大佛寺矿大断面巷道围岩失稳机理及支护技术研究OA
Research on the Large section roadway instability mechanism and support technique in the Dafosi mine
以大佛寺矿41103工作面采区巷道为研究对象，采用数值模拟，研究巷道断面的增大对巷道的变形破坏机制的影响，得出随着巷道宽度的增大顶板及两帮塑性区范围、深度不断增大，同时巷道两肩角处的压剪破坏区与顶板张拉破坏相交，加剧顶板与两帮的破坏程度，引起围岩失稳的现象。因此，针对大断面巷道支护难题，提出了高强度预应力锚杆支护和锚索加强支护，并成功地应用于工业实践。
According to the numerical simulation at 41103 Mining area roadway in the Dafosi mine. Research roadway deformation and failure mechanisms for increasing the impact of the cross-section of roadway, Come with tunnel roof and the two helped to increase the range of plastic zone width, depth increasing, while pressure roadway shoulders corner of shear failure zone intersects with the roof tensile failure, exacerbate the degree of damage to the roof and tw…查看全部>>
翟恒玉
陕西彬长矿业集团文家坡矿业公司，陕西咸阳 712000
矿业与冶金
采区巷道大断面高预应力锚杆数值模拟
mining area roadwaylarge sectionhigh prestressed anchornumerical simulation
《山东煤炭科技》 2014 (10)
63-64,69,3
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