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系统分析了三峡井网8口井水位对汶川8.0级地震的同震响应及其后效特征,揭示出这些特征因井而异,其差异性在井孔结构相似的条件下主要取决于井点的构造部位、观测含水层的地下水埋藏类型、含水层的导水系数等条件;深入研究了井水位同震后效特征中残留阶升与阶降的力学含义及其地震预测意义,并用仙女山断裂带上近期地震活动验证了残留阶升区可能是未来地震危险区的科学推论.
This paper systematically analyzes the coseismic response of the 8 wells in the Three Gorges well pattern to the Wenchuan M8.0 earthquake and the characteristics of their after-effects, revealing that these features vary with well and their differences depend mainly on well points under the similar well structure The groundwater burial types of aquifers and the water conductivity coefficient of aquifers were investigated. The mechanical implication and earthquake prediction significance of the residual steps and descents in the post-cogging characteristics of well water level were studied in depth. The recent seismic activity on the fault zone validates the scientific corollary of the residual step-up zone that may be the future seismic hazard zone.