摘要
应用围岩-断层模型，按突变理论，分析了断层冲击地压的相关影响因素，并对断层冲击地乐的震级进行了预测。断层冲击地压是由于开采活动引起的断层突然相对错动、弹性应变能迅速释放的动力现象。其特点是释放能量多、震级高、破坏程度较大，应进行重点防治，以避免人员伤亡，减少重大损失。断层冲击地压的震级随断层厚度增大而减小，随断层软化指数增大而增加，随断层初始剪切弹性模量增大而增加，随同岩的初始剪切弹性模量增大而减小。结果表明，应用突变理论对断层错动型冲击地压所做的解析分析结果与实际情况基本相符。
The interrelated parameters of fault rockburst are analyzed according to the surrounding rock-fault model and the fold catastrophe. The magnitudes of fault rockburst are forecasted. The fault rockburst is a dynamic phenomenon due to mining activities leading to the fault dislocation abruptly and the elastic strain energy release rapidly. The more the energy releases, the higher the magnitude is, and the graver the destructiveness is. So, the prevention and cure must be emphasized to avoid personnel casualties and to decrease grave loss. Its magnitude increases with the increasing of initial shear modulus and soften index of fault, and decreases with the increasing of the fault＇s thickness and initial shear modulus of surrounding rock. The results show that the analysis of fault rockburst based on fold catastrophe theory is consonant with actual case.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第A01期5206-5210,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金重大项目（50490275）
关键词
采矿工程
断层
冲击地压
震级
突变理论
mining engineering
fault
rockburst
magnitude
fold catastrophe
