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1 水文地质概况 首山漏斗区位于辽阳市区的西南部,总面积309.4km~2,是辽宁省大型地下水降落漏斗之一。 漏斗区所处的水文地质单元属太子河冲洪积扇,地势东高西低,地面坡降1/1500;区内的第四系含水层多为颗粒粗大的砾卵石层,厚度由东向西呈台阶状递增,在30～80m之间;含水层隔水底板由下更新统构成,主要岩性为泥包砾,顶板由弱透水的全新统冲积、冲洪积粉细砂、亚砂土构成,层厚5～11m。太子河、柳壕河和兵马河分别流经漏斗区,其中太子河多年(1975～1994年)平均流量58m~3/s,是区内地下水的主要补给源。
1 Overview of hydrogeology The first funnel is located in the southwestern part of Liaoyang City, with a total area of 309.4km ~ 2, which is one of the large groundwater descent funnels in Liaoning Province. Funnel zone where the hydrogeological unit is Prince Edward River alluvial fan, the terrain east and west low, the ground gradient 1/1500; Quaternary aquifer in the area mostly coarse gravel layer, the thickness of the east The west is stepped, increasing between 30 ~ 80m; aquifuge floor consists of the Lower Pleistocene, the main lithology mud mud gravel, the roof by the impermeable Holocene alluvial, alluvial silty sand, sand Soil composition, thickness 5 ~ 11m. Taizi River, Liutong River and Bingma River flow through the funnel area respectively. Among them, the average flow rate of Taizi River (1975-1994) is 58m ~ 3 / s, which is the main supply source of groundwater in the area.