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为了解工作面冲击危险状态,提前采取防冲措施,降低后期防治强度,理论分析了集中静载荷与冲击地压发生的相关性,建立了基于集中静载荷探测的冲击危险性预评价模型,并开展了实践验证。结果表明:集中静载荷在冲击地压启动过程中起主导作用,并可在工作面开采前探测并卸载;区域性集中静载荷可通过地震波法探测得出,基于地震波参数建立的冲击危险性预评价模型能够对工作面危险性做出评价,并且能够指导预卸压工作实施和检验解危效果。
In order to understand the impact danger status of working face and take precautionary measures in advance to reduce the intensity of later prevention and treatment, the correlation between concentrated static load and rock burst was theoretically analyzed and a pre-evaluation model of impact risk based on concentrated static load detection was established. Carry out practical verification. The results show that the concentrated static load plays a leading role in the process of rockburst and can be detected and unloaded before working face mining. The regional static load can be detected by seismic wave method. The impact hazard established based on seismic wave parameters The evaluation model can evaluate the danger of the working face, and can guide the pre-stress relief work to implement and test the risk-relief effect.