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本文首先对1987年冬春在吉辽蒙交界地区出现的大面积地下涌水现象进行了分析。认为:该区因1986年秋季大量集中降雨,使浅层地下水极度饱和,冬季上层冻结暂时变成隔水层,同时给下层以巨大的冻胀负荷压力成为承压状态,当温度稍高时,在薄弱部位形成岛状融化,下层水夺路而出,造成涌水现象,此现象随冻土层的消融而消失。其次,通过吉林省及辽吉蒙地区15口井,对区域地下水动态进行分析,特别对蛟河井水位趋势下降和四平井水位趋势上升进行重点解剖、认为该区井水位基本处于正常动态阶段,与区域构造活动关系不大。
This article first analyzes the phenomenon of large-scale underground gushing in the winter and spring of 1987 in Jiao-liao-Meng border area. It is concluded that the shallow groundwater is extremely saturated in the autumn of 1986 due to heavy rainfall in autumn of 1986, the freezing in the upper layer of winter temporarily becomes the aquitard, and at the same time, the lower layer is under pressure with huge load of frost heaving. When the temperature is slightly higher, In the weak parts of the formation of island melt, the lower water out of the way, resulting in gushing water phenomenon, this phenomenon disappears with the permafrost ablation. Secondly, based on the analysis of 15 groundwater wells in Jilin Province and Liao Jimon region, the paper analyzes the dynamic of groundwater in the area, especially focusing on the decline of water level tendency in Jiaohe well and the rising trend of Siping Well water level. The well water level in this area is basically in the normal dynamic stage, Regional tectonic activity has little to do.