Abstract：Adequate quantification of dynamic impact risk is important to rockburst prevention on working faces. In this paper，an impact risk appraisal methodology was proposed based on the superimposition of stress increments caused by various impact risk factors on top of gravitational stresses. Such a technique allows a better quantitative assessment of the impact risk on working faces. The detailed procedure for applying the methodology was demonstrated by applying the method to stope working face 3-04，which is overlaid by buildings，water bodies and railways. The results from the example demonstrated that the method can quantify the variation of impact risk with the length of the stope working face. The assessment indicated that there were 3 severe，9 moderate，and 14 slight hazardous zones in the area，which is in line with actual observed rockburst situations. The case study clearly showed that the proposed approach is an effective impact risk appraisal method，as it is capable of providing a more quantitative assessment of the degree of impact risk on working faces compared with other existing techniques，such as the synthetic index method or the probability index method.
窦林名，何学秋. 冲击矿压防治理论与技术[M]. 徐州：中国矿业大学出版社，2001：124-133.(DOU Linming，HE Xueqiu. Theory and technology of rock burst prevention[M]. Xuzhou：China University of Mining and Technology Press，2001：124-133.(in Chinese))
<body>Your browse does not support frame!</body>
2015, Vol. 34 
