| Cite this article: | 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,(12):-. |
| LIU Ji,GAO Min,WANG Qiangmin,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,(12):-. |
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| Hydrochemical characteristics and their influencing factors of groundwater in Hulunbuir coal - electricity base |
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LIU Ji1, GAO Min2, WANG Qiangmin3, YANG Jian3, ZHAO Chunhu3
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1.China Coal Research Institute,beijing;2.Zhongsheng Environmental Technology Development Co, Ltd;3.Xi’an Research Institute of China Coal Technology Engineering Group Corp,Shaanxi,Xi’an
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| Abstract: |
| To understand the water quality of Hulunbuir coal - electricity base, 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 【Objective】To understand the water quality of Hulunbuir coal - electricity base, 81 groundwater samples (of which 42 samples were phreatic water and 39 samples were confined water) were collected for water quality testing. 【Method】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 influence factors was 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 254.81mg/L and 208.22mg/L, respectively, cations were mainly Na+ and Ca2+, anion mainly HCO3－ and Cl－, TDS gradually become lower from high plain to plains and valleys and more than 1000mg / L of the area was basically located in the high plain, The hydrochemical types of phreatic water are mainly Ca?Na - HCO3 and Ca?Na?Mg- HCO3, 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 are 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 |
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