摘要
为保障22117回风顺槽围岩的稳定,采用理论分析的方式进行围岩变形破坏机理的分析,基于分析结果得出,顶底板及两帮拉裂和剪切破坏形态,影响顶板岩层稳定的主要因素为水平地应力和巷道围岩压力;结合巷道地质条件,确定巷道采用锚网索支护方案,结合围岩变形机理记性支护参数的具体设计,采用数值模拟进行支护可行性分析,并在工作面回采期间进行围岩变形量监测分析。结果表明:回风顺槽在现有支护方案下,顶板下沉量及两帮移近量的最大值分别为180 mm和142 mm,支护方案控制了围岩的变形,满足回采巷道使用要求。
In order to ensure the stability of the surrounding rock in the 22117 return airway,theoretical analysis is used to analyze the deformation and failure mechanism of the surrounding rock.The main factors are horizontal in-situ stress and the pressure of the surrounding rock of the roadway;combined with the geological conditions of the roadway,the roadway is determined to adopt the bolt-mesh-cable support plan,combined with the specific design of the surrounding rock deformation mechanism and the supporting parameters,and the feasibility analysis of the support is carried out by numerical simulation.And monitoring and analysis of surrounding rock deformation during the mining face.The results show that under the existing support scheme,the maximum value of the roof subsidence and the distance between the two sides of the return air trough are 180 mm and 142 mm,respectively.The support scheme controls the deformation of the surrounding rock and meets the requirements of the use of mining roadways.
作者
王保国
WANG Baoguo(Shanxi Lu'an Group Lu'ning Xin Yu Coal Industry Co.,LTD.,Ningwu 036706,China)
出处
《煤矿现代化》
2021年第5期26-29,共4页
Coal Mine Modernization
关键词
回采巷道
变形机理
锚杆支护
围岩变形
Mining roadway
deformation mechanism
bolt support
surrounding rock deformation
作者简介
王保国(1986-),男,山西宁武人、本科,2015毕业于东北大学采矿工程专业,现从事煤矿生产技术工作,助理工程师。
