ADVANCES IN THE STUDY ON PENDULUM-TYPE WAVE PHENOMENON IN THE DEEP BLOCK ROCK MASS
-
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($\mu$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.Abstract: Deep rock mass has theunique "self-stressed" block-hierarchical structure, in whichpendulum-type wave phenomenon is one of the typical dynamiccharacteristic phenomena, reflecting the incompatible anddiscontinuous dynamic properties of the deep block rock mass.Pendulum-type wave is a new type nonlinear and elastic reversalwave propagating with low frequency and low velocity, which isquite different from the longitudinal or transverse waves.Pendulum-type wave could lead to rock burst, bump of earthpressure and other severe geological hazards occurring in deeprock mass, and could not be well explained by the classicalcontinuum mechanics. In this paper, the state of arts of theexperimental and theoretical studies on pendulum-type waves inhome and abroad is firstly presented, and the main characteristicparameters of pendulum-type waves and their variation laws arethen summarized. Finally, the focusses and development trends inthe studies on pendulum-type waves are suggested.
点击查看大图
计量
- 文章访问数: 2094
- HTML全文浏览量: 86
- PDF下载量: 1500
- 被引次数: 0