奎屯市超采区不同压采方案下压采效果及影响预测  

Effect and Impact Prediction of Different Reducing Exploitation Schemes in Kuitun Overexploitation Area

作　　者：马瑞粮 吴彬[1,2] 高凡 杜明亮[1,2] MA Rui-liang;WU Bin;GAO Fan;DU Ming-liang(College of Hydraulic and Civil Engineering,Xinjiang Agricultural University,Urumqi 830052,China;Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disaster Prevention,Urumqi 830052,China)

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052 [2]新疆水利工程安全与水灾害防治重点实验室,新疆乌鲁木齐830052

出　　处：《水电能源科学》2022年第11期23-26,39,共5页Water Resources and Power

基　　金：新疆水利科技项目(XSKJ-2022-07)。

摘　　要：为研究不同压采方案对奎屯市超采区地下水位的影响,基于奎屯市2018~2021年地下水位实测数据,利用Modflow构建地下水流数值模型,设置三种压采方案,模拟监测井地下水位、地下水流场变化及各单元之间交换水量变化。结果表明,在现状地下水开采量2.27×10^(8)m^(3)/a的基础上,三种方案分别压采地下水0.91×10^(8)、1.34×10^(8)、1.76×10^(8)m^(3)/a,随着压采力度加大,超采治理效果明显,地下水修复效果与压采力度在一定范围内呈正相关,到2035年每压减0.43×10^(8)m^(3)/a,监测井地下水位平均降幅减少0.47 m/a,地下水等水位线上升7.05 m,降深减少0.27 m/a。周边地区地下水位与奎屯市地下水位接近同等幅度下降,研究区内部地方与新疆生产建设兵团属地地下水开采是造成地下水位下降的主要原因。In order to study the effect of different reducing exploitation schemes on the groundwater level in the Kuitun overexploitation area, based on the actual groundwater level measurement data of Kuitun City from 2018-2021, numerical model of groundwater flow was established using Modflow. Setting up three kinds of different groundwater reducing exploitation schemes, changes of groundwater level, groundwater flow field and exchange of water between units in typical monitoring wells were simulated. The results show that on the basis of the actual amount of current groundwater exploitation of 2.27×10^(8)m^(3)/a, groundwater reducing exploitation at the three schemes are 0.91×10^(8)m^(3)/a, 1.34×10^(8)m^(3)/a and 1.76×10^(8)m^(3)/a, respectively. With the increase of reducing exploitation, the effect of overexploitation control is obvious;The groundwater remediation effect is positively correlated with the reducing exploitation intensity within a certain range. By 2035, for every 0.43×10~8m~3/a of reducing exploitation, the groundwater level of monitoring wells will decrease by 0.47 m/a on average, the contour of groundwater level will increase by 7.05 m, and the drawdown will decrease by 0.27 m/a. Groundwater levels in the surrounding areas have fallen close to the same extent as those in Kuitun City;Local and Corps groundwater exploitation within the study area is the main reason for the decline in groundwater levels.

关 键 词：地下水超采 压采方案 水位变化 数值模拟 奎屯市 

分 类 号：TV211.12[水利工程—水文学及水资源]