Slope Stability Analysis Of Deep-Hole Blasting Open-Pit Mine Vibration Effect

Follow the development of mining enterprises, the production mechanization of open-pit mine becomes the mainstream development trend in the mass production ara.In order to satisfy the requirement of production mechanization, deep hole blasting is widely used at mine’s production.The deep hole blasting satisfy the requirement of production, at the same time, it’s damage is looming large, for example, surrounding’s side slope, architecture and so on.The stability of side slope inside at mining area not only influence the unobstructed transportation, schedule of excavation, safety of productive equipment in daily production, even will threaten the safety of company staffs life and property. Thus, the research about the influence on the deep hole blasting about side slope stability of deep hole blasting is necessary.The blasting and production of an open-pit mine limestone mine in FuSui is used for a study background in this paper. First, the influence of intrinsic factor and extrinsic factor for the stability of side slope are analyzed, and the mechanism for generating the blasting vibration and its transmission characteristics are discussed in detail. According to the recorded data which are gotten from monitoring the blasting in the spot, the transmission rules in the blasting vibration were further explored by using the Sadov’s Vibration Formula in regression analysis of the measured value. Then, the stability-safe factor of side slope which is under the blasting vibration load action is calculated by pseudo static method; the calculation results gotten by the different slice method are analyzed and summarized. Last, Based on the static elastic plasticity theory, the stability-safe factor of side slope which is under the blasting vibration load action is calculated in strength reduction via a finite element software, COMSOL, and the stress-strain of side slope which is under the vibration load of blasting is simulated. The conclusion of stable and safe condition which is under the vibration load of blasting is analyzed and summarized by different analytical approach.