本文主要研究内容
作者饶磊（2019）在《西南岩溶区某锶矿场地下水污染模拟及风险评价》一文中研究指出：多年来地下水环境深受人类活动的影响,部分地区正面临地下水资源枯竭和生态环境状况恶化等问题。同时,岩溶区作为生态系统十分脆弱的区域,地下水系统更易受到地表污染的影响。为减小矿业开采过程中产生的废水废矿对地下水环境的不利影响,本文以位于渝西大足岩溶区的某锶矿场为例,通过现场调查和收集相关水文地质资料,分析了矿区地下水环境质量现状。同时,建立Visual MODFLOW地下水流模型和溶质运移模型,预测矿区污水池非正常泄露后污染物在含水层的迁移规律。最后建立了基于矿区锶矿开采过程中的污染源载荷风险和地下水固有脆弱性的地下水污染风险评价体系,确定矿区地下水污染综合风险等级。得出的结论将为矿区预防潜在的地下水污染问题提供科学的理论依据。据研究区地下水样数据,通过苏卡列夫法确定地下水化学类型主要为HCO3—Ca型。利用单因子法、典型的内梅罗指数法和改进的内梅罗指数法,共分析了12个一般化学污染指标和毒理学指标,得出矿区地下水样点质量均达到III类及更好标准,且改进的内梅罗指数法的结果更准确。据污染相关分析,地下水质量主要受农业灌溉和居民生活的影响,区内矿业开采主要影响附近地下水质量。建立地下水流数值模型并选取危害较大污染物铅和特征污染物锶作溶质运移模拟。模拟发现干堰塘矿场非正常情景下污染羽沿水流向西扩散,最终向下游西南方龙井泉点处迁移;根据检出限值,锶在第7300天时最远迁移距离达到245.5 m,并已达到生态敏感点龙井泉点,而铅在第7300天时最远迁移距离达到155 m,未达到龙井泉点。十字路矿场污染羽在模拟期内主要向四周扩散,锶在第7300天时最远迁移距离为102.5m,而铅第7300天时最远迁移距离为83.5m,因其距居民生活区较远且周围无明显生态敏感点,十字路矿区在非正常污染泄露对周围环境相对较小。针对矿井开采废水泄露对矿区地下水的污染风险,建立了基于矿区锶矿开采过程中的污染源载荷风险评价模型和地下水固有脆弱性评价模型的综合污染风险评价体系。同时以层次分析法分别确定各模型评价指标权重。利用矩阵法叠加二者评价结果,得到矿区综合地下水污染风险为中等风险。
Abstract
duo nian lai de xia shui huan jing shen shou ren lei huo dong de ying xiang ,bu fen de ou zheng mian lin de xia shui zi yuan ku jie he sheng tai huan jing zhuang kuang e hua deng wen ti 。tong shi ,yan rong ou zuo wei sheng tai ji tong shi fen cui ruo de ou yu ,de xia shui ji tong geng yi shou dao de biao wu ran de ying xiang 。wei jian xiao kuang ye kai cai guo cheng zhong chan sheng de fei shui fei kuang dui de xia shui huan jing de bu li ying xiang ,ben wen yi wei yu yu xi da zu yan rong ou de mou si kuang chang wei li ,tong guo xian chang diao cha he shou ji xiang guan shui wen de zhi zi liao ,fen xi le kuang ou de xia shui huan jing zhi liang xian zhuang 。tong shi ,jian li Visual MODFLOWde xia shui liu mo xing he rong zhi yun yi mo xing ,yu ce kuang ou wu shui chi fei zheng chang xie lou hou wu ran wu zai han shui ceng de qian yi gui lv 。zui hou jian li le ji yu kuang ou si kuang kai cai guo cheng zhong de wu ran yuan zai he feng xian he de xia shui gu you cui ruo xing de de xia shui wu ran feng xian ping jia ti ji ,que ding kuang ou de xia shui wu ran zeng ge feng xian deng ji 。de chu de jie lun jiang wei kuang ou yu fang qian zai de de xia shui wu ran wen ti di gong ke xue de li lun yi ju 。ju yan jiu ou de xia shui yang shu ju ,tong guo su ka lie fu fa que ding de xia shui hua xue lei xing zhu yao wei HCO3—Caxing 。li yong chan yin zi fa 、dian xing de nei mei luo zhi shu fa he gai jin de nei mei luo zhi shu fa ,gong fen xi le 12ge yi ban hua xue wu ran zhi biao he du li xue zhi biao ,de chu kuang ou de xia shui yang dian zhi liang jun da dao IIIlei ji geng hao biao zhun ,ju gai jin de nei mei luo zhi shu fa de jie guo geng zhun que 。ju wu ran xiang guan fen xi ,de xia shui zhi liang zhu yao shou nong ye guan gai he ju min sheng huo de ying xiang ,ou nei kuang ye kai cai zhu yao ying xiang fu jin de xia shui zhi liang 。jian li de xia shui liu shu zhi mo xing bing shua qu wei hai jiao da wu ran wu qian he te zheng wu ran wu si zuo rong zhi yun yi mo ni 。mo ni fa xian gan yan tang kuang chang fei zheng chang qing jing xia wu ran yu yan shui liu xiang xi kuo san ,zui zhong xiang xia you xi na fang long jing quan dian chu qian yi ;gen ju jian chu xian zhi ,si zai di 7300tian shi zui yuan qian yi ju li da dao 245.5 m,bing yi da dao sheng tai min gan dian long jing quan dian ,er qian zai di 7300tian shi zui yuan qian yi ju li da dao 155 m,wei da dao long jing quan dian 。shi zi lu kuang chang wu ran yu zai mo ni ji nei zhu yao xiang si zhou kuo san ,si zai di 7300tian shi zui yuan qian yi ju li wei 102.5m,er qian di 7300tian shi zui yuan qian yi ju li wei 83.5m,yin ji ju ju min sheng huo ou jiao yuan ju zhou wei mo ming xian sheng tai min gan dian ,shi zi lu kuang ou zai fei zheng chang wu ran xie lou dui zhou wei huan jing xiang dui jiao xiao 。zhen dui kuang jing kai cai fei shui xie lou dui kuang ou de xia shui de wu ran feng xian ,jian li le ji yu kuang ou si kuang kai cai guo cheng zhong de wu ran yuan zai he feng xian ping jia mo xing he de xia shui gu you cui ruo xing ping jia mo xing de zeng ge wu ran feng xian ping jia ti ji 。tong shi yi ceng ci fen xi fa fen bie que ding ge mo xing ping jia zhi biao quan chong 。li yong ju zhen fa die jia er zhe ping jia jie guo ,de dao kuang ou zeng ge de xia shui wu ran feng xian wei zhong deng feng xian 。
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论文作者分别是来自重庆师范大学的饶磊，发表于刊物重庆师范大学2019-07-15论文，是一篇关于岩溶区论文,锶矿场论文,地下水水质论文,数值模拟论文,溶质运移论文,污染风险评价论文,重庆师范大学2019-07-15论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自重庆师范大学2019-07-15论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：岩溶区论文; 锶矿场论文; 地下水水质论文; 数值模拟论文; 溶质运移论文; 污染风险评价论文; 重庆师范大学2019-07-15论文;