涪陵焦石镇页岩气开发区地下水质量评价  

Groundwater Quality Evaluation in Shale Gas Development Zone,Jiaoshi Town,Fuling

作　　者：吉盼盼 孙建平[2] 朱继良[2] JI Panpan;SUN Jianping;ZHU Jiliang(School of Water Resources&Environment,Hebei GEO University,Shijiazhuang,050031,China;Institute of Hydrogeology and Engineering Geology Techniques CGS,Baoding 071051,China)

机构地区：[1]河北地质大学水资源与环境学院,河北石家庄050031 [2]中国地质调查局水文地质环境地质调查中心,河北保定071051

出　　处：《安全与环境工程》2018年第2期107-114,共8页Safety and Environmental Engineering

基　　金：中国地质调查局项目(12120113010800;DD20160253);国家自然科学基金项目(41372332)

摘　　要：页岩气开发存在潜在污染源,在开采、运输、处理及处置不当的情况下,会对页岩气井场附近地下水造成污染。因此需要对页岩气开发区地下水质量进行评价,以确保用水安全。以涪陵焦石镇页岩气开发区一带为研究区,利用研究区内的地下水调查资料,采用单因子指数法对比分析了污染来源,并利用模糊数学法对该页岩气开发区浅层地下水质量进行了综合评价。结果表明:研究区浅层地下水中仅硬度和浊度2项评价因子超标,其他评价因子均达标,浅层地下水点未受到深部钻井液及钻屑、返排液等高矿化度液体及甲烷气体的污染;研究区浅层地下水质量总体较好,所取水样达到《地下水水质标准》(Ⅰ~Ⅲ类)的占96.23%,两个岩溶水点因井漏受到污染,不建议作为饮用水点。The research area is located in the shale gas development zone in Jiaoshi Town of Fuling County which is a typical karst area.All sampling points are shallow groundwater points mostly used for domestic water use.There are potential sources of pollution for shale gas development and pollution of nearby groundwater in the event of exploitation,transport,handling and disposal.Based on the survey data of groundwater in the study area,this paper evaluates the groundwater quality via the single gene index method and the fuzzy mathematical method to ensure the security of groundwater.The research analyzes the pollution sources via the single gene index method,and evaluates the groundwater quality comprehensively via the fuzzy mathematical method.The results show that all factors reach GradeⅢstandard for groundwater quality except hardness and turbidity.Our samples have not been contaminated by deep drilling fluid and clastic,flow-back fluid and produced water,and extraction methane gas.The quality of groundwater in the study area is generally good,and 96.23%of our samples reach GradeⅢstandard for groundwater quality.Two underground karst water spots are polluted by oil leakage from equipment,or shallow drilling fluid,or the mud for plugging during the shale gas production which are not recommended to be local drinking water supplying spots.Other groundwater spots can basically meet different local demands.

关 键 词：页岩气开发区 地下水质量评价 单因子指数法 模糊数学法 涪陵焦石镇 

分 类 号：X824[环境科学与工程—环境工程] TE38[石油与天然气工程—油气田开发工程]