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[1]刘怀付,张振全,刘万荣,等.考虑峰后软化的圆形巷道稳定性分析及工程应用[J].中国安全生产科学技术,2017,13(10):150-157.[doi:10.11731/j.issn.1673-193x.2017.10.025]
　LIU Huaifu,ZHANG Zhenquan,LIU Wanrong,et al.Stability analysis and engineering application of circular roadway considering post-peak softening[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(10):150-157.[doi:10.11731/j.issn.1673-193x.2017.10.025]
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考虑峰后软化的圆形巷道稳定性分析及工程应用
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
13
期数:
2017年10期
页码:
150-157
栏目:
现代职业安全卫生管理与技术
出版日期:
2017-10-30

文章信息/Info

Title:
Stability analysis and engineering application of circular roadway considering post-peak softening
文章编号:
1673-193X(2017)-10-0150-08
作者:
刘怀付1; 2; 张振全3; 刘万荣1; 2; 马海峰1; 2
(1. 安徽理工大学 深部煤矿采动响应与灾害防控重点实验室，安徽 淮南 232001；2. 安徽理工大学 能源与安全学院，安徽 淮南 232001；3．中国矿业大学（北京） 资源与安全工程学院，北京 100083)
Author(s):
LIU Huaifu1; 2;  ZHANG Zhenquan3;  LIU Wanrong1; 2;  MA Haifeng1; 2
(1. Key Laboratory of Deep Coal Mine Excavation Response & Disaster Prevention and Control, Anhui University of Science and Technology, Huainan Anhui 232001, China; 2. School of Mining and Safety Engineering, Anhui University of Science and Technology, Hu
关键词:
圆形巷道; 统一强度理论; 中间主应力; 内摩擦角软化系数; 黏聚力软化系数
Keywords:
circular roadway;  unified strength theory;  intermediate principal stress;  internal friction angle softening coefficient;  cohesion softening coefficient
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2017.10.025
文献标志码:
A
摘要:
为获得更准确的巷道围岩应力分布和变形特征，基于统一强度理论，考虑围岩塑性软化和中间主应力的影响，引入塑性软化参数，推导出巷道围岩弹塑性区应力、塑性区范围和位移的表达式。通过算例分析，得到塑性软化系数和中间主应力等相关参数对巷道围岩应力分布、塑性区半径和位移的影响规律。研究结果表明：随内摩擦角软化系数和黏聚力软化系数的增大，围岩塑性区半径和位移呈现先急剧后缓慢的减小趋势；中间主应力系数对巷道围岩弹塑性应力有着显著影响，中间主应力系数越大，围岩塑性区半径和位移越小。
Abstract:
In order to obtain the stress distribution and deformation characteristics of the roadway surrounding rock more accurately, based on the unified strength theory, the expressions of the elastic-plastic zone stress, plastic zone range and displacement of the roadway surrounding rock were deduced by considering the surrounding rock plastic softening and the intermediate principal stress, with introducing into the plastic softening parameter. The influence laws of the relevant parameters, such as the plastic softening coefficient and the intermediate principal stress, on the stress distribution, the radius and displacement of plastic zone in roadway surrounding rock were concluded through the example analysis. The results showed that the radius and displacement of plastic zone in surrounding rock presented a decreasing trend being sharp first and then slow with the increase of the internal friction angle softening coefficient and the cohesion softening coefficient. The intermediate principal stress coefficient had a significant influence on the elastic-plastic stress of the roadway surrounding rock, the greater the intermediate principal stress coefficient, the smaller the radius and displacement of plastic zone in surrounding rock. The correctness of the analytical solution was verified by comparing the numerical simulation results with the field measurement data. The research results can provide a certain theoretical basis for the supporting design and stability analysis of the roadway surrounding rock.

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　ZHANG He,SUN Zhen ping,XU Xian sheng.Calculation for surrounding rock resistant coefficient of circle tunnel under the action of seepage[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2012,8(10):27.
[2]彭瑞,孟祥瑞,赵光明.考虑中间主应力对圆形巷道Hoek Brown准则解的影响[J].中国安全生产科学技术,2014,10(1):11.[doi:10.11731/j.issn.1673-193x.2014.01.002]
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备注/Memo

备注/Memo:
安徽省高校自然科学研究项目重点项目(KJ2017 A093)
更新日期/Last Update: 2017-11-03