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山东省是一个矿业大省、经济大省,是我国重要的能源和黄金生产基地,同时也是水质型缺水省份之一。矿产资源开采过程中,每年都有大量的井下矿坑水向外部环境排放,不但造成了地表水和浅层地下水污染,而且还引发了岩溶塌陷、海水入侵等次生地质灾害。本文重点对山东省煤矿、铁矿、金矿等主要的矿产资源开发引发的地下水系统影响进行了研究,分析了主要开采矿山导致产生地下水疏干漏斗、引起区域地下水位持续下降,降低了地下水的调蓄能力,改变含水层的地球化学环境,地下水水质进一步恶化,致使地下水可利用资源量逐渐减少,该研究为有关政府部门督促矿山企业对矿坑水资源化综合利用及水资源保护、减少矿山开采对地下水环境的影响提供参考。 相似文献
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分析煤炭开采对地下水水质、水量和水平衡等方面的影响。结合《环境影响评价技术导则地下水环境》(HJ610-2011),讨论煤炭开采的地下水环境影响评价相关内容。提出煤炭开采的地下水环境影响评价按Ⅱ类项目执行,评价级别为二级及以上,必要时,可依据项目特征、影响程度等因素,对井区(Ⅱ类)和排矸石场等(Ⅰ类)进行分区评价;监测、评价因子选择应综合考虑常规指标、国家和地方控制污染物指标以及煤炭行业特征污染因子等建议。 相似文献
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《地下水》2017,(6)
环境影响评价制度是我国环境保护工作当中一项重要制度,而金属矿山开采中重金属污染及矿坑排水对地下水水质影响很大。为保护地下水环境,铅锌矿开采前进行地下水环境影响评价研究是十分必要的。本文以陕西安康某铅锌矿为例,依据《环境影响评价技术导则地下水环境》(HJ610-2016),在识别地下水环境影响和确定地下水环境影响评价工作等级的前提下,对该评价区从水文地质条件、水质水位调查和水文地质勘察试验三方面开展地下水环境评价研究,预测评价铅锌矿开采对地下水水质可能造成的直接影响,提出应加强铅锌矿运行期污染防控措施和地下水的长期观测,有针对性的制定出地下水环境影响监测计划和应急预案,保证该矿区范围内地下水水质安全。 相似文献
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天津市宁河县地下水安全AHP模糊评价浅析 总被引：1，自引：0，他引：1
由宁河县多年平均各含水组开采状况可知,第Ⅱ含水组开采比例占到了全县地下水总开采量的55%,开采强度在各含水组中也属最大,导致了该层地下水水位的持续下降,引起了地下水水质恶化、地下水资源枯竭、地面沉降等一系列环境地质问题。本文参考前人的研究成果,从地下水的安全内涵出发,构建了包括水质安全、水量安全、含水层安全和生态环境安全的4个一级评价指标,15个二级评价指标的地下水安全评价指标体系,建立了基于AHP的模糊综合评价模型,选取宁河县第Ⅱ含水组10个有代表性采样点进行安全现状分析,并在对地下水环境地质条件深入分析的基础上,量化了地下水安全评价分级标准,取得了与实际较为相符的结果。 相似文献
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从水文地质条件、充水情况等方面研究影响司家营铁矿Ⅲ采场地下水涌水量因素;在矿区水文地质条件的基础上,进行了矿区地下水均衡计算,通过矿区地下水影响因素的综合分析,计算出矿区地下水总补给量和总排泄量,得出两者的平衡关系;分别采用大井法及数值模拟法,对司家营铁矿Ⅲ采场露天转井下深部开采不同中段的地下水涌水量进行计算,并结合自然降水和考虑露天采场回填废石影响,系统预测了不同开采中段矿坑总涌水量。研究成果表明,矿区地下水呈负均衡状态,对矿区开采呈有利态势;矿坑系统涌水量综合预测结果与阶段性的实测资料较为一致,为司家营铁矿Ⅲ采场井下防排水及地质环境保护奠定了基础。 相似文献
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《水文地质工程地质》2014,(2)
从水文地质条件、充水情况等方面研究影响司家营铁矿Ⅲ采场地下水涌水量因素;在矿区水文地质条件的基础上,进行了矿区地下水均衡计算,通过矿区地下水影响因素的综合分析,计算出矿区地下水总补给量和总排泄量,得出两者的平衡关系;分别采用大井法及数值模拟法,对司家营铁矿Ⅲ采场露天转井下深部开采不同中段的地下水涌水量进行计算,并结合自然降水和考虑露天采场回填废石影响,系统预测了不同开采中段矿坑总涌水量。研究成果表明,矿区地下水呈负均衡状态,对矿区开采呈有利态势;矿坑系统涌水量综合预测结果与阶段性的实测资料较为一致,为司家营铁矿Ⅲ采场井下防排水及地质环境保护奠定了基础。 相似文献
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Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco. 相似文献
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Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 相似文献
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The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引：4，自引：0，他引：4
The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H2O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H2O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species. 相似文献
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Emmanuel Skourtsos Daniel Vachard Alexandra Zambetakis-Lekkas Rossana Martini Louisette Zaninetti 《Comptes Rendus Geoscience》2002,334(12):925-931
Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931. 相似文献
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正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.) 相似文献
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正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.) 相似文献
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正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.) 相似文献
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正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus., 相似文献
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正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an 相似文献
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正20141266Fan Chaoyan(Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes,Guangzhou 510275,China);Wang Zhenghai On Error Analysis and Correction Method of Measured Strata Section with Wire Projection Method(Journal of 相似文献