摘要
布哈河为青海湖流域最大的支流,其径流量达入湖流量的80%。为了维系青海湖流域生态地质环境的良性发展,需要科学提出布哈河流域的地下水可开采资源量。本次研究在开展流域水文地质调查的基础上,首先建立研究区的水文地质概念模型和地下水流数值模型,利用统测和长期观测数据对水流模型进行校正,通过Groundwater Vistas软件预测不同径流条件下拟建水源地的地下水水位降深及各项水资源量变化情况。预测结果表明在流域上中下游分别设置开采量为5万m^(3)/d、10万m^(3)/d、15万m^(3)/d的三处集中式水源地,连续30年平均径流条件下拟建水源地的最大降深为17.99 m,之后再经过5年枯水期水源地最大降深为20.26 m,地下水资源开采量主要来自于泉水及河流的隐伏排泄量的减少。最后结合流域规划提出布哈河地下水可开采资源量为30万m^(3)/d。
The Buha River is the largest tributary of the Qinghai Lake basin,and its runoff reaches 80%of the lake inflow.To ensure sustainable development of the ecological and geological environment in the Qinghai Lake Basin,it is necessary to exploit groundwater resources scientifically in the Buha River Basin.This study discussed the hydrogeological conditions of the Buha river,and establish the river basin mode concept,set up the numerical simulation based on Groundwater Vistas.Using the measured ground flow field to correct the identification model,the prediction results show that the maximum drop depth of the planned water source is 17.99 m(based on the average runoff for 30 years)in the basin with the water source of 50,000 m^(3)/d,100,000 m^(3)/d and 150,000 m^(3)/d;and after 5 years of dry season,the maximum drop depth of water source is 20.26 m.The groundwater resource exploitation mainly comes from the reduction of hidden excretion of springs and rivers.Finally,according to the watershed planning,the exploitable groundwater resources of Buha River is 300,000 m^(3)/d.
作者
彭红明
王占巍
罗银飞
袁有靖
王万平
PENG Hongming;WANG Zhanwei;LUO Yinfei;YUAN Youjin;WANG Wanping(Bureau of Qinghai Environmental Geological Prospecting,Xining,Qinghai 810007,China;Key Laboratory of Geological Environment of Qinghai Province,Xining,Qinghai 810007,China;Qinghai Provincial Geological Survey Bureau,Xining,Qinghai 810007,China;Hydrogeological and Environmental Geological Survey Center of China Geological Survey,Baoding,Hebei 071051,China)
出处
《现代地质》
CAS
CSCD
北大核心
2023年第4期943-953,共11页
Geoscience
基金
中国地质调查局“柴达木盆地循环经济试验区1∶5万水文地质调查”项目(1212011140132)
青海省环境地质重点实验室专项青海东部岩溶水资源研究项目(2021-kj-05)。
