Research on Roadway Support Technology for Loose and Fractured Surrounding Rock under High Ground Stress
Affected by high ground stress,the surrounding rock of the transportation roadway in the 3410 working face of a certain coal mine is severely deformed and damaged.By analyzing the depth and mechanism of surrounding rock failure,a joint support scheme of"anchor rod+grouting anchor cable+metal mesh+sprayed concrete+grouting pipe is adopted".On site engineering practice has shown that the maximum deformation of the top,bottom,and two sides of the roadway is 120 mm and 115 mm,respectively,both within the safe range,the optimized support scheme can ensure the safe use of the roadway.
high ground stressloose and fractured surrounding rockroadwaysupportgrouting
万方数据
维普
