黄河上游支流昂思多沟地下水资源评价及开采潜力分析

The Evaluation of Groundwater Resources and Exploitable Potential in the Angsiduo Ditch of the Upper Reaches of the Yellow River

黄河流域青海段内重点城镇密集,人口分布集中,社会经济发展迅速,近年工程建设日益强烈,地下水资源需求迫切。本文以黄河上游支流昂思多沟(行政区划隶属于青海省海东市化隆县)为研究区,通过地质调查、水文地质钻探、抽水试验及样品测试等工作,圈定了地下水富水地段,采用排泄量总和法计算了昂思多沟地下水天然资源量,并对水质及可开采潜力做了深入评价。经计算,昂思多沟地下水天然资源量为41874.02 m3/d,可开采资源量13180.40 m3/d,矿化度0.415~0.451 g/L,Sr含量0.62~0.67 mg/L,质优量丰,可作为区内城镇及重点工程的后备、应急优质水源,意义重大;此外,该评价思路对黄河其他支流地下水资源评价提供参考。

The key towns were concentrated with population distribution and rapid economic development in the Qinghai section of the Yellow River Basin.In recent years,the engineering construction is increasingly intense,and the demand for groundwater resources is urgent.In this paper,Angsiduo Ditch in the upstream tributary of the Yellow River is taken as the research area,it's subordinated to Hualong County,Haidong City,Qinghai Province.Through geological survey,hydro-geological drilling,pumping test and sample test,the groundwater-rich area is delineated.The total discharge method is used to calculate the resources of groundwater in Angsiduo Ditch,and the groundwater quality and exploitable potential are evaluated.According to our calculation,the resources of groundwater are 41874.02 m3/d,the exploitable resources are 13180.40 m3/d,the degree of mineralization are 0.415~0.451 g/L,the content of Sr are 0.62~0.67 mg/L,owing to the high quality and the abundant quantity of the groundwater,it can be used as the backup and emergency water source for the towns and key projects in the area,which is tremendous.In addition,the evaluation idea can provide a reference for the evaluation of groundwater resources in other tributaries of the Yellow River.