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围堤在填海造地工程中占据着重要地位,可有效防止填料的流失,以免对海洋造成污染。结合实例对某工程中围堤的滑动现象进行了分析,造成其滑动的原因有很多,如河水冲刷、淤泥量较大、荷载重、施工延期、淤泥清除不合理等。对此制定了相应的方案,并经过对其中出现问题的修改,最终取得了较好的修复效果。 相似文献
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工程施工技术不但关系着港区未来的生存,而且对围堤安全性发挥了关键作用,围堤工程具备的临海特点,决定了必须对工程施工技术严格管理控制,迅速提高筑堤技术,综合处理地基,研究新型的砌体预制结构。文中围绕港区围堤工程施工技术,主要分析了港区工程围堤施工现状,探讨了曹妃甸港区围堤工程中施工技术的运用,最后对港区围堤工程施工技术发展进行了研究。 相似文献
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围堤工程堤基中会经常存在深槽,给围堤施工增加困难甚至因深槽处理不当发生深槽涮深而无法封堵,导致围堤工程失败。本文结合上海横沙二期促淤圈围工程深槽封堵施工实例,介绍深槽封堵施工技术和施工中应该注意事项。 相似文献
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文章以实际工程为例,首先对填海造地工程项目中安全管理的主要影响条件进行了分析总结,然后对填海造地工程项目中分包安全管理要点进行讨论,并提出了填海造地工程项目中分包安全管理有效的对策建议,预防安全事故的发生,为我国填海造地的发展起到保驾护航的作用。 相似文献
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软土地基海堤施工过程中关键技术难点之一是海堤稳定性控制.恰当的稳定控制标准的确定对于保证围堤工程安全、工程进度、工程质量和控制工程费用具有重要意义.结合舟山金塘大浦口集装箱码头前期工程围堤工程施工现场监测资料,对围堤稳定控制的标准进行探讨.提出围堤施工稳定控制应以深层水平位移作为主控指标,沉降监控指标及孔压监控指标需结合水平位移速率使用. 相似文献
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针对外海孤岛、海域软基及陆域形成多项分项工程条件,以工程土石方总体平衡为原则,进行了上海液化天然气(LNG)接收站陆域形成工程总体设计。设计的海堤结构、陆域形成及地基处理方案既满足LNG接收站较高场地使用要求,且等级高又较经济。可为类似陆域形成工程设计提供参考。 相似文献
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Land Changes and Conflicts Coordination in Coastal Urbanization: A Case Study of the Shandong Peninsula in China 总被引:1,自引:0,他引:1
The coastal zone is an interaction region between land and ocean and an interface of geosphere, hydrosphere, atmosphere, and biosphere, as well as greatly affected by human activities. Driven by economic activities and increased population, urbanization is rapidly developing in coastal zones, and a series of land resource and environmental conflicts have occurred, especially in developing countries at times of economic transition. This article reports a case study of the Shandong Peninsula of East China. We analyze the land-use practices and land cover changes of six cities over a timeframe of nearly a decade. We then review the management conflict issues. The most commonly encountered conflicts fall into three categories: those between expanding constructed land and decreased cultivated land; those between land resource utilization and conservation; and those between increasing demand for land and degrading land quality. All in all, they reflect the fundamental conflicts between short-term economic development gains and long-term food security and ecosystem sustainability. This article puts forward an institutional approach to coordinate these conflicts so as to realize integrated and coordinated coastal management. 相似文献
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在老港区城市化开发改造中,适当的土地一级开发模式能够有效地保证港口企业国有资产的利益最大化.分析沿海港口企业参与老港区土地一级开发的必要性和关键环节,对典型的土地一级开发模式进行比较.建议沿海港口企业应通过设计符合自身情况的土地一级开发模式,积极参与老港区的城市化开发改造. 相似文献
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防城港钢铁项目陆域形成采用大面积填海造地,大面积填海后会对防城湾的纳潮量及海洋环境造成一定影响。
通过对填海面积、纳潮量等方面的比较和分析提出陆域坡顶线的优化设计方案,总结在类似湾口位置和自然条件下陆域坡顶
线设计所需考虑的因素。 相似文献
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Yang Hua 《Coastal management》2013,41(1):59-79
China's national marine development strategy acknowledges that land reclamation problems cannot be avoided. Land reclamation has increased rapidly, leading to many risks—as regards resources, the environment, and social concerns. China needs to implement measures to control these risks. Analysis of current legal regulations on land reclamation reveals paradoxes of legislation at the national level and varying regional legal practices; there is a shortage of effective and coordinated land reclamation regulations in China. Analysis of the factors that affect land reclamation shows that regulation plays a central role in managing land reclamation. And, through an analysis of the deficiencies in existing legislation and by learning from the experience of other countries, we can propose a direction for China's land reclamation legislation. Such reforms could effectively protect China's marine resources, avoid environmental and societal risks, and contribute to coastline protection. 相似文献
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Tao Chen 《Maritime Policy and Management》1998,25(4):289-303
Conventionl wisdom in terms of land utilization has been derived from a micro view—strategies concerning land utilization have been formulated based on the need of terminal operators. The major factors considered are the cost, the manoeuverability, the stacking ability of the yard operating systems etc. Regretfully, they have failed to deal with issues concerning land utilization in a broader aspect. Factors considered from a micro view point cannont explain why there are huge differences in the storage capacity of land, the utilization rate of this storage capacity and varying land productivity achieved among container terminals throughout the world. Few researchers have examined he issues from a macro view point, revealing a lack of far-sightedness. Therefore, they cannot explain the global differences in land utilization among terminal operators. The aim of this paper is to examine this issue from a macro view point and provide principles for terminal development. 相似文献
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Louis M. Rea 《Coastal management》2013,41(1-2):141-159
Abstract The purpose of this article is to describe a program of agricultural land preservation in Carlsbad, California. This program focuses on agricultural subsidies and has been adopted and certified by the California State Coastal Commission and is scheduled for implementation on January 1, 1982. This subsidy program is a variation of development rights transfer. Although no property rights are actually transferred, owners of land designated for agricultural use are subsidized by fees imposed on land designated for potential conversion to residential use. The Carlsbad program is placed into context by means of a brief review of similar proposals which attempt to preserve agricultural land in a fair and equitable manner. The importance of agricultural land preservation is emphasized through discussions of urban development pressure, the significance of agriculture in the Carlsbad coastal zone, and the work of the California State Coastal Commission. 相似文献