| 煤炭地下气化地下水质量影响评价及其趋势分析 |
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| 作者姓名： | 陈亚伟 王明玉 李玮 王慧芳 王淑平 |
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| 作者单位： | 中国科学院大学资源与环境学院, 北京 100049 |
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| 基金项目： | 国家高技术研究发展计划(863)(2011AA050105)、国家环保公益项目(201309003)和国家自然科学基金(40972166)资助 |
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| 摘 要： | 采用传统水质评价方法对内蒙古某煤炭地下气化研究区的地下水水质进行质量影响评价,分析表明3种传统方法均不能指示煤炭地下气化对地下水环境影响程度,而场地影响指数和单项污染指数则可较好表征煤炭地下气化对地下水质量影响的程度.硫酸盐、氯化物、溶解性固体和挥发酚为主要污染因子,应重点防控.此外,采用数值模拟模型预测煤层气化3年硫酸盐对下游含水层水质的长期迁移扩散,显示10年内均有一定程度影响.
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| 关 键 词： | 煤炭地下气化 地下水质量 环境影响评价 污染预测 |
| 收稿时间： | 2014-04-24 |
| 修稿时间： | 2014-06-04 |
Impact assessment and trend analysis of underground coal gasification on groundwater quality |
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| Authors: | CHEN Yawei WANG Mingyu LI Wei WANG Huifang WANG Shuping |
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| Institution: | College of Resources and Environment, University of Chinese academy of sciences, Beijing 100049, China |
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| Abstract: | The traditional approaches were used to assess the impact of underground coal gasification (UCG) on groundwater quality. The results show that all of those methods cannot reflect the groundwater pollution from UCG effectively, while the site influence index and single pollution index approaches work well. Sulfate, chlorine, dissolved solids, and volatile phenol were main pollution components. In addition, we study the long-term effects of sulfate in UCG of 3 years on downgradient aquifer by using numerical simulation, and the results predict that the effect time would not be less than ten years. |
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| Keywords: | underground coal gasification groundwater quality environmental impact assessment pollution forecast |
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