陕西省斗门水库是陕西省引汉济渭输配水工程的重要组成部分,为研究斗门水库建设对区域地下水动态的影响,以期为斗门水库后期建设以及区域水资源管理提供相关科学依据,通过建立斗门水库试验段气象—地下水监测系统,运用M-K趋势分析法分析研究区地下水位动态特征,选用变异系数法分析地下水位的时空间变异特征,采用灰色关联度法揭示其主导影响因子。结果表明：斗门水库试验段地下水位整体表现为上升趋势且明显的丰枯特征,升幅约为0.5—2m/a；试验段渗漏量与地下水位变化呈负相关关系,渗漏对地下水位的影响存在一定空间差异,即对东部地下水位的影响大于西部。西部地下水位的主导影响因子为降雨量,东部地下水位的主导影响因子为渗漏量和降雨量。

Doumen reservoir is an important part of water transmission and distribution project in shaanxi province,In order to study the impact of Doumen Reservoir construction on regional groundwater dynamics, it is expected to provide relevant scientific basis for the later construction of Doumen Reservoir and regional water resources management. Through the establishment of the Meteorological-Groundwater Monitoring System of the Doumen Reservoir test section, the dynamic characteristics of the groundwater level in the study area were analyzed by Mann–Kendall test ,The time-variation characteristics of the groundwater level were analyzed by the coefficient of variation method, and the dominant influence factors were revealed by the grey correlation method. The results show that the overall performance of the groundwater level in the test section of Doumen Reservoir is an upward trend and obvious abundance, with an increase of about 0.5-2 m/a. The leakage of the test section is negatively correlated with the change of groundwater level. The leakage is related to the groundwater level. There is a certain spatial difference in the impact, that is, the impact on the water table in the east is greater than that in the west. The dominant influencing factor for the groundwater level in the west is rainfall, and the dominant influencing factors for the groundwater level in the east are leakage and rainfall.

P641

陕西水利科技项目(2018slkj-10)