摘要
介绍了应力解除法的基本原理、测试步骤及计算过程,采用实验室测得的弹性模量、泊松比及现场应力解除获得的三维膨胀变形数据,由线性虎克定律即可计算出应力解除前岩体中应力的大小和方向。以济宁煤田安居煤矿为例,获得3个测点的最大主应力、中间主应力及最小主应力的大小、方向、倾角,总结了安居煤矿井底车场附近的原岩应力分布规律。
Basic principles,test steps and calculation process of the stress relief method have been introduced in this paper.By using elastic modulus and Poisson’s ratio measured in the laboratory and three-dimensional expansion and deformation data obtained by the field stress relief,the magnitude and direction of the stress in the rock mass before the stress is released can be calculated by linear Hooke’s law.Taking Anju coal mine in Jining coalfield as an example,the magnitude,direction and inclination of the maximum principal stress,intermediate principal stress and minimum principal stress of the three measuring points can be obtained,and the stress distribution law of the original rock near the underground depot of Anju coal mine has been summarized.
作者
牛志力
孟燕
郑元忠
马晓东
周长祥
舒磊
NIU Zhili;MENG Yan;ZHENG Yuanzhong;MA Xiaodong;ZHOU Changxiang;SHU Lei(Shandong Institute of Geological Sciences, Key Laboratory of Gold Mineralization Processes and Resources Utilization Subordinated to the Ministry of Natural Resources, Shandong Key Laboratory of Geological Processes and Resource Utilization in Metallic Minerals, Shandong Ji'nan 250013, China;Shandong Brigade of Geological Exploration Center of China Building Materials Industry ,Shandong Ji'nan 250100,China;Ji'nan Baker Mine Engineering Technology Service Limited Corporation, Shandong Ji'nan 250031, China)
出处
《山东国土资源》
2021年第6期66-71,共6页
Shandong Land and Resources
基金
国家重点研发计划课题(编号:2016YFC0600606)
山东省重点研发计划(编号:2017CXGC1601)资助。
关键词
应力解除法
弹性模量
泊松比
最大水平应力
Stress relief method
elastic modulus
Poisson's ratio
maximum horizontal stress
