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1.
岩心地质编录是收集和观察研究岩心中所赋存的各种地质信息和地质现象的一项重要的基础性地质工作。本文根据具体实践经验,简要介绍了岩心地质编录工作的3个阶段以及贯穿于编录工作始终的取样工作。  相似文献   
2.
隧洞TBM施工过程中的地质编录   总被引:8,自引:0,他引:8  
TBM越来越多地用于隧洞开挖,有必要对TBM施工地质进行研究,本文从现场施工要求的角度出发,概述了TBM施工特征,以渣料的地质编录为重点,阐述了TBM施工中地质编录方法及应用条件,进而归纳出如何利用各种地质信息指导超前钻探,预测不利地质条件,为TBM施工提供地质依据。  相似文献   
3.
资源与环境模型标准文档库及其与GIS集成   总被引:20,自引:1,他引:20  
岳天祥 《地理学报》2001,56(1):107-112
论述了中国资源与环境模型标准文档库的结构和内容。通过研究总结数学模型及其研究现状发现,中国资源与环境模型标准文档库建设需要完善尚有缺陷的数学模型、创建尚缺少的数学模型;通过归纳现有数学模型与地理信息系统的现有集成方法发现,目前的集成方法不能满足区域可持续发展集成模型的需要,据此讨论了数学模型与地理信息系统有效集成需要深入研究的内容。最后,提出了通过大量案例研究,形成区域可持续发展集成模型和中国资源与环境模型标准文档库2个软件包的可行研究思路。  相似文献   
4.
For construction in rock a thorough pre-investigation is important in order to avoid unforeseen conditions which may delay the work. It is crucial to remember the results from this investigation in the further work, and use the experience from the construction to update the geological prognosis and reduce the uncertainties. Different geophysical methods have proved valuable tools in such investigations. In this work the electrical imaging is evaluated with regards to the method's applicability. The evaluation is done qualitatively by comparing the electrical imaging with tunnel documentation from a tunnel in Southern Sweden. By evaluating the result continuously when making the tunnel a more detailed geological prognosis can be compiled and used in the continued work with the tunnel. The parameters used for the comparison are lithology, Q, RQD, weathering and water leakage. The result was that virtually every change in electrical resistivity image coincides with a change in rock conditions. The general trend was that high resistivity corresponded with good quality gneiss whereas low resistivity corresponds to poor quality rock e.g., high weathering, low RQD, low Q and/or several lithological contacts. The intermediate resistivity is often amphibolites or rock with water bearing fractures. The results were supported by in-situ resistivity measurements inside the tunnel and resistivity logging in a core drilling. Geoelectrical imaging proved to give valuable information for a detailed geological model, which could be compiled for a section where the tunnel had not yet been drilled as a help for planning of the continued tunnel work. As is the case other geophysical methods it is clear that for the interpretation of data a priori information about the geological setting is necessary.  相似文献   
5.
Architecture at the Maya archaeological site of Uxmal in Yucatan, Mexico has been documented since the 17th century by historians, archaeologists, illustrators, photographers, and most recently photogrammetrists. This paper reviews the work of the major contributors to recording of architecture at Uxmal with a particular focus on the 19th century stereophotography of Alice and Augustus Le Plongeon who worked to record all the standing architecture at Uxmal, and the close range stereophotogrammetric projects that recorded the Adivino Pyramid during the late 20th century.  相似文献   
6.
The Shoreline Cleanup Assessment Team (SCAT) process is a tool to assess oiled shorelines and is now an integral component of spill response operations. The key element of a SCAT survey is a systematic documentation using standard terms and definitions of the shoreline in the areas affected by an oil spill. SCAT programs were initially established to provide objective and accurate shoreline oiling information directly to cleanup operations. The role of the SCAT program has since expanded and the information generated by the field teams is used now by planners and decision-makers and to develop shoreline treatment recommendations, to select appropriate treatment techniques, and to establish the level or degree of treatment that is appropriate. This latter point is an integral part of establishing shoreline treatment criteria or standards and treatment end points.  相似文献   
7.
This paper uses the exodus of Cambodian migrant workers from Thailand in June 2014 as a focal point around which to explore Cambodian migrant attitudes towards the systems of documentation and brokerage that influence their movement. From the perspective of Cambodian returnees and their families, it builds on recent work exploring narratives of brokerage by demonstrating how documentation itself — and by extension the legality of migration — is viewed through a contextual lens. Specifically, it argues that documentation is not only viewed according to the formal regulatory framework governing migration between the two countries, but forms part of a more complex structure of influences in which norms of employment and brokerage are equally prominent. From this position, the paper suggests that migrants did not only respond directly to threats of a crackdown by authorities following the 2014 coup, but were additionally influenced by the actions of employers and brokers, whose guarantees of protection — or otherwise — were seen as vitally important in their migration decisions.  相似文献   
8.
Measures to combat illegal, unreported and unregulated (IUU) fishing increasingly seek to constrain access to markets. These measures include enhanced seafood traceability and catch documentation schemes, the blocking of port access and landings, the identification and assessment of vessels engaged in IUU fishing and the prohibition on imports, transhipments or trade of fish products. It is important that such measures are in accordance with international law, including the agreements of the World Trade Organisation (WTO). This article evaluates a range of market-related measures for compatibility with international trade law, including the General Agreement on Tariffs and Trade (GATT) and the Agreement on Technical Barriers to Trade. The law requires measures to be non-discriminatory and, for certain technical regulations, not more trade-restrictive than necessary to achieve a legitimate objective. However, there are exceptions to these rules, including for measures relating to the conservation of exhaustible natural resources or for measures necessary for the protection of animal life or health, public morals, or to secure compliance with certain laws or regulations. While the design of current unilateral measures to combat IUU fishing appears to accord with trade law requirements, this article argues that there is scope for a wider and more collective approach. In this vein, new provisions in the recently concluded Trans-Pacific Partnership (TPP) are identified. The article concludes with recommendations for governments, international organisations, private actors and the global community wishing to take action in this area.  相似文献   
9.
通过简要介绍国内外文献信息资源共建共享服务体系及现状,对比分析了中国地质调查局直属单位地学文献资源状况及中国地质图书馆文献资源现状及利用情况.在此基础上有针对性地提出了中国地质图书馆开展地学文献信息资源共建共享工作的初步思路.  相似文献   
10.
After a catastrophe like an earthquake, one on the most important problems is to provide shelter and housing for the homeless. To this end, it is necessary to decide if a building is still habitable, or if it is has to be renovated or even torn down. A prerequisite for such decisions is the detailed knowledge about the status of the building. Earlier earthquakes revealed problems in the processes of documenting and analysing the building damage, as they demanded much effort in terms of time and manpower. The main difficulties appeared to be because of the analogue damage assessments which created a great variety of unstructured information that had to be put in a line to allow further analysis. Apart from that, documentation of damage effects was not detailed and could only be carried out on the spot of a disaster. The aim of this study is to make an improvement, using combination of Geographic Information Systems (GIS) as a management and data analysis tool and photogrammetry as a documentation method. Photogrammetric data acquisition is achieved using a CCD camera and the digital photogrammetric software package PICTRAN by Technet. The information system part is the GIS package ArcView by ESRI. The combination of rapid data acquisition and GIS offers a quick assessment of the situation and the possibility of its objective and holistic analysis. This is the prerequisite for a quick initiation of appropriate measures to help people.  相似文献   
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