共查询到20条相似文献，搜索用时 203 毫秒
1.
江苏省地质调查研究院承担的淮安地区多个岩盐矿、芒硝矿矿山地质环境保护与治理恢复方案通过评审,为淮安做好矿山地质环境保护与治理恢复工作提供了相关技术支持。矿山地质环境保护与治理恢复是矿产资源开发利用的重要组成部分。通过对淮安市多个盐矿矿山地质灾害、含水层、地形地貌景观以及土地资源等方面的评估,提出了相应的矿山地质环境保护与治理恢复措施。 相似文献
2.
四川眉山芒硝矿主要环境地质问题与防治对策 总被引：1，自引：0，他引：1
眉山市芒硝矿开采和生产过程中的主要环境地质问题是矿区地下水和地表水疏干、污染及矿区土壤污染等,影响了矿山及附近居民的生产生活,威胁了人民的身体健康。本文在芒硝矿山环境地质问题调查的基础上,针对存在的主要问题,提出了防治措施。 相似文献
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任静 《沉积与特提斯地质》2013,33(1):109-112
本文综述了近二十年来中国对芒硝矿的地质研究进展,包括芒硝分类、沉积环境、成因以及在地质上的作用等。芒硝矿的成因和成矿理论研究是当前芒硝矿研究的重点。 相似文献
4.
淮安盐矿下关矿区岩盐矿床地质特征与水溶开采 总被引：1，自引：0，他引：1
淮安盐矿下关矿区岩盐矿床地质特征与水溶开采黄书城淮安市矿产资源管理办公室，淮安，２２３２０１ＧｅｏｌｏｇｙｏｆＸｉａｇｕａｎＲｏｃｋＳａｌｔＢｌｏｃｋｏｆＨｕａｉａｎＳａｌｔＤｅｐｏｓｉｔａｎｄＳｏｌｕｔｉｏｎｍｉｎｉｎｇ￥ＨｕａｎｇＳｈｕｃｈｅｎｇ... 相似文献
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青藏高原秋里南木湖盐类沉积韵律 总被引：4，自引：0，他引：4
盐类沉积韵律对研究湖泊环境及气候变迁有重要意义。对青藏高原秋里南木湖发现的芒硝、粘土和原生硼砂的韵律沉积进行了沉积速率和沉积韵律的分析。从物质来源、地貌和气候变化3个方面讨论了韵律形成的机制。在此基础上，利用矿物组成、年代、孢粉资料讨论了沉积物所反映的气候环境变化。结果表明，充足的物源和封闭的地貌环境是沉积韵律形成的物质条件，气候变化是主要外部动力。沉积韵律所反映的气候环境变化为：20.6~20.5 ka BP无芒硝，植被发育，气候相对温暖湿润；20.5~11.4 ka BP芒硝层很厚，植被类型过渡至以蒿为主的荒漠草原，气候干冷。其中，20.5~17.5 ka BP气候极端干旱寒冷，17.5~17.1 ka BP，15.9~15.2 ka BP和14.1~13.4 ka BP气温回升；11.4~10.1 ka BP芒硝层很薄，植物种类丰富，气候显著变暖；10.1~7.5 ka BP芒硝层厚度增加，木本植物花粉进一步降低，盘星藻消失，气候变冷；7.5~4.97 ka BP芒硝层厚度减小，但厚薄不一，植被过渡到以蒿为主的典型草原，气候相对暖湿，但冷暖交替频繁，其中7.0~6.2 ka BP蒿含量下降，湿生植物含量增加，气候冷湿，6.2~5.2 ka BP耐干旱、盐碱植物增加，禾本科消失，湖水盐度增加，气候冷干。 相似文献
6.
