Numerical Simulation On The Development Regularity Between Tectonic Environment And Mining Subsidence

Based on the "structure control disaster" theory as the foundation, through the establishment ofthe relevant physical and mechanical model, numerical simulation research on Numerical Simulationof development rules of the mining subsidence and tectonic environments of different types, tectonicenvironment of mining subsidence, providing technical support for the disaster prediction of miningsubsidence.The elements of tectonic environment is a different effect on mining subsidence, tectonicmedium as basic material and tectonic environments, directly affects the deformation and failure ofrock mass characteristics; tectonic stress as the power source of the tectonic movement, affects thedeformation process of formation; tectonic boundaries and structure as the tectonic form of forceacting on the structure medium, control the direction of coal mining induced subsidence. Therefore,construction of different environmental factors on mining subsidence "contribution" is different, in thedevelopment process of mining subsidence, can never ignore a tectonic environment factors.Because of the difference of mining subsidence in different tectonic environments, mine tectonicenvironment type is usually more than one, will become the necessary basic work of tectonicenvironment classification. By studying on the classification of typical coal mining area in NorthernShaanxi tectonic environment, by the method of numerical simulation, analysis of deformation andfailure process of overlying strata and surface air, coal mining subsidence rules summarized underdifferent tectonic conditions, for the effective prevention and control of coal mining subsidencedisaster to provide geological basis.The same tectonic environment types, mining the different terrains, deformation and failure formof mining subsidence also exists difference. In general, repeated mining of coal mining subsidence arefar greater than the initial mining, coal mining subsidence are mountainous terrain conditions differsignificantly from the ground conditions. In the following chapters will address the repeated miningand complex topographic conditions "hard continuous media interface near the level of self weightstress type" tectonic environment simulation test of coal mining subsidence, are analyzed for the integrity and practicality of the theory.Finally, based on the fully mechanized working face40108big Buddhist temple as the researchobject, based on field investigation, analysis of the repeated mining development characteristics ofsurface crack conditions, deformation and damage process of rock, repeated mining environment andtectonic dynamic conditions of Coal Mining Subsidence Analysis of a process, and provide atheoretical basis for safety production and building area of protection.