江苏省锡山市西部地区地下水资源计算模型研究

从地下水运动均衡原理的角度分析江苏省锡山市西部地区第Ⅱ承压含水层天然和现状开采条件下的地下水均衡要素.揭示了该区地下水开采与地面沉降的关系,其中现状开采条件下的75%～80%的开采量来自于粘性土层的压密水量.根据地面沉降的发生机理剖析地面沉降严重发育地区忽略地面沉降影响因子建立的地下水资源计算模型中存在的问题针对存在的问题,提出了地下水可开采资源合理的计算方法,并对融有地面沉降影响因子的地下水资源计算模型的可实现性进行了分析.

MODEL STUDYING OF GROUNDWATER RESOURCE COMPUTING FOR WEST PART OF XISHAN DISTRICT, JIANGSU PROVINCE

According to the theory of groundwater kinematical regime and the analysis of groundwater isostatic essence under the conditions of natural and current mining of the confined aquifer II in the west part of Xishan district, Jiangsu Province, it is revealed that about 75% to 80% of the mining groundwater comes from the pressed and released groundwater in clay band. The relationship between groundwater exploitation and ground subsidence is discussed. Based on the genetic mechanism of ground subsidence, this paper represents that an existent problem for the computing model of groundwater resources was to ignore the influent factor of ground subsidence related obviously to the groundwater mining. To solve the problem, the paper is putting forward a more reasonable computing method about groundwater exploitable resources, and analyzing the feasibility of computing model for calculating groundwater resources which considers the factor of ground subsidence.