摘要
岩爆是高地应力环境条件下一种常见的地质灾害,对施工人员安全存在着极大的威胁。为对某超深竖井围岩岩爆倾向性做出预测,以单轴压缩试验得到的力学参数为前提,引入基于损伤的岩爆应力解析解,从应力、岩性、能量储放条件三方面对岩爆倾向性做出分析,并通过损伤力学理论解释岩爆倾向性。结果表明,该竖井围岩无岩爆倾向性,结合实验所得到的应力-应变曲线以及损伤演化方程,岩石的破坏属于稳定破坏,岩体储能能力极差,不满足岩爆发生的条件。
Rockburst is a common geological disaster under high geostress environment,which poses a great threat to construction personnel safety.In order to predict the rockburst tendency of surrounding rock of an ultra-deep shaft,based on the mechanical parameters obtained by uniaxial compression test,the analytical solution of rockburst stress based on damage is introduced,and the rockburst tendency is analyzed from three aspects of stress,lithology and energy storage conditions,and the rockburst tendency is explained by the damage mechanics theory.The results show that the surrounding rock of the shaft has no rockburst tendency.Combined with the stress-strain curve obtained from the experiment and the damage evolution equation,the failure of the rock belongs to stable failure,and the energy storage capacity of the rock mass is very poor,which does not meet the conditions of rockburst.
作者
OCHILOV ABDURASUL
侯克鹏
袁明礼
虞云林
朱志岗
OCHILOV ABDURASUL;HOU Kepeng;YUAN Mingli;YU Yunlin;ZHU Zhigang(School of Land and Resources Engineering,Kunming University of Science and Technology;Yunnan Provincial Key Laboratory of China-Germany Blue Mine and Special Underground Space Development and Utilization;Yunnan Yarong Technology Co.,Ltd.)
出处
《现代矿业》
CAS
2022年第2期229-232,236,共5页
Modern Mining
关键词
单轴压缩试验
应力解析
岩爆倾向性
损伤演化
uniaxial compression test
stress analysis
rockburst proneness
damage evolution
