摘要
为了揭示出巷道围岩在应力场结构中的稳定性准则,根据对基于主应力迹线的应力场结构及其破坏规律进行分析,得出巷道在应力场中保证稳定性的总原则为通过调整巷道的支护参数,使应力场中优势主应力迹线远离“分岔”的状态。以李子垭南二井3103运输巷为工程背景,通过数值模拟的方法,从应力场结构稳定性的角度对巷道支护效果进行分析。结果表明,稳定性准则可以对巷道支护效果进行有效分析与指导,并为以后在巷道支护问题的研究中提供新的思路。
In order to reveal the stability criterion of roadway surrounding rock in the stress field structure,according to the analysis of the stress field structure and its failure law based on the principal stress trace,it is concluded that the general principle to ensure the stability of roadway in the stress field is to keep the dominant principal stress trace away from the state of"bifurcation"by adjusting the roadway supporting parameters.Taking the 3103 transportation roadway of Liziya South No.2 well as the engineering background,the roadway supporting effect is analyzed from the perspective of structural stability of stress field through numerical simulation.The results show that the stability criterion can effectively analyze and guide the roadway supporting effect,and provide new ideas for the research of roadway supporting in the future.
作者
肖乔
金洪伟
邓华易
孙臣
徐东
Xiao Qiao;Jin Hongwei;Deng Huayi;Sun Chen;Xu Dong(China Coal Technology & Engineering Group Chongqing Research Institute,Chongqing 400037,China;Institute of Safety Science and Engineering,Xi′an University of Mining and Technology,Xi′an 710054,China;School of Mines,China University of Mine and Technology,Xuzhou 221116,China)
出处
《能源与环保》
2022年第1期299-304,共6页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
“十三五”国家重点研发计划重点专项(2018YFC0808001)。
关键词
主应力迹线
应力场
退化点
巷道支护
拓扑
principal stress trajectories
stress field
degenerate point
roadway supporting
topology
