岩体中慢速变形波的产生和传播演化规律研究

观测和实验表明，从实验室岩石试件尺度，直到地球板块尺度上都存在慢速变形波。这种慢速变形波在地球板块尺度上能够触发各种能量级别的地震, 在岩石工程尺度上可以诱发岩爆等动力现象。但是目前对于这种慢速变形波产生的物理力学条件、在岩体中传播的微细观力学机制和演化规律、这种慢速变形波的物理力学模型的建立还没有得到解决。因精力所限，本项目将集中研究实验室岩石试件尺度上和岩石工程尺度上慢速变形波的上述问题。拟考虑岩体的结构层次，利用固体力学、固体物理学等学科的基础理论，结合实验研究和数值模拟等方法进行研究，揭示慢速变形波的产生物理力学条件、传播的物理机理、演化规律和对于形成岩体变形破坏临界状态的影响，建立基于固体力学、固体物理的慢速变形波的物理力学模型，因此本研究具有重要的基础意义。同时对于地震、岩石工程岩爆等动力事件的预测和深地下工程合理支护具有重要的实践意义。因此，本项目具有前沿性、基础性、实用性。

Experiments and in-situ observations showed that deformation wave is very common in rock mass in wide range of scales from lab sample scale up to continental scale. This kind of slow deformation wave may trigger earthquakes of different energy scales at continental scale level, and rock-bursts in geotechnical engineering scale level. But up to now, the physico-mechanical conditions of initiation, micro-meso-mechanism of the propagation and evolution, and the physical-mechanical modeling of this kind of slow deformation wave are still open. This project is concerned with the aforementioned problems of deformation wave at lab sample scale and geotechnical scale. We will consider the structural hierarchy of rock mass, use fundamental theories of solid mechanics and solid physics, together with experimental and numerical methods, to study the above mentioned problems, in order to reveal the occurrence conditions, mechanism of propagation and evolution of slow deformation wave, and its effect on formation of critical state of deformation and fracture of rock mass, and to develop physic-mechanical model of slow deformation wave. Therefore, this project has profound fundamental meaning. Also it has practical meaning for prediction of earthquakes, rock-bursts, and for rational supporting of deep-level underground engineering. Therefore, this project has fundamentality, practicability and frontier nature.