论地下水资源的永久性消耗量

发布时间：2018-06-18 20:23

本文选题：永久性消耗 + 地下水资源　；参考：《水利学报》2014年12期

【摘要】：针对传统的水文地质学中地下水资源被定义为可逐年得到恢复的地下淡水量,本文通过分析含水层系统的组成特点、含水层和弱透水层的释水特征,揭示了地下水资源的永久性消耗机理。结合苏锡常地区近30年内大规模开采地下水资源过程中地下水位变化以及地面沉降的实测数据,研究了地下水被大量抽取后含水层系统的永久性压缩。含水层系统的释水变形直接导致了永久性的地面沉降和地下水储存空间的缩减,原本储存在含水层系统中的部分地下水资源将无法得到恢复储存,无法恢复的这部分地下水资源其实已被永久性地消耗了。永久性消耗的地下水资源总量与地面沉降的总体积基本一致,结合苏锡常地区含水层系统常年开采后引起的地面沉降量估算,得出永久性消耗的地下水累计量约占该区域地下水开采总量的41.8%~65.8%。
[Abstract]:In view of the fact that groundwater resources in traditional hydrogeology are defined as groundwater fresh water which can be recovered year by year, this paper analyzes the characteristics of aquifer system and the characteristics of water release from aquifer and weak permeable layer. The permanent consumption mechanism of groundwater resources is revealed. Based on the measured data of groundwater level change and ground subsidence during large-scale exploitation of groundwater resources in Suxi-Changzhou area in recent 30 years, the permanent compression of groundwater in aquifer system after a large amount of groundwater extraction is studied. The water release deformation of aquifer systems leads directly to permanent land subsidence and the reduction of groundwater storage space, and some of the groundwater resources originally stored in aquifer systems will not be restored to storage, This part of the groundwater that cannot be restored has been consumed permanently. The total amount of groundwater resources permanently consumed is basically consistent with the total volume of land subsidence, and combined with the estimation of the ground subsidence caused by the annual exploitation of the aquifer system in Suxi-Chang area, It is concluded that the accumulative amount of groundwater consumed permanently accounts for 41.8% of the total groundwater exploitation in this area.
【作者单位】：河海大学地球科学与工程学院;
【基金】：国家自然科学基金资助项目(41172204) 水利部公益性行业项目(201301083)
【分类号】：P641.8

【参考文献】