| 阿什河流域地下水脆弱性分区 |
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| 引用本文： | 林茂,纪丹凤,崔驰飞,孙源媛,苏婧,席北斗,Erik Nixdorf.阿什河流域地下水脆弱性分区[J].环境科学研究,2016,29(12):1773-1781. |
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| 作者姓名： | 林茂 纪丹凤 崔驰飞 孙源媛 苏婧 席北斗 Erik Nixdorf |
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| 作者单位： | 1.上海大学环境与化学工程学院, 上海 200444 |
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| 基金项目： | 北京市科技计划项目(D141100004514001) |
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| 摘 要： | 为识别阿什河流域地下水易污区,基于DRASTIC模型,结合研究区水文地质特点和地下水源地特质,舍弃土壤类型和水力传导系数指标,新增抽水井群影响范围评价指标,得到适用于阿什河流域的DRATIE脆弱性评价体系.借助OpenGeoSys(OGS)软件,模拟研究区抽水与不抽水时的地下水流场,圈划出抽水时流场的变化区域,划分抽水井群影响范围.运用DRATIE模型对研究区进行脆弱性评价,绘制研究区地下水脆弱性分区图,并根据用水趋势进行脆弱性情景分析.结果表明:研究区地下水脆弱性主要为较低、中、较高3个级别；河漫滩和阶地区域较易受到污染,抽水井群影响范围内脆弱性为中等,1号井群每口井抽水量不宜超过3.23×10-2 m3/s,2号井群每口井抽水量不宜超过4.00×10-2 m3/s；其余地区较不易受到污染.研究显示,应严格控制水源地抽水量,以防阿什河水体倒灌；合理分配1、2号井群抽水量,可减小水源地脆弱性范围和等级.
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| 关 键 词： | 阿什河流域 地下水源地 脆弱性评价 抽水井群影响范围 |
| 收稿时间： | 2016/4/27 0:00:00 |
| 修稿时间： | 2016/9/28 0:00:00 |
Groundwater Vulnerability Partition in Ashi River Basin |
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| LIN Mao,JI Danfeng,CUI Chifei,SUN Yuanyuan,SU Jing,XI Beidou and Eric Nixdorf.Groundwater Vulnerability Partition in Ashi River Basin[J].Research of Environmental Sciences,2016,29(12):1773-1781. |
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| Authors: | LIN Mao JI Danfeng CUI Chifei SUN Yuanyuan SU Jing XI Beidou and Eric Nixdorf |
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| Affiliation: | 1.School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China2.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China3.Homeland Environmental Protection Water Pollution Governance Academician Workstation, Guangzhou 510630, China4.Department of Environmental Informatics, Helmholtz Center for Environmental Research, Permoserstr.15, Leipzig 04318, Germany |
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| Abstract: | In order to identify the vulnerable areas of groundwater in Ashi River Basinto provide scientific basis for groundwater protection, a DRATIE model suitable for vulnerability assessment of the area was proposed. The indicator system of DRATIE was composed by the scope of effect of pumping well group and the five factors of DRASTIC(excluding the difference soil types and hydraulic conductivity), while considering the characteristics of Ashi River Basin. The scope of effect of the pumping well group could be determined by between the simulated groundwater flow fields with and without pumping. The DRATIE model was applied to the study area, and a groundwater vulnerability zoning map was developed by the evaluation results. Groundwater vulnerability with increasing pump discharge was also analyzed under different scenarios. The results demonstrated that the groundwater vulnerability mainly ranked as relatively low, medium and relatively high in the area. The vulnerability grade in the scope of effect of pumping well group was medium, and pumping rate per well in the No.1 and No.2 well groups should not be more than 3.23×10-2 and 4.00×10-2 m3/s respectively. The flood plain and terrace area were easily polluted, while the remaining areas were not. The results indicated that pumping rate should be strictly controlled in case water in Ashi River flows backwards； and vulnerable range and level of groundwater source area could be reduced by appropriately allocating the pumping rate of the No.1 and No.2 well groups. |
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