地下水广泛分布在地壳岩体中,由于它存在的普遍性、流动性与难以压缩性,所以当其深埋地下,处于完全封闭条件时,它所承受的附加应力必然反馈于围岩,在其薄弱部位造成劈进,加速岩体裂隙的形成、扩展、串通,断裂的解锁,蠕动与错动。因此,不少孕震模式都把地下水的活动做为孕震过程中的重要因素。当其处于半开启条件时,含水岩体所承受的附加应力,通过有效应力和孔隙压的调正,一方面使含水岩体变形,同时也引起了水位的升降 Groundwater is widely distributed in the crustal rock mass. Because of its universality, fluidity and uncompressibility, groundwater is bound to be completely enclosed when it is buried underground and inevitably fed back to the surrounding rock. Weak parts caused by split, accelerate the formation of rock cracks, expansion, collusion, the unlocking of the fracture, peristalsis and misplaced. Therefore, a lot of seismogenic modes all take the activity of groundwater as an important factor in the seismogenic process. When it is in the semi-open condition, the additional stress that the water-bearing rock mass will bear, through the adjustment of effective stress and pore pressure, will deform the water-bearing rock mass on the one hand and cause the water level to rise and fall