常德境内现已发现矿藏近90种，探明储量的20多种，其潜在价值达4400多亿元。石膏、石煤、磷矿、石英砂、膨润土、水泥灰岩、芒硝、海泡石、雄磺等非金属矿产储量丰富，在全省乃至全国都占有重要的地位，该市现有持证矿山企业440余家，从业人员达54000多人，年产矿石3000多万吨，一大批以石膏、芒硝、煤、食盐和磷化工等为支撑的建材、 相似文献
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达拉特旗芒硝矿是世界上罕见的特大型优质芒硝矿,赋存于中更新统中段、上段地层中。共有矿体(层)3个,分别为I、II、III矿体(层),呈层状近平行产出。其中以I矿体(层)为主,其平均厚度为13.89 m,厚度变异系数为43.23%;Na2SO4平均品位为33.81%,品位变异系数为12.65%。矿层结构较简单,夹层数量较少。矿石由可溶盐与水不溶物(泥沙)组成,其中可溶盐99%由Na2SO4·10H2O组成。另外,本文从盆地和水系的发展史、物质来源、古气候、古地理等方面,对矿床成因进行了初步分析探讨,认为达拉特旗德胜太芒硝矿属第四纪掩埋型-内陆湖相蒸发-化学沉积芒硝矿床。 相似文献
9.
大浪滩矿区系以钾为主的盐类矿床，属硫酸盐型的现代盐湖沉积矿床。其中上更新统至全新统（Q_3 4），分布于区内所有盐滩和凹地中，为石盐芒硝夹含石膏淤泥层，地表为含砂石盐壳，局部含有石膏晶片和表外钾矿层。全新统（Q_4）的沉积物以石盐为主，次为芒硝、泻利盐、白钠镁钒、钾石盐和光卤石、水氯镁石，是该区内的主要含钾层位。下更新统（Q_1 2）的岩性主要为灰黄色薄至厚层砂质泥岩和泥岩互层，部分地段有少量厚层与薄层砾岩、泥灰岩、部分地段夹有较多的盐层。 相似文献
10.
自1958年以来,江苏省煤田地质勘探第三队、华东石油地质局第六普查勘探大队、地矿部第三地质大队、化工部钾盐地质大队等地勘单位,在淮安地区进行地质工作中先后发现了淮安盐矿,迄今为止,已有十几口井见矿,岩盐分布范围约800Km~2,已控制岩盐远景储量1×10~(11)t 以上。一、淮安盐矿地质概况淮安盐矿位于苏北坳陷淮阴凸起内。淮安盐矿区主要发育地层有白垩系上统浦口组和赤山组,浦口组按其岩性特征分为三段,即浦一段、浦二段、浦三段。浦二段为主要含盐段(表1)。 相似文献
11.
Malin Andersson Rolf Tore Ottesen Morten Jartun Ola Eggen Ann-Christine Enqvist 《Applied Geochemistry》2012
Work reported in this paper suggests that there are cases of contamination of soil and water samples by polychlorinated biphenyls (PCB) from paper and plastic packaging. Soil samples, which have been stored in paper bags for more than 20 years, share a similar congener distribution as the bags. Analyses showed a predominance of light congeners. PCB-analyses of water also indicate that water samples could be contaminated by plastic packaging. All analytical results of solid material packaging, as well as soil stored in the packaging, show a high relative amount of light weight PCB congeners. The paper bags that were analysed are made of strong paper and very popular among geochemists because of their watertight quality. These paper bags were manufactured more than 20 years ago. The plastic packaging that was analysed was produced in 1997 and 2008. The analyses of plastic and paper show that the raw material that has been used in the production at different times contains a wide concentration range of PCB. Re-sealable plastic bags, which contained the highest levels of PCB of the plastic material, are used by researchers world-wide as sampling bags for soils and sediments. This paper raises an important issue that packaging may potentially contaminate the samples that they hold. 相似文献
12.
阐述了某钢铁厂冶炼炉渣堆放场中渣的放射性元素含量及照射量的规律性 ;铁合金厂钒铁冶炼贫渣的物理化学性质和矿物组成特性 ;并对它们作为水泥、肥料生产和筑路工程中的原材料及有用组分回收等方面的开发利用进行了探讨。 相似文献
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14.
