Application of DRASTIC Model Based on AHP in Assessment of Groundwater Vulnerability in Yinchuan City

Liu Naijing; Zhao Yinxin; Wu Wenzhong; Zhang Xiaodong; Wang Gaiping; Zhang Yong; Tian Shuofeng

doi:10.13961/j.cnki.stbctb.2021.01.030

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Application of DRASTIC Model Based on AHP in Assessment of Groundwater Vulnerability in Yinchuan City

- Application of DRASTIC Model Based on AHP in Assessment of Groundwater Vulnerability in Yinchuan City
- Bulletin of Soiland Water Conservation Vol. 41, Issue 1, Pages: 212-218(2021)
- 作者机构：
  
  宁夏回族自治区地质调查院,宁夏,银川,750001
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2021.01.030
  CLC： P641
- Published：2021
- 稿件说明：
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Liu Naijing, Zhao Yinxin, Wu Wenzhong, et al. Application of DRASTIC Model Based on AHP in Assessment of Groundwater Vulnerability in Yinchuan City[J]. Bulletin of Soiland Water Conservation, 2021, 41(1): 212-218.
DOI：

Liu Naijing, Zhao Yinxin, Wu Wenzhong, et al. Application of DRASTIC Model Based on AHP in Assessment of Groundwater Vulnerability in Yinchuan City[J]. Bulletin of Soiland Water Conservation, 2021, 41(1): 212-218. DOI： 10.13961/j.cnki.stbctb.2021.01.030.

摘要

[目的

]

探讨银川市区域地下水防污性能，为都市圈的建设、规划以及地下水资源的保护等方面提供科学依据。[方法

]

以银川市绕城高速内的城区为研究区，综合水文地质条件，选取地下水埋深、净补给量、含水层富水性、土壤类型、包气带岩性和水力传导系数等6个评价因子，利用层次分析法（AHP）确定因子权重，建立适合银川市当地的地下水防污性能DRASTIC评价模型，对银川市地下水防污性能进行了分区评价。[结果

]

①银川市地下水防污性能整体表现为中等-弱，防污性能弱区位于西夏区一带，防污性能强区位于金凤区的北部地区；②防污性评分与NO

的污染特征存在一致性。[结论

]

地下水防污性能评价是预防和保护地下水资源的重要手段。金凤区北部阅海湖区域可作为今后城市扩建的首选区域。

Abstract

[Objective] The vulnerability of regional groundwater in Yinchuan City was examined to provide a scientific basis for the construction

planning

and protection of groundwater resources in cities.[Methods] The urban area of Yinchuan City inside the beltway was considered as the study area. According to local hydrogeological conditions

six evaluation factors

such as depth to water

recharge of precipitation

water yield properties

soil type

impact of the vadose zone

and aquifer hydraulic conductivity

were selected. The corresponding weight was calculated by the analytic hierarchy process (AHP) to establish the DRASTIC model for groundwater vulnerability assessment.[Results] ① The overall performance of groundwater vulnerability in Yinchuan City was medium-weak. The weak area was located in Xixia District

and the strong area was located in the northern part of Jinfeng District. ② The evaluation results were consistent with the pollution characteristics of NO-3.[Conclusion] Groundwater vulnerability assessment is an important means to protect groundwater resources. The Yuehai Lake area in the northern part of Jinfeng District can be used as the preferred area for urban expansion in the future.

关键词

Keywords

references

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