鄂尔多斯市伊金霍洛旗煤矿区降尘特征研究
发布时间:2018-01-15 16:03
本文关键词:鄂尔多斯市伊金霍洛旗煤矿区降尘特征研究 出处:《干旱区资源与环境》2017年09期 论文类型:期刊论文
【摘要】:通过对鄂尔多斯伊金霍洛旗纳林陶亥煤矿区一年内大气降尘监测样点的数据分析,研究了煤矿区大气降尘的特征,评价了煤矿区大气环境的污染程度。结果表明:从一年内降尘量月平均分布特征来看,年内降尘量最高的月份为12月,降尘量最高达到128.94t/km~2·30d,最低月份为4月,仅为42.86t/km~2·30d,冬春季降尘量明显高于夏秋季;从降尘区域分布特征来看,工业区、采坑及周边、交通区是主要的降尘分布区,年度平均降尘量在88.79-149.65t/km~2·30d之间,明显高于居民区的77.83t/km~2·30d和农业区的73.93t/km~2·30d;从降尘量的空间分布特征来看,距离采矿核心区域0-1000m范围的年均降尘量最小为62.36t/km~2·30d,1000-3000m范围内,大气降尘均量达峰值为128.69t/km~2·30d,随距离的变化降尘量呈衰减趋势;对比自治区其他省份降尘限值要求,研究区明显高于其他地区,采煤活动已对伊金霍洛旗纳林陶亥矿区造成了严重的粉尘污染,采煤活动是大气降尘的主要来源。
[Abstract]:The characteristics of atmospheric dust fall in the coal mine area are studied by analyzing the data of the monitoring points of atmospheric dust fall in the Nalintaohe coal mine area of Erdos Ijinhuoluo Banner within one year. The pollution degree of atmospheric environment in coal mining area is evaluated. The results show that the month of annual dust fall is December according to the monthly average distribution of dust fall in one year. The highest dust fall was 128.94 t / km ~ (-1) 2.30d, and the lowest month was April (42.86 t / kg ~ (-1) 2.30d). The dust fall in winter and spring was obviously higher than that in summer and autumn. According to the regional distribution characteristics of dust fall, industrial area, mining pit and surrounding area and traffic area are the main distribution areas of dust fall, the average annual dust fall amount is between 88.79-149.65t / km ~ (-1) 2.30d. It was significantly higher than that of 77.83 t / kg / kg in residential areas and 2.30 days in agricultural areas respectively, and was significantly higher than that of 77.83 t / kg / kg in residential areas and 2.30 days in agricultural areas. According to the spatial distribution characteristics of dust fall, the minimum annual dust fall within the range of 0-1000m from the mining core area is within the range of 62.36t / kg / kg 2.30dg ~ 1000-3000m. The average amount of dust fall in the atmosphere reaches the peak value of 128.69 t / km ~ (-1) for 2.30 days, which tends to decrease with the change of distance. Compared with other provinces in the autonomous region, the study area is significantly higher than other areas, coal mining activities have caused serious dust pollution in Nalintaohe mining area of Ijin Horo Banner. Coal mining is the main source of atmospheric dust.
【作者单位】: 内蒙古自治区土地调查规划院;内蒙古大学公共管理学院;
【基金】:国土资源部公益性行业科研专项项目(201211050) 内蒙古自治区高等学校科学技术研究项目(No.NJSY14025) 2012年产业创新人才团队资助
【分类号】:X513;X752
【正文快照】: 大气降尘是大气中粒径大于10μm的固体颗粒物的总称[1-2]。随着我国城镇化、工业化进程的推进,降尘量明显增加,大气降尘成为大气污染物监测的主要指标之一。以往的研究大多将大气降尘与降尘中携带的重金属污染物结合起来分析,重点探讨降尘重金属元素的污染特征等问题[3-6],并,
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