| 水力压裂对地下水影响的深部脆弱性评价 |
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| 引用本文： | 芦红,王丽,杨鑫鑫,郝光,刘明柱.水力压裂对地下水影响的深部脆弱性评价[J].地球科学,2019,44(9):2920-2930. |
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| 作者姓名： | 芦红 王丽 杨鑫鑫 郝光 刘明柱 |
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| 作者单位： | 1.中国地质大学水资源与环境学院, 北京 100083 |
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| 基金项目： | 贵州省公益性基础性地质工作项目黔国土资地环函[2014]23号 |
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| 摘 要： | 为评价区块尺度页岩气开采过程中深部污染物对上部含水层的污染风险，基于“源-途径-驱动力-受体”概念模型，采用层次分析法构建了页岩气开采对地下水影响的深部脆弱性评价指标体系.利用该体系对贵州省某页岩气开采区块进行了评价，结果表明:评价区地下水深部脆弱性以低和较低为主，两者面积占研究区总面积的69.15%，主要分布于研究区西北部、中部及东南部，中间层厚度是影响评价结果的主要指标.该评价体系能够评估页岩气开采区地下水深部脆弱性，丰富了现有地下水脆弱性评价体系，可为区块内页岩气井的布设选址及地下水环境保护提供技术支撑.
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| 关 键 词： | 页岩气 地下水 深部脆弱性评价 概念模型 水文地质 |
| 收稿时间： | 2019-06-18 |
Deep Vulnerability Assessment of Hydraulic Fracturing Effect on Groundwater |
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| Abstract: | In order to evaluate the pollution risk of deep pollution sources on upper aquifer during shale gas exploitation, the deep vulnerability assessment index system of groundwater was built up by analytic hierarchy process from three aspects:natural protection, impact route and driving force, based on the "source-pathway-drive-receptor" conceptual model. In addition, groundwater deep vulnerability assessment of shale gas mining block in Guizhou Province was assessed as an example. The results show the deep groundwater vulnerability rank mainly is low and medium-low in the study area, accounting for 69.15% of the total area, which is distributed in the northwest, central and southeast of the study area. The thickness of the intermediate layer is the main indicator affecting the evaluation. The evaluation system can be applied to the groundwater deep vulnerability assessment of shale gas exploitation area, enriching the existing groundwater vulnerability assessment system, and providing technical support for shale gas well layout and groundwater environmental protection. |
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