鞍山-海城地区地震地下水地球化学研究     

仵柯田  崔月菊  孙凤霞  杜建国 《中国地震》2019,35(4):629-642

通过测量辽宁省鞍山-海城地区地震重点监测区地下水离子浓度和氢、氧同位素组成，讨论了该区地下水化学类型的时空变化及其成因。测量结果表明，取样点水温变化范围为11.0～97.0℃，水样的总固溶物（TDS）在197.89～829.99mg/L之间，水样分为8种化学类型。大部分水样的δD、δ¹⁸O值均沿中国东北地区大气降水线分布，少数有所偏离，表明该区的地下水主要接受大气降水的补给，并可能有深部水的供给。研究区Ca-HCO₃和Ca·Mg-HCO₃型水主要是岩石风化溶解和阳离子交换作用的结果；Ca-HCO₃·Cl和Ca·Na-Cl·SO₄型水主要受岩石风化溶解、阳离子交换作用、深部卤水混入或人类活动影响；Ca-HCO₃·SO₄和Ca-SO₄·HCO₃型水与岩石风化溶解以及深部流体混入有关；Na-SO₄·HCO₃和Na-HCO₃·SO₄型水主要是深部来源水体的混入造成的。采样期间研究区发生2次M_L≥3.0地震，采样点在地震发生月份出现了明显的离子浓度异常变化；Na⁺、Mg²⁺、Ca²⁺、Cl^-和SO₄^2-浓度变化明显，对地震活动响应较灵敏。  相似文献   

朱仙庄煤矿塌陷水域水文地球化学特征及污染评价          下载免费PDF全文

陈蜜蜜  任加国  程琛  陈光旭 《山东国土资源》2016,32(11)

煤矿塌陷导致的环境问题日益显现,尤其是塌陷水域的水环境问题直接影响到矿区水资源利用。通过对朱仙庄塌陷塘常规离子(K~+,Na~+,Ca~(2+),Mg~(2+),Cl~-,SO_4~(2-),HCO_3~-)及重金属离子(Cd~(2+),Cr~(3+),Mn~(2+),Pb~(2+))的测定来分析塌陷塘水文化学特征,并利用单因子评价法、内梅罗指数法对水域重金属离子做出污染评价。结果表明,塌陷塘水化学类型为:I,II,III塘均为HCO_3-Na型;IV塘HCO_3-Ca型。重金属含量均符合《地表水环境质量标准》(GB3838—2002)II类水质标准。单因子评价法与内梅罗指数法评价结果显示,塌陷塘水质良好,基本无污染。  相似文献   

Hydro-geochemical evaluation of groundwater with studies on water quality index and suitability for drinking in Sagardari,Jashore          下载免费PDF全文

Ahmed Mohammad Tofayal  Monir Minhaj Uddin  Hasan Md Yeasir  Rahman Md Mominur  Rifat Md Shamiul Islam  Islam Md Naim  Khan Abu Shamim  Rahman Md Mizanur  Islam Md Shajidul 《地下水科学与工程》2020,8(3):259-273

Sagardari union is facing groundwater crisis because of contaminations from agriculture and urban sewage, which bring a considerable change in water quality. In view of this, hydro-chemical analyses were undertaken on 35 groundwater samples and the following hydro-geochemical parameters, pH, total dissolved solids (TDS), total hardness (TH), electrical conductivity (EC), cations and anions, were analyzed. From the analytical results, it is found that pH value was lower than WHO drinking water standard and the middle-downstream portions of the investigation region show higher EC. The piper plot indicates that the groundwater in Sagardari falls in the categories of NaClHCO₃ hydro-chemical facies. Higher TH in groundwater was detected, but still in an acceptable range. In addition, salinity and arsenic ratio are higher and moderately higher, respectively. The spatial distribution of Groundwater Quality Index (GWQI) was determined by geo-statistical modelling of Sagardari union. The study provides information and supports the administration which to make better groundwater utilization and quality control in the Sagardari union.  相似文献   

中酸性岩浆岩地区水文地球化学组分映震能力初探   总被引：2，自引：2，他引：0  

廖丽霞  黄可琴  黄声明  陈琳 《地震》2002,22(4):42-48

讨论了水文地球化学组分的映震能力与岩石矿物成分的关系, 并从化学的角度分析了水文地球化学组分在孕震过程中可能发生的各种变化, 力图揭示发生水文地球化学前兆异常的内在因素, 为地震水化学前兆异常提供内在的理论依据。  相似文献