滨海平原持续开采浅层地下水的环境效应:漳州市宫口半岛群孔抽水试验  

Environmental effects of continuous mining from phreatic aquifers in coastal plain areas:a group drilling pumping test in Gongkou peninsula,Zhangzhou city

作　　者：伍成成 郭欣 林积泉 高增文 郑西来[4] WU Chengcheng;GUO Xin;LIN Jiquan;GAO Zenwen;ZHENG Xilai(Hainan Provincial Monitoring Centre for Ecological Environment,Haikou 571126,China;Xiamen Institute of Geological Engineering in Fujian province,Xiamen 361008,China;College of Environmental Science and Engineering,Qingdao University,Qingdao 266071,China;College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]海南省生态环境监测中心,海南海口571126 [2]福建省厦门地质工程勘察院,福建厦门361008 [3]青岛大学环境科学与工程学院院,山东青岛266071 [4]中国海洋大学环境科学与工程学院,山东青岛266100

出　　处：《海洋湖沼通报》2023年第5期91-97,共7页Transactions of Oceanology and Limnology

基　　金：福建省地质矿产勘查开发局公益性地质调查项目(20152202)。

摘　　要：群孔抽水试验是查明不同含水层水力联系、评价地下水资源量、模拟地下水实际开采能力的有效技术手段之一。本文选取漳州市宫口半岛南部风海积平原的蔬菜连片种植区为研究对象,利用群孔持续性抽水试验模拟开采地下水时水位和水质的变化规律。结果表明持续性抽水形成水位负值区,群孔抽水时各抽水孔相互干扰,钻孔单位降深涌水量均有下降,降幅13.0%~31.2%。四个抽水孔L5K2-E、L5K2-S、L5K2-W和L5K2-N氯离子浓度分别升高了163.65、93.94、37.77和126.65 mg/L;矿化度分别升高了266.30、65.34、76.44和313.70 mg/L。持续性抽水降落漏斗范围不断扩大,周边地下水不断向抽水孔迁移,引起了显著的环境负面效应。研究结果可为当地合理开发利用地下水资源、保护生态环境提供参考。Group drilling pumping test is one of the effective technical means to find out hydraulic connection of different aquifers,to evaluate quantity of groundwater resources and to simulate actual exploitation ability.This paper simulated the change law of groundwater level and water quality using sustained group drilling pumping test through choosing a typical vegetable cultivated zone in the coastal plain area of Gongkou peninsula,Zhangzhou city.The results showed that the pumping test area formed a water level negative values zone.Each pumping hole produced mutual interference during group drilling pumping test.Unit water inflow of each pumping hole had decrease with a variation range from 13.0%to 31.2%.The chloride concentration of four pumping holes,which was L5K2-E,L5K2-S,L5K2-W and L5K2-N,rised by 163.65,93.94,37.77 and 126.65 mg/L.Meanwhile,the mineralization degree of the four pumping holes rose by 266.30,65.34,76.44 and 313.70 mg/L.Along with the continuous pumping,the range of groundwater depression cone was expanding constantly.The peripheral groundwater transferred to pumping holes constantly.Therefore,this test produced significant environmental negative effect.The experimental results could provide some references for rational utilization of groundwater resources,local ecological environment protection and drinking water supply virtuous circle in rural area.

关 键 词：环境效应 潜水含水层 群孔抽水试验 滨海平原 宫口半岛 

分 类 号：P641[天文地球—地质矿产勘探]