大断面不稳定岩层巷道支护技术研究  

Research on Support Technology of Roadway with Large-section Unstable Strata

作　　者：何宁 He Ning(Zisheng Coal Industry Co.,Ltd.,Huozhou Coal Electricity Group Co.,Ltd.,Shanxi Coking Coal Group Co.,Ltd.,Huozhou,Shanxi 031400)

机构地区：[1]山西焦煤霍州煤电紫晟煤业有限责任公司安全科,山西霍州031400

出　　处：《江西煤炭科技》2021年第3期38-39,42,共3页Jiangxi Coal Science & Technology

摘　　要：紫晟煤业2-1012巷采用数值模拟方法分别对三种支护方案下巷道围岩塑性区及变形量进行分析,得到最优支护设计参数。模拟结果表明,巷道围岩稳定性受锚杆锚固力影响较大,增大锚固力可以控制塑性区的发育,达到控制巷道围岩稳定性的目的。工作面回采期间,对巷道顶板及两帮位移量监测结果表明,巷道顶板最大移近量为92.4 mm,两帮最大移近量为70.2 mm,巷道围岩变形量基本位于合理范围内,现有支护能够保证巷道围岩稳定性。To obtain the optimal supporting design parameters,the author analyzes the plastic zones and the deformation of roadway surrounding rock under three kinds of supporting schemes in 2-1012 roadway by numerical simulation,whose simulation results show that due to the influence of bolt anchorage force on surrounding rock stability,the anchoring force can be increased to control the development of plastic zone and realize the control of roadway surrounding rock stability;and the deformation of roadway surrounding rock is basically within a reasonable range with the maximum convergence of 92.4 mm in roadway roof and 70.2 mm in two sides under the existing support.

关 键 词：支护设计 围岩稳定性 数值模拟 塑性区 

分 类 号：TD353.6[矿业工程—矿井建设]