青海省大柴旦镇鱼卡河谷区地下水补给量计算评价.pdf

摘 要 鱼卡河谷松散岩类孔隙潜水是本次研究的主要对象，鱼卡河是地下水的补给源，由 于受南部绿梁山及东部大鱼山隆起，地下水向三岔口和大鱼山两个方向径流，最终排泄 于鱼卡河下游和大柴旦湖。 充分分析了鱼卡河谷区地形地貌、地质构造及水文地质条件，将研究区依据富水性 等级分成了3个富水区。 将鱼卡下站与鱼卡河中站建立相关关系，推出鱼卡河中站多年平均流量，采用基流 分割法分割出地下水泄出量，将鱼卡上站河水流量与河水入渗量的关系建立成数学表达 式，可还原出鱼卡出山口四十年（1956年－1995年）的地表径流数据。还原后的鱼卡河 出山口流量，计算得鱼卡河多年平均径流量为3.648m3/s。 以鱼卡冲洪积平原为一个水文地质单元充分分析地下水与地表水的补排关系，依据 野外工作取得的第一手资料，将各补排项定量化。 研究区采用断面径流量法，补给量总和法和补给量总和法相互映证，最终缺定补给 4 3 资源量为取枯水期所计算的断面径流量20.785×10 m /d。 关键词：青海省鱼卡河谷区 地下水 水文地质条件 地下水补给资源量 ABSTRACT Yuka valley diving is the main object of this study, Yuka river source is groundwater recharge, due to the southern Luliangshan mountain and eastern Dayu mountain uplift, groundwater flow in both directions to Crossroads and Dayu mountain ，eventually excreted to Yuka downstream and Dachaidan lake. Full analysis of the topography, geological structure and hydrogeological conditions of the Yuka Valley area, according to the study area rich in water level is divided into three water-rich area. Establish the Yuka downstation and the middlestation correlation，introduction of annual average flow Yuka middle station, split the escape of groundwater flow by using the base amount segmentation method, will build mathematical expressions on the relationship between river flows and Yuka river infiltration, you can restore the surface runoff about Yuka upstation flow in forty years (1956 - 1995) of data. Restored Yuka upstation flow, calculated Yuka river average annual runoff of 3.648m3 / s. Using runoff volume cross-section method, The sum of recharge method and excretion