| Three soft coal roadway has been one of the process of tunnel excavation supporting problem, this paper in Renlou Coal Mine Roadway Excavation Ⅱ5110machine as the research background, through theoretical analysis, numerical simulation study and field survey as the research method, to study the parameters of anchor net support, reasonable optimization of roadway support parameter.Analysis of either the characteristics of surrounding rock in three soft coal seam roadway in Renlou mine, points out that this kind of roadway supporting key technology and current some feasible combined support support scheme, for solving Renlou Coal Mine Ⅱ5110machine tunneling roadway support, the support theory analysis, the mechanism of bolt and anchor cable analysis, shows that the anchor net supporting beam support is to meet the requirements for supporting, according to theoretical analysis and numerical simulation and the engineering analogy method to optimize supporting scheme was proposed in this paper. Through field practice, the effect of support is monitored, the effect of supporting is analyzed, the feedback information is realized, and the dynamic design of the combination of the preliminary design and engineering monitoring is realized.. Finally, the conclusion can be used as the basis of three soft coal roadway supporting. |
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