Study on Roof Bolting with Anchor and Wire Mesh Coupling Support Technology in Weakly Consolidated Soft Rock Roadway

In order to solve the support difficult problem of weakly consolidated soft rock roadway, this paper took weakly consolidated soft rock roadway of Yili No. 1 Mine as a study object, combined physical- mechanical properties and primary rock stress test results, roof bolting with anchor and wire mesh coupling support schem e was introduced by optimizing support parameters on the basis of analyzing the major causes of deformation and failure of roadway surrounding rocks. On the premise of verifying the reliability of the new support scheme by using numerical simulation, the three stages of roadway surrounding rock deformation was summarized. Accordi ng to field observation and analysis after applied the new support scheme, which were the influence stage of roadway excavation, deformation limited stage and steady deformation stage. The results showed that roof- to- floor average convergence was 50 mm, rib- to- rib average convergerce was 23 mm, the time of deformation steady reduced to 15 days, roof boting with anchor and wire mesh coupling support could control roadway surrounding rock deformation effectively, improve the state of surrou nding rock stress and mobilize the bearing capacity of surrounding rock in depth adequately.