Abstract
Combined with the engineering geological conditions and the goaf occurrence of Hongyanhe Reservoir in Binzhou City, the distribution characteristics of the fissure zone in the edge of goaf were explored by field test. The influence of mining fissure on reservoir seepage were evaluated on the basis of analyzing the influence of mining fissure on rock mass integrity and seepage. The evaluation results show that the maximum leakage caused by goaf is 1004.41m3/d, which accounts for 0.87% of the designed annual runoff. As time goes on, the goaf will gradually become stable, and the leakage will decrease little by little over time. In view of the impact on coal mine production safety, it is suggested to strengthen monitoring and early warning.
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