ABSTRACT

In order to clarify the mechanism of deep hole high hydraulic fracturing, nonlinear dynamic theory, damage mechanics, elastic-plastic mechanics are used to analysis, the law of crack propagation and stress transfer under two deep hole hydraulic fracturing in tectonic stress areas is studied by the seepage-stress coupling models with RFPA simulation software. Moreover, the effects of rock burst control are tested by many means, either in stress field or in energy field. The research find that two deep hole hydraulic fracturing in tectonic stress areas, the direction of main crack propagation under shear-tensile stress parallel to greatest principal stress direction. The stress and energy cannot continuous propagation for the destruction of massive structure and the coal burst potential is weaken for moisture content increasing, it's both stress control and weaken mechanical property of coal seam mechanism for rock burst prevention and control in region.

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