石羊河流域地下水盆地分区划分研究  

Study on Division of Groundwater Basin in Shiyang River Basin

作　　者：方良斌[1] FANG Liang-bin(Shiyang River Basin Administration of Gansu Provincial Water Resources Department,Wuwei,Gansu,733000)

机构地区：[1]甘肃省水利厅石羊河流域管理局,甘肃武威733000

出　　处：《地下水》2018年第5期9-11,共3页Ground water

基　　金：中央分成水资源费项目(126301001000160012)

摘　　要：石羊河流域属严重缺水的内陆河地区,流域水资源开发利用严重超过其承载能力,部分区域地下水利用达到174%,致使流域地下水位快速下降,天然植被枯萎死亡,土地沙漠化、盐渍化进程加快,生态十分脆弱,严重危及居民生存。本文基于流域地质结构和水文地质状况,按照地质结构、地下径流特性,对流域地下水盆地进行分区划定,并对流域水资源量进行计算评价,结果表明:石羊河流域地下水主要划分为大靖地下水盆地、武威地下水盆地、永昌地下水盆地、民勤地下水盆地、昌宁地下水盆地和潮水东地下水盆地,经流域地下切面计算和抽水试验验证,区内地下水降水入渗补给量为0.937亿m^3/a,侧向径流补给量为0.086亿m^3/a,合计地下水天然补给量为1.023亿m^3/a。相对误差为0.033亿m^3/a,绝对误差3.23%,分析较为准确,地下水盆地分区合理。研究结果为流域地下开采与保护提供了科学支撑。The Shiyang River Basin is an inland river area with severe water shortage. The development and utilization of water resources in the basin seriously exceeds its carrying capacity. The groundwater utilization in some areas reaches 174 %,causing the groundwater level in the basin to drop rapidly,the natural vegetation to wither and die,and the desertification of the land. The salinization process is accelerating and the ecology is very fragile,seriously endangering the survival of residents. Based on the geological structure and hydrogeological conditions of the basin,according to the geological structure and the characteristics of underground runoff,the basin groundwater basin is demarcated and the water resources of the basin are calculated and evaluated. The results show that the groundwater in the Shiyang River Basin is mainly divided into Dajing. The groundwater basin,the Wuwei groundwater basin,the Yongchang groundwater basin,the Minqin groundwater basin,the Changning groundwater basin and the Chaoshuidong groundwater basin have been verified by the underground section of the basin and the pumping test. The recharge of groundwater infiltration in the area is 0. 937 billion m^3/a. The lateral runoff recharge is 0. 086 billion m^3/a,and the total natural groundwater recharge is 102. 3 million m^3/a. The relative error is 0. 033 billion m^3/a,the absolute error is 3. 23 %,the analysis is more accurate,and the groundwater basin is reasonable. The research results provide scientific support for underground mining and protection in the basin.

关 键 词：石羊河 地层岩性 水文地质 地下水盆地 划分 

分 类 号：P641.8[天文地球—地质矿产勘探]