Mining Underground Excavation Induced Systematic Study Of Pressure Hazard

The research on cataclysmic law of underground engineering excavating disasters is the basis of research on underground engineering excavating disasters. From analyzing the macroscopic failure characteristic of underground engineering excavating disasters, author cleared the main control factors or couple body of main control factors inducing underground engineering excavating disasters. With the cataclysmic law as key researching point, author established the system of underground engineering excavating disasters and provided the theoretical basis for critical hazard forecasting and adopting control disaster measures. The system of underground engineering excavating disasters with cataclysmic law, cataclysmic information monitoring and control disaster measures organically combined was primarily established in the thesis.The three basic types of disaster induced by underground engineering excavating as partial earth pressure disaster, earth surface depression and systematic earth pressure disaster were researched respectively and its researching forms system of disaster were also established in the thesis, for the purpose of engineering ,the engineering treatment method was viewed.In the thesis, the concept, definition and intension of systematic earth pressure disaster were advanced first time, and systematic earth pressure disaster happened in our country were divided into three types. Looking the kinetic energy releasing of main tremor due to falling-in and it's destruction as key researching point, author established the static-dynamic-static couple numerical calculation method and formula system of mine tremor due to falling-in. In the research on kinetic energy releasing of mine tremor due to falling-in, the influence to kinetic energy releasing of falling-in height, lithological characters and side collapse was quantitatively analyzed. Shattering and dilating coefficient of rock mass was introduced into the research on kinetic energy releasing of mine tremor due to falling-in and it was reflected in the calculative formulas ofkinetic energy releasing, the formula system of kinetic energy releasing of mine tremor due to falling-in more conforming with engineering reality was established in the thesis.