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首页> 外文会议>Proceedings of 2009 international symposium on risk control and managment of design, construction and operation in underground engineering >Analysis on the Gate Roadway Surrounding Rock model and Stability
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Analysis on the Gate Roadway Surrounding Rock model and Stability

机译：巷道围岩模型及稳定性分析。

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摘要

Based on the overlying multi-strata spatial structure theory and mechanics analysis, main roof fracture line and stress distribution rules in inclined direction were studied; four types of mechanical model were designed, those were embedded model,of which basic roof fracture line was near roadway; external embedded model, of which basic roof fracture line was near gob, endo model, of which basic roof fracture line was riding on roadway, and the circumscribedd model, of which basic roof fracture line was located in gob. The mechanics model was established under different environment conditions in order to simulate the material deformation characters with different mechanics deformation elements combination. Based on numerical simulation and similar material simulation, the general regulation of strata behaviors for different mechanics models have been analyzed comprehensively. The results indicated that the roadway retained has been influenced greatly with different fracture line of block B; the surrounding rock deformation of the endo model is the largest and that of the circumscribedd model is the least, when the filling strength is low; however, when the filling strength is high, the yield zone changes little while the surrounding rock deformation of the embedded model is the largest, that of the endo model is the least and the range of stress field in the roadway upper side is wide.
机译：在此基础上，利用多层地层空间结构理论和力学分析，研究了主屋盖裂缝线及倾斜方向的应力分布规律。设计了四种类型的力学模型，即嵌入式模型，其中基本屋面裂缝线在巷道附近。外部埋入模型（基本屋顶裂缝线靠近采空区），内埋模型（基本屋顶裂缝线位于巷道上）和外接模型（外部割入模型），其中基本屋顶裂隙线位于采空区中。建立了在不同环境条件下的力学模型，以模拟具有不同力学变形元素组合的材料变形特性。在数值模拟和相似材料模拟的基础上，综合分析了不同力学模型的地层行为的一般规律。结果表明，不同的B区块裂缝线对保留的巷道影响较大。填充强度低时，内模的围岩变形最大，外切模型的围岩变形最小。然而，当填充强度高时，埋藏模型的围岩变形最大，屈服区变化不大，内模的围岩变形最小，巷道上侧的应力场范围宽。

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