【作者】 姚梅；

【导师】 陶月赞；

【作者基本信息】 合肥工业大学 ， 市政工程， 2007， 硕士

【摘要】 本文根据区域水文地质条件、环境地质问题及开发利用现状，对淮北西半区孔隙承压水盆地进行地下水限采规划。研究区的孔隙承压水在开采过程中，含水层之间的粘性土层将因为固结而产生“压密释水”，这也是产生地面沉降的原因；由于粘性土层(固结层)中的渗流不一定是Darcy流(Biot流固耦合理论也难以直接应用)，这样条件下的地下水流系统的模拟，目前尚未见有比较理想的计算方法。研究过程中，在对区域地质与水文地质条件进行概化的基础上，建立研究区水文地质概念模型；根据对阜阳市地面沉降的研究，建立有关粘土层固结形成“压密释水量”与含水层水量之间交换的关系，并建立研究区地下水流系统的数学模型；以Modflow计算软件为基础上，进行相应的二次开发，用以求解上述数学模型。将1997年1月水位分布状态作为模型的初始流场，将1997年1月至1999年12月的有关测验数据用于模型识别，将2000年1月至2005年12月的有关测验数据用于模型检验，计算步长都为一个月；利用识别与检验后的模型，评价了研究区现状水平年(2005年)孔隙承压水资源的组成。根据研究区现状水平年孔隙承压水资源量组成的评价结果，按照《超采导则》中的超采系数法有关规定，评价研究区现状水平年(2005年)的地下水开采状态，在此基础上提出地下水限采的技术方案；为了便于限采技术方案的实施与管理，基于Mapgis建立研究区的点、面信息属性库管理系统。更多还原

【Abstract】 Based on the hydrogeological conditions, environmental problems and actual groundwater exploitation, a pumping-limit scheme is proposed for controlling groundwater over-draft in confined groundwater aquifer of Huaibei Plain, Anhui Province. During the exploitation of the confined water, consolidation-water will release from the clay layer which between aquifers and the ground subsidence will happen due to clay layer consolidation. Up to now, simulation on the groundwater system subject to above hydrogeological conditions is difficulty for that seepage in clay layer may non-Darcy flow.Hydrogeological conceptual model is established based on the generalizability of hydrogeological and regional geological conditions. Relationship of water exchange between aquifers storage and consolidation-water is established according to the research result on ground subsidence in Fuyang City. Then, a mathematical model on groundwater flow system is set up. At last, the corresponding second development basing on the Modflow software is impoldered to solve the mathematical model. Taking the water level in July, 1997 as the initial head, all of correlative data from January in 1997 to December in 1999 are used for model identifying, the data from January in2000 to December in 2005 are used for model testing, and the calculation step is one month. Groundwater resources in 2005 is evaluated by the model mentioned above.In accordance with overdraft coefficient from the "Overdraft Guide", overdraft degree in the research area in 2005 is evaluated, and the pumping-limit scheme is put forwarded . Based on Mapgis, the property database for editing point and area is established in order to manage skilled project conveniently.更多还原