深部岩体非线性力学能量作用原理与应用

A NONLINEAR MECHANICAL ENERGY THEORY IN DEEP ROCK MASS ENGINEERING AND ITS APPLICATION

以物体高速撞击局部效应与冲击能量因子密切关系为启迪,首次提出深地下围岩"一高二扰动"等效平均振动能量原理及其表达式,根据深部岩体准共振和摆型波现象出现的量纲一能量条件,深入阐释该条件的物理基础并定义之为地冲击能量因子。论文推导了深部围岩岩爆、分区破裂时空构造与地冲击能量因子的关系;根据地冲击能量因子发生动力灾变的阈值,结合地下大规模爆炸地冲击运动的传播规律,界定了防护工程安全埋置深度。研究表明:地冲击能量因子为探明深部岩体力学复杂静动力学现象与工程响应关键机制开辟了新的研究途径。

Based on the relationship of the local failure and impact energy factor on the high-speed impact,a theory of energy equivalence and its formulation for average vibration of deep rock mass disturbed by excavation or explosion were first proposed. The physical foundation of the non-dimensional energy condition that quasi-resonance and pendulum-type waves occurred was interpreted and defined as the ground shock energy factor. The conditions of occurrence for the engineering disasters such as the rock burst and the zonal disintegration were derived using this theory. In addition,the safety depth of protective engineering was defined with the theory combined with the propagation of underground blasting waves. The research showed that the ground shock energy factor revealed a new way for understanding the complex mechanism of the static and dynamic phenomenon for deep rock mass.