重庆西部干旱区煤矿矿井水水质综合评价 |
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引用本文: | 孙红福,赵峰华,张璐,刘一鸣,曹松华,张伟. 重庆西部干旱区煤矿矿井水水质综合评价[J]. 煤炭学报, 2014, 39(4): 736-743 |
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作者姓名: | 孙红福 赵峰华 张璐 刘一鸣 曹松华 张伟 |
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作者单位: | 中国矿业大学(北京) 地球科学与测绘工程学院,北京100083 |
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基金项目: | 国家自然科学基金资助项目(41102096);国家国际科技合作资助项目(S2012GR0036);重庆市科技攻关计划资助项目(2011GGC493) |
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摘 要: | 为了提高重庆西部干旱区煤矿矿井水综合利用水平,缓解该区居民用水严重短缺状况,必须对该区的矿井水水质进行综合评价研究。利用Aq.QA水化学软件和模糊综合评价法对重庆西部干旱地区煤矿矿井水、矿区饮用水和水库水体的水质特征进行了综合评价,并结合煤矿地层特点对矿井水水质成因进行了分析。研究结果表明:91%的矿井水水化学类型为Cl-Na型,矿区饮用水和水库水样均为SO4-Ca型;矿井水中共有9个离子超过国家生活饮用水标准的限制,其中Cl-,Na+和Fe离子超标情况最为严重;矿井水中较高含量的Fe离子来自须家河组地层内菱铁矿结核的溶解,而严重超标的Cl-和Na+可能来自于须家河组地层部分地段岩盐的溶解;10个V级水质的矿井水包括4个微咸水、3个咸水和1个盐水水样,2个矿区饮用水为Ⅲ级水质淡水,2个水库水样和广顺县城饮用水为I级水质;模糊综合评价法能够准确评价不同类型的水体,且能揭示每个水体的主控污染因子,但无法对矿化度大于1 000 mg/L的水体进行深度评价。
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关 键 词: | 重庆西部;干旱区;矿井水;水质评价;模糊综合评价 |
收稿时间: | 2013-04-19 |
Comprehensive assessment of coal mine drainage quality in the arid area of Western Chongqing |
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Abstract: | In order to raise the utilization level of coal mine drainage and alleviate domestic water shortages in the arid area of Western Chongqing,water quality of coal mine drainage in this district must be comprehensively evaluated.Water quality of coal mine drainage,mine drinking water and reservoir water were comprehensive evaluated by Aq.QA water chemistry software and fuzzy comprehensive evaluation method.The results show that hydrochemistry type of 91% mine drainage are Cl-Na type,mine drinking water and reservoir water are SO4-Ca type.There are 9 ions in mine drainage over the national standard of drinking water limit,and the degree of exceed the standard for Cl-,Na+ and Fe ions are most serious.The high content Fe ion in mine drainage is derived from dissolution of siderite concretion in the Xujiahe formation,and dissolution of rock salt in the Xujiahe formation may cause the high content of Cl- and Na+ ions in mine drainage.Ten mine drainage of V grade water quality includes four brackish water,three salt water and one brine.Two mine drinking are Ⅲ grade freshwater,and two reservoir water and one drinking water of Guangshun country are I grade freshwater.Fuzzy comprehensive evaluation method can evaluate different types water accurately,and reveal the main pollution factors of every water.Hovever,fuzzy comprehensive evaluation method can’t further evaluate the mine drainage with salinity over 1 000 mg/L. |
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Keywords: | Western Chongqing;arid area;mine drainage;water quality assessment;fuzzy comprehensive evaluation |
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