Cuijiagou Coal Mine Soft Rock Roadway Supporting Research

Cuijiagou Coal Mine is located in Northwest of Tongchuan City, 38Km, Shaanxi Province,Now the mining depth is 300 ? 400m, with complex geological conditions, soft tunnel surrounding rock, severe mining pressure, and serious deformation of the roadway. To the bottom of the drum, the tunnel was excavated about 20 days, with a height of 300mm. The severe mining pressure appears to cause the tunnel section to shrink, which seriously affects the transport, ventilation and pedestrians. It is a serious hazard in the safety production of the mine.Thus,with the increase of mining depth,the researches on the control of surrounding rock, the supplement and adjustment of the support system and the dynamic stability of the tunnel are becoming more urgent and important.Research found that the East Mine 2209 fully mechanized caving face return roadway using rectangular section, anchor net support. By roadway deformation monitoring, laboratory testing of rock mechanics parameters, rock composition analysis and numerical simulation methods and means ,they have made profound studies on the existing roadway support in the form. And put forward the combined supporting scheme of the anchor roof, that is, the trapezoidal micro arch retractable support and anchor mesh combined support.The research shows that the combined supporting scheme can solve the 2209 fully mechanized caving face groove supporting problem.The subject belongs to the composite layered roof soft rock roadway support in question,the initial results of this study have a helpful effect on the similar conditions of roadway support programs.The research shows that this kind of combined supporting scheme can solve the 2209 fully mechanized caving face groove supporting problem. This subject belongs to the support of the composite layer roof soft rock mining roadway, the research results of this study have a reference to the selection of the support scheme of the mining gateway under similar conditions.