岩溶区集中式饮用水源地水质评价与保护——以毕节市倒天河水库和利民水库为例     

莫世江  刘勇  张鹏飞  丁卫红 《云南地理环境研究》2006,18(5):24-27

采用SPSS软件，对2003年01月至2004年12月期间，倒天河水库和利民水库逐月水质监测数据进行数理统计分析，结果表明毕节市饮用水水质污染有较明显的季节变化和空间差异；且不同污染物对水体污染的贡献率各不相同，总磷和粪大肠菌群所占份额最大，方差累积贡献率达77％。在此基础上，利用加权综合污染指数对水体水质污染现状进行综合评价，结果显示倒天河水库和利民水库，水质污染总体较轻．饮用水水质符合《地表水环境质量标准（GB3838—2002）》中Ⅲ类水质标准；最后提出加大水环境保护的建议。  相似文献   

与危机矿山接替资源勘查有关的成矿找矿模式   总被引：1，自引：0，他引：1  

吕志成 《矿床地质》2006,25(Z3):439-442

简要叙述了与危机矿山接替资源勘查工作有关的一些成矿找矿模式，包括：绿岩带金矿新模式，斑岩铜矿模式，微细浸染型金矿深部找矿模式，铜镍硫化物深部找矿模式，金和铅锌矿共伴生模式等，以期为危机矿山深部和外围找矿勘查工作提供思路。  相似文献   

全国主要固体矿产大中型矿山资源潜力调查资料初步汇总概述     

全国危机矿山接替资源找矿项目办公室技术管理处汇总组 《矿床地质》2006,25(Z3):455-458

中国主要固体矿产大中型矿山大多数分布于中东部地区，对第一批500余座矿山资源潜力调查资料初步评估汇总表明，占矿山总数的3/4矿山为资源型危机矿山，近200座约占1/3的调查矿山具有进一步寻找接替资源潜力；对危机矿山接替资源找矿勘查区的区域分布、主攻矿床类型、找矿预测方法及找矿勘查技术手段等资料数据开展综合汇总，结合相关数理统计分析和GIS空间分析，获得了一批数据图表，为编制“纲要”实施方案和危机矿山专项的工作部署提供了重要依据。  相似文献   

第四届农业水土工程学术年会在河海大学举行          下载免费PDF全文

《水科学进展》2006,17(5):644-644

由中国农业工程学会农业水土工程专业委员会主办、河海大学承办的第四届农业水土工程学术年会暨农业水土资源高效利用与生态环境保护国际学术研讨会于8月16-18日在河海大学举行，来自中国、美国、加拿大、日本、香港等国家和地区的50余所高等院校、科研院所、生产单位及政府部门的近200名专家、学者出席会议。开幕式由河海大学副校长徐辉主持，河海大学党委书记林萍华、中国农业工程学会秘书长管小冬、农业水土工程专业委员会主任委员康绍忠分别致辞。  相似文献   

Studies on environment protection of vanadium exploitation in open air     

Shenggao CHENG Qi AN Jing HU 《中国地球化学学报》2006,25(B08):29-29

Vanadium, improving mechanism and jointing capacity of steel products, is a kind of excellent additive during steel-making and its industry gets support from national industry policy. On account of shallow buried depth and low technique request of exploitation, there is much exploitation by local people lacking system management and technique guidance in area rich in vanadium since years ago, which damages regional environment dramatically. Accordingly, taking stone coal-vanadium as an example, the paper focuses on environment impact on water environment and eco-environment caused by exploitation in open air. Impact of exploitation on surface water mainly includes mining drainage and eluviated water of stock yard. According to civilian exploitation in the area, the rock suffers man-made disturbance, therefore, water quality indicators of mining drainage like heavy metal, permanganate, CI, SO4^2-, F are able to be analogies of ground water quantity in the region since the primary component of drainage is surrounding rock ground water. Water monitoring result of local well shows as follows： pH 6.68, SO4^2- 5.76 mg/L, F- 0.005 mg/L, Fe 0.025 mg/L, Mo 8.08 μg/L, Ni 5.91 μg/L, Co 0.61 μg/L, and all of them reach corresponding standard of water quality. Ground water turns into acid mine water by oxygenation after it discharges and with the help of sulfur the acid water contains nocuous elements which permeate in groundwater and surface water arousing pollution. The value of pH in the range of standard indicates that the acidification of mine water is relatively weak in the diggings. Eco-environment damage is another aspect that cannot be ignored, it acts as： （1） peeling work and establishment construction destroy landform; （2） stack of waste soil and rock occupies amounts of land; （3） various exploitation activities like vegetation peeling, landform change will enlarge the scope or enhance the intensity of soil erosion, which destroys eco-environment by leading water and soil loss;  相似文献   

