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641.
本文采用大比例尺彩红外航空遥感手段,研究了金顶集团石灰岩矿山边坡滑坡,崩塌和人工泥石流沟等不良好地质问题,通过不良地质体的形态特征,色调差异和堆积特点在航片上的不同反映,判释了不良地质体内的类型,分布,形成条件和严重程度,以及判释和分析了地形地貌,地层岩性,地质构造等工程地质条件及其对不良地质体的影响,为矿山的进一步开发,规划和边坡整治,提供了可靠依据。 相似文献
642.
鹤壁井煤燃烧的水氡效应分析 总被引:1,自引:0,他引:1
本文通过鹤壁深井煤层特大火灾热源的影响导致的井水氡变化实例,验证了鹤壁井水氡化学组分在温压条件发生变化时具有灵敏的反映。水氡变化曲线图象表现为氡值下降,并讨论了其形成机制。 相似文献
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本文研究的鱼眼石产于江苏溧阳的硅灰石矿区,它主要呈晶簇状、板状和粒状,共生矿物有方解石、石英和硅灰石。偏光镜下无色透明,具有环带构造,干涉色很低并有异常干涉色,油浸法测定ε=1.5374,ω=1.5341。X射线衍射分析、红外吸收光谱分析和差热分析得到的图谱与其他文献中的图谱基本一致,其晶胞参数为a=0.8988,c=1.5832nm。成分和电子顺磁共振分析表明,Mn~(3+)在晶格中的占位是鱼眼石呈粉红色的原因。其化学成分为SiO_2 51.22,CaO27.35,K_2O 4.63,Na_2O 0.16,F 1.86,H_2O~+15.32,H_2O~-0.17,(平均),与国内外鱼眼石相比,它富Ca、F,贫Si、K。 相似文献
645.
湘潭锰矿酸性水的形成,与含矿岩系富含黄铁矿的黑色页岩密切有关。本文揭示了它的形成条件和影响因素及其对工农业生产的危害。作者根据当地酸性水的来源与分布。提出了一些防治措施,并对石灰中和法原理及其应用效果作了介绍。 相似文献
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J.?Tomás?Oliveira Zélia?PereiraEmail author Pedro?Carvalho Nelson?Pacheco Dieter?Korn 《Mineralium Deposita》2004,39(4):422-436
Biostratigraphic research, based on palynomorphs and ammonoids, of the tectonically imbricated lithological succession of the Neves Corvo mine, in the Portuguese part of the Iberian Pyrite Belt, has yielded ages for all formerly recognised lithostratigraphic units. These can be assembled in three main lithological sequences: (1) detrital sandy/shale substrate (Phyllite-Quartzite Formation) of late Famennian age; (2) Volcano-Sedimentary Complex, divided into a lower and an upper suite, in which one basic, three dolerite sills and four felsic volcanic units and a mineralised package of massive sulphides are identified with ages which range from the late Famennian to the late Visean; (3) flysch succession (Mértola Formation) composed of shale and greywacke dated as late Visean to early Serpukhovian. Precise biostratigraphic dating of the sedimentrary host rocks of massive sulphide mineralisation constrains the age of the latter to the late Strunian (354.8–354.0 Ma). Three stratigraphic hiatuses, corresponding to early/middle Strunian, Tournaisian and early Visean respectively and a south-westward progressive unconformity were also recognised. Sequences 1 and 2 are related to extensional episodes while sequence 3 marks the beginning of compressive tectonic inversion which gave rise to south-westward flysch progradation in close relation to a foreland basin development. Our results lead to the reinterpretation of the tectonic structure of the Neves Corvo mine, with implications for the interpretation of the regional basin dynamics and metal exploration.Editorial handling: F. Tornos 相似文献
648.
In December 2001, acid mine drainage (AMD) from an abandoned copper mine at Britannia Beach (British Columbia, Canada) was diverted to flow from Britannia Creek into an outfall at 30 m depth in Howe Sound. Britannia Beach was studied in early 2003 to determine whether AMD diversion resulted in improved conditions for intertidal organisms. Species number and abundance have increased at the intertidal zone since AMD diversion, although they were still lower than at an unpolluted control site nearby (Furry Creek). Survivorship and growth rates of transplanted Mytilus trossulus (mussel) have increased since AMD diversion, although they were still significantly lower than at the control site. Transplanted Fucus gardneri (seaweed) performed better than before the AMD diversion; at Britannia Beach the chlorophyll a concentration in tissues was not significantly different from that at the control site, although the concentration of chlorophyll c in tissues and the chlorophyll c to a ratio was lower than at the control site six weeks after transplantation. Britannia Beach is still subject to leaching of metals from surrounding soils, low levels of AMD coming down the creek, and AMD discharge from the deep outfall. Although there has been an improvement, the intertidal environment at Britannia Beach still seems unable to support normal growth and survival of organisms. 相似文献
649.
Heavy metal pollution and acid drainage from the abandoned Balya Pb-Zn sulfide Mine,NW Anatolia,Turkey 总被引:5,自引:0,他引:5
Atilla?Aykol Murat?BudakogluEmail author Mustafa?Kumral Ali?H.Gultekin Melih?Turhan Vildan?Esenli Fuat?Yavuz Yuksel?Orgun 《Environmental Geology》2003,45(2):198-208
This study was conducted to determine the effects of the waste-rock dump (WRD) of the underground polymetallic Balya Mine on the Kocacay River and eventually on Lake Manyas in Turkey. Data presented in this paper include geochemical characteristics of various kinds of water (mine, surface and groundwater) and of suspended-particle samples in the vicinity of Balya. The more polluted mine waters have low pH and high conductivity, while high concentrations of Zn, Cd, Mn tend to be found in the dry and wet seasons. High concentrations of Pb, As, Cr, Cu and S appear only in the wet season. The sources of the heavy metal concentration within the Kocacay River are leached waste, surface run off, and overflow from the spillway of the WRD. To minimize the formation of acids and dissolved metal, and for the remediation of the harmful effects of extreme contamination conditions, it is recommended that lime or alkali materials and organic carbon be added to simulate the action of sulfate-reducing bacteria. 相似文献
650.