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| 废弃矿坑水体主离子化学特征及其灌溉适宜性分析 |
| Irrigation Suitability of Abandoned Mine Water and Its Major Ion Chemical Characteristics |
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| DOI： |
| 中文关键词: 水质评价 灌溉水 水化学特征 废弃矿坑 |
| 英文关键词: Water quality assessment Irrigation water Hydrochemical characteristics Abandoned mine |
| 基金项目:上海市规划和自然资源局重大基础调查基金资助项目（SHXM-00-20180425-5255） |
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| 中文摘要: |
| 分析了上海市某废弃矿坑水样的主离子组成特征及其控制因素，并在钠吸附比法（SAR）、钠含量法（Na%）、残余碳酸钠法（RSC）和灌溉系数法（Ka）评价结果的基础上，利用极限条件法确定水体的灌溉适宜性。结果表明：研究区水样阳离子以Ca2+或Na+为主，阴离子以HCO-3为主；山南侧矿坑水体的溶解性总固体（TDS）含量偏高，主要受蒸发浓缩控制，而山北侧矿坑水体主要受水岩作用控制。山南侧矿坑水样的Na%和RSC不符合适宜灌溉的限值要求，评价结果为不宜直接灌溉，而山北侧矿坑水样的所有评价指标均符合适宜灌溉的限值要求，评价结果为非常适宜。 |
| 英文摘要: |
| The major ion composition characteristics and control factors of the water samples from a abandoned mine in Shanghai were analyzed. On the basic of evaluation results by the methods of sodium adsorption ratio(SAR)， sodium(Na%)content，residual sodium carbonate(RSC) and irrigation coefficient (Ka)，the irrigation suitability of the water was determined by limit condition method. The results showed that the main cations in the water samples from the study area were Ca2+ or Na+，while the major anion was HCO-3. The content of total dissolved solids (TDS) in the mine water on the south side of the mountain was high， which was mainly controlled by evaporation and concentration. The mine water on the north side of the mountain was mainly controlled by water-rock interaction. Na% and RSC of the mine water samples from the south side of the mountain did not meet the limit requirements for irrigation， and the evaluation result was not suitable for direct irrigation. All the evaluation indicators of the mine water samples from the north side of the mountain meet the limit requirements for irrigation， and the evaluation result was very suitable. |
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