【摘要】 在分析研究区水文地质条件的基础上,基于水量平衡基本原理,本文应用FEFLOW建立了研究区地下水系统水流模型。利用观测井地下水位动态观测资料,对模型进行了识别并运用识别后的模型模拟了研究区在P=50%、75%、95%三种不同降水和径流保证率条件下的地下水系统水资源量的构成及变化。模拟结果表明:酒泉盆地地下水系统水资源长期处于负均衡状态,地下水位呈持续下降状态。因此提出,盆地内水利工程的建设及布局应考虑增加对地下水资源的有效补给,缓解地下水位的持续下降,以促进盆地内地下水资源的可持续开发。更多还原

【Abstract】 Based on the analysis of hydrogeological conditions and the balance of water quantity in the study area,using FEFLOW software which was created based on the finite element theory,the flow model of the Jiuquan basin is built and the flow model created with the observed groundwater level in the wells is calibrated.The construction and changes of the groundwater system are simulated and analyzed at the different precipitation and runoff of P=50%,75%,95% respectively.The results indicate that the groundwater system is at the negative balanced stage at most conditions,and the groundwater level declines continuously.In order to effectively prevent the groundwater level declining and promote the sustainable development of groundwater resource,the effective recharge to the groundwater system should take into account in the construction of water conservancy engineering.更多还原