GMS在长江三角洲(长江以南)深层地下水资源评价中的应用

Application of GMS Software to the Evaluation of Groundwater in Deep Aquifers of Yangtze Delta (South of Yangtze River)

长江三角洲地区地下水的过量开采已引起地裂缝、地面沉降等地质灾害 ,严重制约了该区社会经济的可持续发展。必须加强地下水资源的管理 ,其基础和前提是对该区地下水资源量进行调查和评价。由于长江三角洲面积大 ,含水层系统结构复杂 ,所以准确评价该区的地下水资源是一项十分困难的工作。本文采用GMS ,实现了对该区长江以南深层地下水的三维数值模拟。应用过程及模拟结果表明GMS具有操作简便、三维可视效果好、前后处理能力强等突出优点 ,即便用于长江三角洲如此大范围、条件复杂、实际工作量非常大地区的地下水数值模拟 ,仍可以达到较高的精度要求。

Geological hazards such as ground fractures and subsidence in the area of Yangtze Delta are induced by the excessive exploitation of groundwater,which influences the continuous development of the economy in the area.The management of the groundwater resources should be stressed,and the base for the management is to investigate and evaluate the groundwater quantity in the area.Owing to the large area and the complex aquifer structure,it is difficult to evaluate correctly the groundwater resources in the area.GMS software is used to carry out the three-dimensional simulation for the deep aquifer to the south of the Yangtze Delta.The results show that the GMS software has the advantages such as convenience for operation,good visual effect and strong functions for pre-processing and post processing.The simulation results are ideal to the said complex area.