Optimization Study of Reinforcing Scheme on Shaft Lining Shearing Failure
Based on the engineering background of shaft lining shearing failure caused by a fault of drop 7.2 m in near vertical direction at Xinyi Coal Mine in Henan province, which the failure had taken place for three times successively, the paper applied numerical simulated method to study the influence on shaft lining stress by fault and brought forward shaft lining reinforcing measures for shaft safety. The numerical simulation reinforcing plan main included that different concrete strength, different shaft lining thickness, one eighth part circle of shaft lining reinforced by mesh steel near fault and all shaft lining reinforced by mesh steel. The simulation results of comparatively kinds of reinforcing schemes show that adding the thickness of shaft lining, increasing concrete strength and setting different reinforcement measures can all effectively improve the horizontal bearing capacity of shaft lining, especially, adding the thickness of shaft lining. Optimized results show that the scheme of the shaft lining thickness is 450mm, concrete strength C40 and one eighth part circle of shaft lining reinforced by mesh steel near fault should be used in shaft lining construction at depth 410-460m and the scheme of the shaft lining thickness is 600mm, concrete strength C40 and mine steel bar should be used in shaft lining construction below depth 460m.
shaft lining reinforcing shearing failure numerical simulation optimization study
LIU Xiliang REN Lianwei ZHAO Chunxiao LIANG Weimin
School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China;Research Institute No.1 Department of Mine Construction of Pingdingshan Coal Industrial (Group) Co. Ltd., Pingdingshan
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
530-534
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）