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辽西地下水化学影响指标的水岩作用分析

李霄1*,柴璐1,王红岩2,都基众1,王晓光1,崔健1#br#   

  1. (1中国地质调查局沈阳地质调查中心, 沈阳 110034; 2青海煤炭地质一三二勘探队, 西宁 810012)
  • 出版日期:2016-10-10 发布日期:2016-10-10

Water-rock effect analysis on the impact factors of groundwater chemistry of Huludao City, West Liaoning Province.

LI Xiao1*, CHAI Lu1, WANG Hong-yan2, DU Ji-zhong1, WANG Xiao-guang1, CUI Jian1#br#   

  1. (1Shenyang Institute of Geology and Mineral Resources, China Geological Survey, Shenyang 110034, China; 2Qinghai No. 132 Coal Geological Exploration Team, Xining 810012, China).
  • Online:2016-10-10 Published:2016-10-10

摘要: 为查明葫芦岛市浅层地下水的水化学特征,对采集的地下水样品进行了测试分析,采用模糊综合评价法和层级阶梯法进行地下水质量与污染综合评价。在此基础上,利用相关系数法筛选出影响地下水化学特征的指标,应用水文地球化学模拟方法分析各指标的成因机制。结果表明:研究区由低山丘陵向沿海冲积平原,地下水化学类型由HCO3型水过渡至HCO3·SO4、HCO3·Cl型水;Ⅰ~Ⅲ类、Ⅳ和Ⅴ类水质分别占样品总数的44%、4%和52%;中度、重度和极重度污染水样比例分别为48%、36%和16%;影响水质与污染状况的指标有Na+、K+、Ca2+、Mg2+、HCO3-、SO42-、Cl-、Br、NH4+、NO3-和Pb,成因机制主要是阳离子交换吸附、蒸发蒸腾和氧化还原作用,地区农业生产、采矿活动和海水入侵现象是造成浅层地下水水质恶化、污染加重的主要因素。

关键词: CERES-Rice作物模型, CO2和温度, OTC, 寒地水稻

Abstract: In order to find out the shallow groundwater quality and contamination situation of Huludao City, the groundwater samples were analyzed with the fuzzy comprehensive evaluation and hierarchy ladder methods. Based on the evaluation results, some main indicators affecting the water quality and pollution status were chosen. The hydrogeochemical simulation method was then adopted to analyze the genetic mechanism of various indicators. The results showed that, from the inland mountain foothills to coastal alluvial plain, the shallow groundwater chemical type changed from HCO3 to HCO3·SO4 and HCO3·Cl gradually. Groundwater quality levels of Ⅰ-Ⅲ, Ⅳ and Ⅴ accounted for 44%, 4% and 52% of the total, respectively. Moderately, heavy and severely heavy polluted water samples accounted for 48%, 36% and 16% of the total, respectively. It was concluded that Na+, K+, Ca2+, Mg2+, HCO3-, SO42-, Cl-, Br, NH4+, NO3- and Pb were impact indicators of the groundwater quality and contamination status. The genetic mechanism mainly included cation exchange adsorption, transpiration, evaporation, and redox reaction. Regional agricultural production, mining activities and seawater intrusion were the major factors leading to the quality deterioration and contamination severity of the shallow groundwater.

Key words: CERES-Rice crop model., cold-terra rice, CO2 and temperature, OTC