Analysis on the Gate Roadway Surrounding Rock model and Stability

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外文摘要：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。

外文关键词：

structural mechanics modelnon-linearfracture line"stress ratio"

作者：

Zhi-jie Wen、Lian-jun Chen、Zhen-qi Song、Chuan Zhang、Shan-chao Hu

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作者单位：

Key Laboratory of Mine Disaster Prevention and Control,Shandong University of Science and Technology,Qingdao,Shandong,China

会议名称：

International symposium on risk control and managment of design, construction and operation in underground engineering;IRCM' 09

会议地点：

Dalian(CN);Dalian(CN)

会议母体文献：

Proceedings of 2009 international symposium on risk control and managment of design, construction and operation in underground engineering

页码：

p.22-25

出版时间：

2009