敦煌盆地地下水位动态特征分析
Analysis of dynamic characteristics of groundwater level in Dunhuang Basin
梁丽霞1
作者信息
- 1. 甘肃省地质矿产勘查开发局水文地质工程地质勘察院,甘肃张掖 734000
- 折叠
摘要
以敦煌盆地平原区浅层地下水为研究对象,对研究区内的 79 眼地下水监测动态曲线分析.认为研究区地下潜水在自然和人为因素影响下,呈现出径流型、径流-开采型、开采型和蒸发型4 种动态特征.径流型地下水受疏勒河双塔水库和党河水库年内生态下泄水量的影响,径流-开采型地下水位受田间入渗和渠系入渗补给逐渐升高、大量而集中开采导致地下水位下降并局部产生漏斗,开采型地下水位受机井开采而大幅度下降并局部产生漏斗,蒸发型地下水位受气温升高和蒸发量增大而下降.
Abstract
Taking the shallow groundwater in the plain area of Dunhuang Basin as the research object,the dynamic moni-toring curve of groundwater in 79 holes in the study area was analyzed.It is believed that under the influence of natural and hu-man factors,there are four dynamic types of underground diving in the study area:runoff type,runoff-mining type,mining type and evaporation type.The runoff groundwater is affected by the annual ecological discharge of Shuangta Reservoir and Dan-ghe Reservoir,The runoff-mining groundwater level is gradually increased by field infiltration and canal system infiltration re-charge,and a large amount of concentrated mining leads to groundwater level decline and local funnels,while mining groundw-ater level is greatly reduced by mechanical well mining and local funnels occur.Evaporative groundwater level decreases with the increase of temperature and evaporation.
关键词
地下水/动态特征/敦煌盆地/浅水Key words
groundwater/dynamic characteristics/Dunhuang Basin/shoal water引用本文复制引用
出版年
2024
NETL
NSTL
万方数据