Study of instability mechanism and control of roadway regenerated roof in random joint rock

被引：0
|
作者：
Wang T. [1 ]
Ma W. [1 ]
Qu K. [1 ]
机构：
[1] College of Mining and Safety Engineering, State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, 266590, Shandong
来源：
Caikuang yu Anquan Gongcheng Xuebao/Journal of Mining and Safety Engineering | 2016年 / 33卷 / 02期
关键词：
Instability mechanism; Random joint rock; Regenerated roof; Roadway excavation;
D O I：
10.13545/j.cnki.jmse.2016.02.012
中图分类号：
学科分类号：
摘要：
To study the instability mechanism and control method of roadway regenerated roof in random joint rock, a random joint simulation program has been written to build a random joint numerical roadway model through FISH language embedded in UDEC software, combined with the Monte-Carlo simulation method and based on statistical result of joint parameters in an excavation roadway of Beizao coal mine. The stability failure process and support form of roadway regenerated roof has been simulated in the model, and the numerical simulation result has been tested by engineering application. The research has shown that some small rock blocks in the support roof are easy to slide and to be caved, then key rock block slides down along the joint interface, and when one end of key rock block is separated from the roadway wall, the whole roof loses its stability and begins to collapse. The proper roadway support form under regenerated roof is the combination of cable anchor and shield support, which can control the roof deformation and prevent the caving of broken small rock blocks. © 2016, China University of Mining and Technology. All right reserved.
引用
收藏
页码：265 / 270
页数：5
相关论文
共 11 条
  • [1] Chen J., 3-D network numerical modeling technique for random discontinuities of rock mass, Chinese Journal of Geotechnical Engineering, 23, 4, pp. 397-402, (2001)
  • [2] Zhang L., Yang Q., Study on reinforcement effect of initial spray in rock cavern of highway based on Monte-Carlo stochastic joint, Highway, 6, pp. 232-237, (2013)
  • [3] Jia C., Wang Z., Zhu W., Program for joint network simulation and its application to dynamic response analysis of underground caverns, Rock and Soil Mechanics, 32, 9, pp. 2867-2872, (2011)
  • [4] Yang C., Xu G., Shen Y., Et al., Joint network simulation based reliability analysis for jointed rock slopes, Journal of Engineering Geology, 22, 6, pp. 1221-1226, (2014)
  • [5] Du P., Liu J., Han Z., Et al., Stability analysis of high rock slope based on meticulous description of complex structure, Rock and Soil Mechanics, 34, pp. 393-398, (2013)
  • [6] Cui Z., Leng X., Zhu Z., Et al., Structure effects of random joint network rock mass on seismic response of underground caverns, Rock and Soil Mechanics, 35, pp. 645-652, (2014)
  • [7] Ping Y., Wang Z., Li S., Et al., Water seal effect evaluation of underground crude oil storage caverns around rock mass with random joints, Rock and Soil Mechanics, 35, 3, pp. 811-819, (2014)
  • [8] Yang X., Yang Z., Gao Q., Et al., Block size prediction of rock masses based on joint network simulation and fractal theory, Journal of Taiyuan University of Technology, 46, 3, pp. 318-322, (2015)
  • [9] Wu J., Cui Z., Sheng Q., Et al., Application of jointed finite element method on stability analysis of underground caverns, Water Power, 38, 6, pp. 16-19, (2012)
  • [10] Ren W., Cui W., Zhang A., Et al., Application study of underground storage cavern stability analysis based on distinct element method, Chinese Journal of Underground Space and Engineering, 9, pp. 1916-1921, (2013)
12