ERT在晋祠泉复流工程地下水勘查中的应用

Application of ERT in Groundwater Exploration of Jinci Spring Reflow Project

晋祠泉具有重要的人文及社会价值,晋祠泉复流对山西省生态文明建设意义重大。通过地表水源置换地下水,在适宜地点修坝蓄水,抬升水位,可加大晋祠泉域入渗补给,促进晋祠泉早日复流。结合前期地质调查结果,在主要渗漏段布设4条高密度电法ERT(Electricity Resistivity Tomography)测线,在研究主要渗漏段的分布特征、渗漏性能及工程适宜性等方面均取得了一系列成果与认识,为开展地表水补给地下水工程选址提供了科学依据。结合数值模拟结果,认为龙尾头L2测线处,即古交市与娄烦县交界,靠近龙尾头村处地层具有良好的垂向及侧向渗透性,且该处地势开阔,地形条件良好,是较适宜的建坝地点。

The reflow of Jinci spring with important cultural and social values is of great significance to the construction of ecological civilization in Shanxi Province.Replacing groundwater with surface water source,building barrage at suitable location to store water and raise the water level can increase the infiltration and recharge of Jinci spring and advance the reflow of Jinci spring.It is very important to determine the best site for dam construction and identify the relevant hydrogeological characteristics in shallow effectively with electricity resistivity tomography.Based on the previous geological survey results,four electricity resistivity tomography survey lines are laid in the main leakage section,and a series of results have been achieved,which can offer reference for the site selection of surface water recharge groundwater project.Based on the numerical simulation results,this paper concludes that the formation at L2 survey line of Longweitou has good vertical and lateral permeability,and it is more suitable for dam construction.