杨柳街矿区地下水水化学特征及矿井涌水来源分析  

Hydrochemical Characteristics of Groundwater and the Source Analysis of the Mining Water in Yangliu Street Mine

作　　者：洪涛[1] 马祖陆[1] 欧梦梦 覃星铭[1] 杨丽超[2] 程瑞瑞[1] 

机构地区：[1]中国地质科学院岩溶地质研究所岩溶生态系统与石漠化治理重点实验室,广西桂林541004 [2]联合国教科文组织国际岩溶研究中心,广西桂林541004

出　　处：《工业安全与环保》2017年第7期83-88,共6页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金青年科学基金(41502257);国家重点研发计划课题(2016YFC0502402)

摘　　要：杨柳街矿区随意排放的酸性废水对当地生态环境带来严重破坏,为查明矿区地下水水化学特征及矿井出水的来源,系统采集了20个水样。综合运用Piper三线图、相关性分析、离子比值法和系统聚类对常规水化学组分进行了分析。结果表明:煤系地层含硫矿物的氧化作用是矿井酸性废水形成的主要原因;岩溶区碳酸盐岩的溶解作用是形成低总溶解性固体的HCO_3型地下水的主要水文地球化学过程;煤系砂岩水和岩溶水在石炭系含水层发生了混合作用,对茶园水库构成潜在威胁。矿井渗水的直接补给来源为煤系基岩含水层和上覆泥质灰岩含水层,间接来源为地表河水入渗,潜在来源为西部岩溶含水层沿断层补给。Uncontrolled discharging of acidic wastewater in Yangliu Street Mine has resulted in serious breakage to the local ecosystem environment. In order to find out the hydro chemical characteristic and resources of the mine water,twenty water samples are collected. The hydrochemistry characteristics are systemically analyzed based on Piper diagram,correlation matrices,ionic ratios and the system cluster methods. The results indicate that oxidation of sulfides in coal measure strata is the main cause for the high-salinity acidic wastewater of the mine,dissolution of carbonatite is the major hydrogeochemical production for the low-salinity groundwater which is HCO3 type in karst area and the mixing process between sandstone groundwater in coal measures and karst water in Carboniferous aquifer poses a potential threat to the Cha-yuan reservoir. Groundwater in coal measure aquifer and upper silty limestone aquifer is the direct source of replenishment for water bursting,the surface water infiltration is the indirect source and groundwater in western karst aquifer may also flow into the coal measure aquifer along the fault.

关 键 词：污染 水文地球化学 相关系数 聚类分析 

分 类 号：P641.3[天文地球—地质矿产勘探] X751[天文地球—地质学]