Taking a.mine roadway as the research object,using suspension,combined beam theory calculation to determine the support parameters,and put forward three kinds of support schemes,the peripheral rock displacement,stress difference is relatively small;for the plastic zone range,compared with scheme 2,scheme 3 plastic zone range becomes larger,but the difference with scheme 1 is small,in line with the requirements of roadway safety excavation;for the anchor cable force,scheme 3 can give full play to the active support performance of anchor cable,and the layout of the anchor cable is more reasonable.The layout of anchor cable is more reasonable.In addition,compared with scheme 1 and 2,each row of anchor rods and anchor cables in scheme 3 is reduced by 1,and the cost of tunnel support is low,so scheme 3 is optimal.
suspension theorycombined beam theoryanchor cable support
NETL
NSTL
维普
万方数据
