Optimization of Roof Support Parameters of Soft Rock Roadway
In order to realize the effective control of surrounding rock deformation of soft rock roadway,taking 6303 transportation roadway of A Mine in Shanxi as the research object,the deformation characteristics and influencing factors of surrounding rock deformation of transportation roadway were analyzed.It was found that the deformation of transportation roadway was mainly caused by roof subsidence,roof fallen and loose of metal mesh net.Therefore,combined with the site conditions of 6303 transportation roadway and the previous surrounding rock control experience,it was proposed to optimize the support by adopting the active support of full roof cable+passive support of steel scaffolding+grouting and shotcrete,carrying out the shotcrete on the roof and both sides at the same time,and optimizing the supporting parameters of both sides.After engineering application,the problem of large deformation of surrounding rock in 6303 transportation roadway can be solved well,and the roof and two sides remained stable with the convergence of roof and floor and the convergence of two sides controlled within 152 mm and 94 mm respectively,meaning that the surrounding rock control effect was remarkable.The research results can provide experience for surrounding rock support work of similar soft rock roadways in other mines.
soft rock roadwayroof supportdeformation of surrounding rock
万方数据
维普
