关键词: 锚索束, 重复跨采, 软岩巷道, 围岩控制

Abstract: The deformation and destroying of soft rock roadway was serious in repeated cross mining. In order to solve the support difficult problem of this condition, taking Ⅱ82 transport rise of Luling coal mine as the engineering background, we summarized distortion and failure character of roadway. Through strength experiment of rock mechanics, field borehole observation and theoretical analysis, main reason for roadway of losing stability was studied. It were low strength of surrounding rock, unreasonable choice of support method and repeated cross mining influence. Finally, the control technology of "conventional anchor net spray + shallow surrounding rock grouting reinforcement + mine high-strength anchor cable bundle combined with hollow grouting anchor cable support" was proposed. Field practice showed that the total displacement of roof, floor and sides of roadway in the test section was 20mm, 42mm and 25mm respectively during the cross mining of the working face. It was 43%, 60%, 57% lower than the conventional support roadway in the non-test section, the stability control of the surrounding rock of the roadway was realized.