A Study on Cumulative Effect of Production Blasting Vibration on Slope Failure in Xiaolongtan Coal Mine

With the gradual escalation of mining depth, the problems of deformation and destabilization of high and steep slopes became increasingly severe. The long-term repetitive blasting vibration had long-term cumulative damage effect on the slope stability of Xiaolongtan Open-pit Coal Mine, because it adopted blasting as the principal instrument to exploit rocks. Based on the long-term blasting vibration tests in Xiaolongtan Open-pit Coal Mine, this paper analyses the deformation rules of the creeping slope there under the action of long-term blasting seismic fluctuating load. It analyzes and demonstrates the existence of the cumulative effect of blasting vibration. In addition, it puts forwards that the deep will form sliding surfaces, the superficial place will form different sliding bodies and different regions of the slope will appear deformation under the cumulative effect of the long-term blasting vibration, namely, the damage effect and accelerative effect. The acceleration of the transition process from slowdown creeping flow to stable creeping flow will eventually lead to the formation of accelerative creeping flow, thus resulting in the damage of the slope.