory analysis and Hoek-Brown criterion,and the average thickness of loosening zone is 2. 67 m by ultrasonic testing and optical borehole peeping test. The results show that the theoretical calculation result is only 15% less than the actual measured result,and the theoretical calculation result is consistent with the field measurement.
引文
[1]袁亮.我国深部煤与瓦斯共采战略思考[J].煤炭学报,2016,41(1):1-6.
[2]董方庭,宋宏伟,郭志宏,等.巷道围岩松动圈支护理论[J].煤炭学报,1994(1):21-23.
[3]王睿,袁岽洋,张进增,等.基于Hoek-Brown强度准则的隧道围岩松动圈分析[J].中国安全生产科学技术,2017,13(3):58-63.
[4]张立松,闫相祯,杨秀娟,等.基于Hoek-Brown准则的深部煤层钻井坍塌压力弹塑性分析[J].煤炭学报,2013,38(1):85-90.
[5]高琨鹏,李学彬,程致远,等.声波法及钻孔法在深井软岩巷道松动圈测试中的应用研究[J].煤炭技术,2018,37(1):62-64.