重庆市页岩气开采的浅层地下水污染风险评价

张虹; 张代钧; 卢培利

doi:10.12030/j.cjee.201510208

重庆市页岩气开采的浅层地下水污染风险评价

1.
煤矿灾害动力学与控制国家重点实验室, 重庆大学, 重庆 400044
2.
重庆师范大学地理与旅游学院, 重庆 401331
3.
三峡库区地表过程与环境遥感重点实验室, 重庆 401331
基金项目:
国家自然科学基金资助项目（41501582）

重庆市教委科技项目（KJ120620）

重庆市环保局科技项目（2014-0120）
中图分类号: X523

Primary assessment of shallow ground water pollution risk for shale gas exploitation in Chongqing

1.
State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
2.
College of Geography and Tourism, Chongqing Normal University, Chongqing 401331, China
3.
Key Laboratory of Three Gorges Reservoir Region Surface Processes and Environment Remote Sensing, Chongqing 401331, China
Fund Project:

摘要: 采用岩溶地下水评价模型的欧洲法完成重庆市浅层地下水脆弱性评价，以重庆市重点水污染行业空间分布为基础，结合区域页岩气井分布及开采量，完成重庆市浅层地下水污染源负荷评价。基于GIS设置叠置矩阵，实现重庆市页岩气开采浅层地下水污染风险评价。结果表明：重庆市浅层地下水固有脆弱性中等及以上区域面积29 065.4 km2，占全市35.27%，主要分布在渝东北大巴山及渝东南武陵山地区；重庆市页岩气开采污染源负荷中等及以上区域面积29 124.98 km2，占全市35.35%，主要分布在中部涪陵区、渝西都市区及周边；浅层地下水污染中等及以上风险区域面积12 628.07 km2，占全市总面积的15.33%，其中页岩气规划开采区内面积8 450.86 km2，占类型区面积的66.92%，占规划区18.38%，高风险区主要分布在渝中部涪陵及渝东南彭水局部、黔江局部及秀山等地，中等风险区呈分散分布。页岩气开采应尽量避开岩溶大泉、落水洞等高风险区域，强化防范地下水环境风险的措施，以保证区域地下水安全。
- 页岩气开采 /
- 污染源 /
- 地下水脆弱性 /
- 环境风险评价 /
- 重庆
Abstract: The European method was used to assess shallow groundwater vulnerability in Chongqing. The total pollution in the area was evaluated using the spatial distribution of industrial wastewater as the background and as determined by the density and production of the Shale gas field. Based on GIS coupled with the superimposed matrix, the assessment of environmental risks of shallow groundwater contamination from shale gas exploitation in Chongqing was performed. Results showed the following: 1) the inherent vulnerability of the area with moderate and above moderate shallow groundwater was 29 065.4 km2, or 35.27% of Chongqing, and was distributed in the northeast Daba Mountains and southeast Wuling Mountains of Chongqing; 2) the area with moderate and greater pollution loading was 29 124.98 km2, or 35.35% of Chongqing, and was distributed in Fuling, the western metropolitan and the surrounding region of Chongqing; 3) the area with moderate and above moderate shallow groundwater contamination risk was 12 628.07 km2, which accounted for about 15.33% of Chongqing . In the planned shale gas exploitation zone, the area with moderate and above moderate shallow groundwater contamination risk was 8450.86 km2, which accounted for about 18.38% of the planned shale gas exploitation zone. The high-risk area includes Fuling, part of Pengshui, part of Qijiang, and Xiushan in the southeast of Chongqing; the medium-risk area is dispersed throughout the region. Shale gas exploitation should avoid catchment areas of karst springs, ponors, and other high-risk areas, and measures should be strengthened to prevent environmental risks of contamination to assure the security of groundwater.
- shale gas exploitation /
- pollution source /
- groundwater vulnerability /
- environmental risk assessment /
- Chongqing

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重庆市页岩气开采的浅层地下水污染风险评价

Primary assessment of shallow ground water pollution risk for shale gas exploitation in Chongqing

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重庆市页岩气开采的浅层地下水污染风险评价

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Primary assessment of shallow ground water pollution risk for shale gas exploitation in Chongqing

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重庆市页岩气开采的浅层地下水污染风险评价

Primary assessment of shallow ground water pollution risk for shale gas exploitation in Chongqing

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重庆市页岩气开采的浅层地下水污染风险评价

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Primary assessment of shallow ground water pollution risk for shale gas exploitation in Chongqing

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