区域地球化学异常系统评价的思路与方法 总被引：4，自引：0，他引：4
在深入分析我国现行区域地球化学异常综合评价方法存在的某些不足的基础上，提出了以系统论为指导的、以异常形成机制分析为基础的区域地球化学异常系统评价的思路与方法。并以陇南地区的金异常评价为例，对该评价体系的具体思路与方法作了系统介绍。 相似文献
15.
Jacques Lévy 《GeoJournal》1998,46(4):279-283
The paper initially describes some of the most important historical processes that have conditioned France's geopolitical position in the contemporary world. It discusses the current changes in France's geopolitics as a changing reality of international relations and as a changing discourse of scholars and experts, that reflects those real world changes. The paper focuses on French politics in Africa and on France's policy in Europe after the end of the Cold War. In Africa the French post-colonial empire with its close ties between domestic regimes, French business interests and the French state becomes unsustainable after the bipolar rivalry has been suspended. In Europe French policy can no longer be presented as either an independent view among a series of others (Europe des patries) nor as a successful effort to press French views by way of a larger European entity. The paper presents an overview of geopolitical literature written in France as a reflection of these conditions. 相似文献
16.
火山岩油气藏的研究一般以陆上喷发沉积的火山岩体为主,事实上全世界四分之三的火山活动是在水下发生的,只是水下喷发沉积的火山岩在各个方面的研究还比较少,在勘探中尚未引起注意。本文以三塘湖盆地石炭系火山岩油藏为例,对比分析了陆上与水下喷发沉积形成的火山岩在岩性、颜色、结构构造以及储集空间特征和地震反射特征等方面的差异,指出了三塘湖盆地石炭系哈尔加乌组火山岩为水下喷发环境形成。通过对研究区两种类型的火山岩油藏系统的研究,总结出了水下喷发沉积的火山岩储层的形成机理以及其形成规模油气藏的条件,为今后的火山岩油气藏的勘探指出了新的方向。 相似文献
17.
The paper deals with the coalbed methane gas-bearing characteristics such as the gas content, theoretical gas saturation, gas concentration and abundance, as well as coal reservoir characteristics such as the adsorption, desorption and permeability of China's coal reservoirs. The paper also introduces the resources of coalbed methane with a gas content ≥4 m3/t and their distribution in China. 相似文献
18.
赤道偶极剖面法在探测路基岩溶洞穴中的应用 总被引：2，自引：0，他引：2
阐述了赤道偶极剖面法在探测铁路路基岩溶洞穴中的应用效果;通过正演理论计算和物理模拟实验,说明该法的异常明显、可靠,反演解释准确,并给出了选择最佳极距的原则.应用实例表明该法效果好. 相似文献
19.
笔者在工程地质实地调查和已有资料梳理的基础上,发现略阳城区工程地质的总体环境较差,褶皱构造和断裂构造明显,滑坡和崩塌等不良地质灾害现象严重。经分析提出了交通类工程施工中,避让和整治相结合的防治措施。 相似文献
20.
Timothy Andrew Stojanovic Hugh D. Ormerod Smith Christopher F. Wooldridge 《GeoJournal》2006,65(3):165-176
Thirteen years since the EU Habitats Directive (1992/43/EEC) became a binding legal agreement, this paper considers the implementation
of this important European environmental legislation as it applies to the coastal activities of seaports and harbours. The
paper examines the relationship between environmental legislation and ports policy, and seeks to provide a comprehensive assessment
of the policy and science that has been developed in relation to protected areas and port management. The paper reports the
results of a survey of European port professionals, and their perception of the successes and challenges of the management
regimes that have been established, as well as their opinions on how these have influenced the management within ports. The
paper also provides a detailed examination of the scientific and technical developments with particular regard to dredging
and habitat management in European ports. Key research gaps are identified, including: practical approaches to licensing procedures;
lack of baseline information, especially with regard to in-combination effects; the efficacy of techniques for mitigating
the impacts of dredging; and greater understanding on how more resilient models for collaborative action can be developed.
The paper will be of use to environmental planners, scientists, regulators, conservationists, and port managers, as they consider
how to apply science and management to the sustainable development and environmental protection of coastal areas. 相似文献