摘要
深部岩体具有独特的自应力块系等级构造特性,摆型波(μ波)现象是深部块系岩体特有的动力特征科学现象之一,集中反映了深部块系岩体非协调、非连续的动力学特性.摆型波是一种不同于传统纵波和横波的新型非线性弹性低频低速变位波,可以直接引发深部岩体岩爆和冲击地压等地质灾害,且无法用经典连续介质力学圆满解释.本文介绍了国内外对摆型波现象的实验和理论研究进展,归纳出摆型波的主要特征参数及其变化规律,并指出该领域的重点研究方向.
Deep rock mass has the unique ＂self-stressed＂ block-hierarchical structure, in which pendulumtype wave phenomenon is one of the typical dynamic characteristic phenomena, reflecting the incompatible and discontinuous dynamic properties of the deep block rock mass. Pendulum-type wave is a new type nonlinear and elastic reversal wave propagating with low frequency and low velocity, which is quite different from the longitudinal or transverse waves. Pendulum-type wave could lead to rock burst, bump of earth pressure and other severe geological hazards occurring in deep rock mass, and could not be well explained by the classical continuum mechanics. In this paper, the state of arts of the experimental and theoretical studies on pendulumtype waves in home and abroad is firstly presented, and the main characteristic parameters of pendulum-type waves and their variation laws are then summarized. Finally, the focusses and development trends in the studies on pendulum-type waves are suggested.
出处
《力学进展》
EI
CSCD
北大核心
2008年第5期601-609,共9页
Advances in Mechanics
基金
国家杰出青年科学基金(50525825)
国家自然科学基金重大项目(50490275)资助~~
关键词
深部块系岩体
摆型波
低频低速变位波
块系等级结构
地质力学不变量
deep block rock mass, pendulum-type wave, low-frequency, low-velocity reversal wave, block- hierarchical structure, geo-mechanical invariant
