Research On Bolt And Tight Wire Support Of Wangcun Slope Compound-roofed Coal Roadway

Amounts enhance ceaselessly with the coal resources exploitation, the coal resources exploitation develops gradually to depth direction and the complicated geology condition coal seam. One of problem being to be to need to carry out detailed research in the compound roof shoring that the coal seam exploits in this process. But the compound roof tunnel scatters broadly in our country coal mine, whether can finish resolving it's shoring problem, be that coal exploits the key developing in depth with safety at work.In this paper, based on the 5210 wangcun slope coal roadway support for engineering background, with theoretical analysis, numerical simulation and field monitoring combination of research methods, support of compound-roofed was studied.In-depth analysis of the complex roof deformation and failure of the main factors, failure process and failure mechanism. Fractured rock mass structure and distribution of special geological conditions and mechanical properties of rock and so on hydrogeological conditions in varying degrees, affect the deformation complex roof damage; On this basis, analysis of the bolt (cable) supporting the role of mechanism, a bolt (cable) supporting design, anchor (Cable) Support can provide support on the rock surface resistance, limited to the roadway surrounding rock deformation in deep development; improve the shear strength between rock, stop the rock between separation, dislocation; improve the surrounding rock stress and the stress state of rock; established numerical model FLAC3D Bolting design was calculated results showed that: Anchorage coal mine roadway support , Roof displacement, floor heave, tunnel sidewall displacement can be controlled within safe allowable value; will design the anchor network (cable) support scheme applies to 210 wangcun slope coal roadway supports and protections project practice, and on-site monitoring results are analyzed.. The result indicated that the anchor rod (rope) supports and protects the parameter plan is safe effective, practical and feasible.