The concentration and distribution of different mercury species in the water columns and sediment of Aha Lake     

Weiyang BAI Xinbin FENG Xuewu FU Tianrong HE Guangle QIU 《中国地球化学学报》2006,25(B08):154-154

In order to find out whether Aha Lake was polluted by the acid mining waste water or not, the concentration and distribution of different mercuryspecies in the water columns and sediment profile collected from Aha Lake were investigated. It was found that discernible seasonal variation of different mercury species in water body were obtained in the Aha Reservoir. With regards to the whole sampling periods, the concentrations of HgP in the Aha Reservoir water body were evidently correlated to the concentrations of total mercury, showing that total mercury was mostly associated with particle mercury. The concentrations of methylmercury in water body were also evidently correlated to the concentrations of dissolved mercury. The dissolved mercury evidently affects the distribution and transportation of methylmercury. However, there is no correlation between methylmercury and total mercury. The dissolved mercury, reactive mercury, dissolved methylmercury levels in the water body of high flow period were much higher than those in low flow period. The distribution, speciation and levels of mercury within the Aha Reservoir water body were governed by several factors, such as the output of river, the release of sediment . Discernible seasonal variation of total mercury and methylmercury in porewater was described during the sampling periods, with the concentrations in high flow period generally higher than those in low flow period. The methylmercury in pore water column was evidently correlated to that of the sediment. The results indicated that highly elevated MeHgD concentrations in the porewater were produced at the depths from 2 to 5 cm in the sediment profile, and decreased sharply with depth. A positive correlation has been found between MeHgD formation and sulfate reducing bacterial activity. These highly elevated concentrations of MeHgD at the intersurface between waters and sediments suggest a favorable methylation condition. Moreover,  相似文献   

加强矿石资源动态管理,确保矿山持续生产     

龙启和 《矿产与地质》2006,(5)

一个已开采46年的老锡矿山,由于后备矿石资源不足,矿山与选厂的生产矛盾日益突出.为了缓解供需矛盾,同时也为了自己的生存与发展,在矿山生产中加强了矿石资源动态管理,客观地分析保有资源,以市场经济为导向,确定合理的经济品位,盘活存量,充分而合理地利用矿石资源,保证了矿山持续生产.  相似文献   

江西省会昌县苦竹岽锡矿地质特征及矿山探(采)结合初探     

张庆林  何桂红 《华东地质学院学报》2006,(Z1):167-171

苦竹岽锡矿位于密坑山杂岩体北西部边缘与侏罗系上统鸡笼嶂组火山岩接触部位,明显受近东西向、南北向断裂带和接触带三者控制,为岩浆期后高中温气化热液微细脉浸染型矿床。在矿山探(采)过程中,进一步分析研究了锡矿的控矿因素和矿体的变化规律,指导矿山探(采)工程的布置,收到良好的效果,对今后矿山的探(采)工作具有较大的现实意义。  相似文献   

江苏省矿山的主要生态环境问题及治理对策     

徐翠云 《中国地质灾害与防治学报》2006,17(2):160-163

江苏的经济发展较快,对矿产资源的需求量亦大。多年来的无序开采,对生态环境造成很大的破坏和影响,出现了山体植被遭受破坏、土地被占用、环境受污染、诱发地面沉降、地面塌陷等一系列问题,已影响到国民经济的发展。随着省人大和省政府关于限制开山采石和保护环境等政策、法规出台和落实,近几年乱采滥挖现象基本得到了有效的遏制。人们的环保意识得到了加强,不少矿山已逐步开始对环境治理,且初见成效。文章介绍了江苏生态环境现状、存在的主要问题和治理对策,以期引起各级政府和广大民众在对矿产资源开采的同时更要注重环境保护。  相似文献   

龙永煤田危机矿山资源接替的几种勘探模式     

何仲秋 《中国煤田地质》2006,18(1):21-23

通过龙永煤田现有煤矿状况调查分析发现：许多矿井已步入“花甲之年”，接近矿井服务年限。为了保障我省能源安全，应当采用有效勘探方法，方能使它们“返老还童”。研究发现危机矿山延长服务年限的几种勘探模式是：其一为扩大（延伸）勘探模式；其二为小型井田（块段）勘探模式；其三为资料分析研究模式。经探采对比发现，采用这三种勘探模式后，产生了巨大的经济效益，使一大批老矿井青春再度焕发。  相似文献