| 引用本文: | 刘 基,高 敏,王强民,等.呼伦贝尔煤电基地地下水化学特征及其影响因素[J].灌溉排水学报,2019,38(12):78-84. |
| ,et al.呼伦贝尔煤电基地地下水化学特征及其影响因素[J].灌溉排水学报,2019,38(12):78-84. |
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| 摘要: |
| 【目的】查清呼伦贝尔煤电基地的水资源质量。【方法】现场采集和收集了81件地下水（其中潜水42件，承压水39件）化学样品进行水质检测。通过描述性统计分析、溶解性总固体（TDS）的分布以及水化学类型的分析，进行研究区的地下水水化学特征研究；通过离子交换和岩石溶滤以及蒸发浓缩分析了其影响因素，最后根据熵权-密切值法评价了地下水的水质情况。【结果】研究区潜水和承压水均属于碱性水，平均硬度值分别为254.81 mg/L和208.22 mg/L，阳离子均以Na+、Ca2+为主，阴离子以HCO3－、Cl－为主；TDS均为高平原向平原及河谷区逐渐变低，且超过1 000 mg/L的区域基本位于高平原上；潜水含水层的水化学类型主要为Ca?Na-HCO3以及Ca?Na?Mg-HCO3，承压含水层的水化学类型主要为Na-HCO3-Cl以及Na-Ca-Mg-HCO3。【结论】地下水中Na+是通过含水介质中的Na+与地下水中的Ca2+和Mg2+交换而得到，水化学特征主要受含钠和钙硅酸盐的溶滤作用影响，采矿活动对其影响基本可忽略，农田灌溉对地下水中NH4+和NO2-有一定的影响。潜水和承压水的水质普遍较差，在河谷区和平原区下地下水水质较好。相关研究成果旨在为呼伦贝尔煤电基地水资源规划和优化配置提供一定的参考价值。 |
| 关键词: 煤电基地；水资源；水化学特征；影响因素；水质评价 |
| DOI：10.13522/j.cnki.ggps.2019218 |
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| Hydrochemical Characteristics and Their Influencing Factors of Groundwater in Hulunbuir Coal-electricity Base |
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LIU Ji，GAO Min，WANG Qiangmin，YANG Jian，ZHAO Chunhu
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1. China Coal Research Institute, Beijing 100013, China； 2. Xi’an Research Institute of China Coal Technology & Engineering Group Corp， Xi’an 710054, China; 3. Key Laboratory of Coal Mine Water Hazard Prevention and Control Technology in Shaanxi Province，Xi’an 710077, China; 4. Zhongsheng Environmental Technology Development Co, Ltd., Xi’an 710065, China
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| Abstract: |
| 【Objective】The purpose of this paper is to understand the water quality of Hulunbuir coal - electricity base. 【Method】 81 groundwater samples (of which 42 samples were phreatic water and 39 samples were confined water) were collected for water quality testing. Based on this, descriptive statistics analysis, total dissolved solids (TDS) distribution and hydrochemical type analysis were carried out to study groundwater chemical characteristics in the study area. The analysis of the influencing factors were conducted through the analysis of ion exchange, rock dissolution and evaporation concentration. Finally, the water quality of the groundwater was assessed. 【Result】The result showed that the phreatic water and confined water in the study area belonged to alkaline water with average hardness of 254.81 mg/L and 208.22 mg/L, respectively, cations were mainly Na+ and Ca2+, anion mainly HCO-3 and Cl-, TDS gradually decreased from high plain to plains and valleys and more than 1 000 mg/L of the area was basically located in the high plain. The hydrochemical types of phreatic water were mainly Ca?Na -HCO3 and Ca?Na?Mg-HCO3, and the hydrochemical types of confined water mainly Na-HCO3?Cl and Na?Ca?Mg-HCO3. 【Conclusion】Na+ in groundwater was obtained through the exchange of Na+ in aqueous media with Ca2+ and Mg2+ in groundwater, and the chemical characteristics of the water were mainly affected by the leaching action of sodium and calcium salts. The phreatic water and confined water had generally poor water quality and good only in the valley area. The related research results were intended to provide some reference value for the planning and optimization of water resources in Hulunbuir coal-electricity base. |
| Key words: coal-electricity base; water resources; hydrochemical characteristics; influencing factors; water quality assessment |
