岩石超声特性与加载应力关系及在深部开采中面临的挑战
Relationships between rock ultrasonic properties with loading stresses and challenges in deep mining
王培涛 1马驰 2蔡美峰2
作者信息
- 1. Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing,Beijing 100083,China;State Key Laboratory of Water Resource Protection and Utilization in Coal Mining,CHN Energy Shendong Coal Group Co.,Ltd.,Beijing 102201,China;National Institute of Clean-and-Low-Carbon Energy,Beijing 100011,China
- 2. Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing,Beijing 100083,China
- 折叠
摘要
地应力测量是矿山进入深部采矿后需要开展的一项重要工作,高效的地应力测量方法对于确定围岩的稳定性具有重要意义.岩石的超声特性是其物理力学性质、宏细观结构及受力状态等因素的综合体现,以波速为关键参数的声学信息与围岩的应力状态、变形、细观结构、实验条件等因素具有显著的关联性.以众多专家学者研究成果为基础,从波速-应力-应变关联性,考虑岩性、孔隙结构等内在因素影响,以及围压、温度等外界因素影响,波速数学模型四方面介绍了岩石声学特性的研究现状,提出了应力作用下考虑温度因素影响的应力-温度耦合波速关系方程,最后结合深部开采发展需求提出了关于岩石声学-应力研究发展的建议方向.
Abstract
In-situ stress measurement is a key task in deep underground mining activities.An efficient stress measurement technique is important for determining the safety of the surrounding rock mass.Rock acoustic characteristics can comprehensively reflect rock physical and mechanical properties,structures,and in-situ stresses.Acoustic information,with the wave velocity as a key parameter,is significantly correlated with factors such as stress,deformation,microstructure,and environmental conditions.Recent studies and developments regarding rock acoustic properties were summarized based on numerous research results in regard to four aspects:the wave velocity-stress-strain correlation,the influence of intrinsic factors such as lithology and pore structure,the influence of external factors such as confining pressure and temperature,and theoretical wave velocity models.Equations for the coupled stress-temperature-wave velocity relationship considering the effect of temperature under stress were presented.Finally,suggested research directions for future advances in rock acoustics and in-situ stress measurement for the development of deep mining engineering were described.
关键词
岩石力学/声学特性/波速/地应力测量/深部采矿Key words
rock mechanics/acoustoelasticity/wave velocity/in-situ stress measurement/deep mining引用本文复制引用
基金项目
National Key R&D Program of China(2021YFC2900500)
National Natural Science Foundation of China(52074020)
Open Fund of State Key Laboratory of Water Resource Protection and Utilization in Coal Mining,China(WPUKFJJ2019-06)
he Interdisciplinary Research Project for Young Teachers of USTB(FRF-IDRY-21-001)
出版年
2023
NETL
NSTL
维普
万方数据