Technology of Bolt and Cable and Bolt- Grouting Coupling Support in Deep High Stress and Soft Rock Roadway

In order to solve the problem of deformation and damage in deep high stress and soft rock roadway, theoretical analysis and the site observation method were applied to propose the technology of bolt and cable and bolt- grouting coupling support. Based on shallow deep hole grouting in surrounding rock and optimized s upport parameters to make the rock forming subject bearer and high rigidity of bearing structure in the anchorage area, to prevent the anchorage area of strata rock em ergence bed separation. The results showed that the technology of bolt and cable and bolt- grouting coupling support made the roadway deformation reducing by about 80%, floor heave reducing by about 65% and almost no bed separation, the deep soft rock roadway was controlled effectively.