朱仙庄煤矿塌陷水域水文地球化学特征及污染评价

Hydrochemistry Characteristics and Pollution Evolution In Zhuxianzhuang Subsidence Ponds

摘要:

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+,Ca2+,Mg2+,Cl-,SO2-4,HCO-3)及重金属离子（Cd2+,Cr3+,Mn2+,Pb2+）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HCO3-Na型； IV塘HCO3-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。

Abstract:

Environmental problems caused by mine subsidence has become increasingly apparent, especially water environment problems happened in collapse mine have directly affect the use of water resources. By determing the content of major ions(K+,Na+,Ca2+,Mg2+,Cl-,SO2-4, HCO-3) and heavy metals（Cd2+,Cr3+,Mn2+,Pb2+）, hydro-geochemical characteristics of subsidence ponds have been analyzed. Evaluation of water quality has been carried out by using single factor evaluation method and the Nemerow comprehensive pollution index method. It is showed that hydrochemical types of the subside pool can be subdivided into the following types: Ⅰ,Ⅱand Ⅲ pond are HCO3-Na type, while Ⅳ pond is HCO3-Ca type. The concentrations of heavy metal ions are fitted categories Ⅱ in "Environmental quality standards for surface water" (GB3838-2002). The results of single factor evaluation method and the Nemerow comprehensive pollution index showed that the quality of subsidence pond water is good and has no pollution.