基于监测数据的巷道围岩-支护结构稳定性预测分析

Prediction on Stability of Roadway Rock-Support Structure Based on Monitoring Data

以新桥煤矿2107轨道巷作为研究对象,采用巷道变形监测和岩石力学理论,建立考虑时间因素在内的围岩变形和锚杆(索)支护载荷方程,通过研究估算围岩在服务年限内的变形量、持续变形速率和锚杆(索)支护载荷变化,判断支护结构发生过载的时间,为支护工程的隐患排查、制定合理的治理措施赢得主动应对的时间。

Taking the 2107 track roadway in Xinqiao Coal Mine as research object,based on the roadway deformation monitoring technology and rock mechanics theory,the paper established a derivation of equations considering time factor on the roadway deformation and anchor bolt（cable） support load,through the estimating the change of deformation amount,continued deformation rate and bolt（cable） support load in service period,to judge the occurring time of support structure overload,so as to eliminate the hidden danger of support engineering,formulate reasonable measures,and to gain the initiative response time.