Application and Principle of Bolt-Mesh-Cable Control Technology in Extremely Soft Coal Seam Roadway

The extremely soft coal seam roadway has the problems of low surrounding rock strength and difficult support. Based on engineering background mining in Quandian mine, this paper adopts research method combining numerical simulation field measurement. stress field, displacement support force, loading arch structure characteristics under bolt-mesh-cable existing shed-cable are compared, control principle is expounded. Our study indicated that compared with nonsupport support, pressure range increases, gradient decreases when used. difference decrease. components achieve coordination. thickness formed large, compressive evenly distributed. significantly improves environment stability roadway. practice shows deformation small after adopted, section during excavation meets requirements safety production.