| 河南嵩县北部基岩山区地下水水化学特征和环境同位素特征分析 |
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| 关键词:bedrock mountain area groundwater hydrochemical characteristics hydrogen and oxygen isotopes tritium |
| 基金项目:中国地质调查局地质调查项目“太行山区1:5万水文地质调查(9幅)”(编号: 12120114010801) |
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| An Analysis of Hydrochemical Characteristics and Environmental Isotopic Characteristics of the Groundwater in the Bedrock Mountain Area in Northern Songxian County, Henan Province |
| The bedrock mountain area in the north of Songxian County is located in the south of eastern Xiong’er Mountain, with an uneven distribution of groundwater and surface water. With an aim to help water exploration for this region which lacks water supply, the authors conducted a study of groundwater characteristics and hydraulic relationships between recharge, runoff and discharge in the bedrock mountain area through field investigation and groundwater sampling. Hydrochemical and environmental isotopic compositions in different waters were determined from the results of water analysis of these samples. Temporal-spatial variations in these compositions indicate the recharge sources of the groundwater in this area and the interactions between the identified aquifers. The analysis of hydrochemical and environmental isotopes indicates that the primary recharge of the groundwater in this area is from precipitation, and the primary discharge results from human withdrawal. It is found that the bedrock fissure water can be classified into several types based on hydrochemistry; however, the loose rock pore water and the fissure-pore water in shallow or deep semi-consolidated strata mainly exist in Ca-HCO3 waters. It is also detected that the hydraulic connection between the loose rock pore water and the fissure-pore water in shallow semi-consolidated strata is strong, and the bedrock fissure water is interacted with modern water through water-conductive tectonic fractures, which is of significance in water exploitation. Nevertheless, the fissure-pore water in deep semi-consolidated strata participates weakly in the water cycle, which should be cautious in pumping. These findings could provide scientific basis and data for sustainable utilization of the groundwater in this water-lacking area. |
| LI Xia,CHEN Wen-fang,WAN Li-qin,XIA Fei-xue,ZHANG Yi-bo,YUAN Meng-li.2017.An Analysis of Hydrochemical Characteristics and Environmental Isotopic Characteristics of the Groundwater in the Bedrock Mountain Area in Northern Songxian County, Henan Province[J].Acta Geoscientica Sinica,38(3):403-412. |
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