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水库诱发地震经常威胁着水库大坝的安全,酿成远比地震的直接破坏更加严重的次生灾难,因此对地震水库诱发地震应予充分重视。从水库地震能量积聚和诱发因素两个方面对水库地震的形成机理进行分析。根据摩尔-库仑破裂准则,利用库区应力摩尔圆的移动和半径的变化以及岩石破裂线的变动,分析了水库在不同断裂类型区域的诱震机制。
Reservoir-induced earthquakes often threaten the safety of reservoir dams, resulting in more serious secondary disasters than the direct damage caused by earthquakes, so attention should be paid to the earthquake-induced reservoir. The formation mechanism of reservoir earthquakes is analyzed from two aspects of earthquake energy accumulation and induced factors. According to the Mohr-Coulomb failure criterion, the mechanism of the seismogenic mechanism of reservoirs in different fault types is analyzed by using the movement and radius of the stress-molar circle in the reservoir area and the variation of the rock fracture line.