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爆破挤淤法处理软土地基作为一项成熟的施工技术,具有施工简单、软土处理充分、施工速度快、工程造价低等特点,针对软土的土性,爆破法一般存在着处理深度的容许限度,超过此容许深度值,爆破落底的效果将难以达到要求。文中以连云港若干工程为例,通过处理防波堤以及码头后方驳岸的爆破工艺,并对工程工后进行钻孔检测和位移监测,确定了爆破技术在深厚淤泥地基中应用的可行性,可为类似工程的设计和施工提供参考。 相似文献
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爆破挤淤法处理软土地基作为一项成熟的施工技术,具有施工简单、软土处理充分、施工速度快、工程造价低等特点。针对软土的土性,爆破法一般存在着处理深度的容许限度,超过此容许深度值,爆破落底的效果将难以达到要求。文中以连云港25万吨级矿石码头工程为例,通过对驳岸采用开挖与爆破挤淤相结合的工艺,并对驳岸工后进行钻孔检测和位移监测,确定了开挖和爆破技术在深厚淤泥地基中结合应用的可行性,可为类似工程的设计和施工提供参考。 相似文献
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爆破挤淤填石法作为地基处理的一种常用方法,广泛应用于沿海养殖围堤、围海造地、护岸以及防波堤等水工工程的淤泥质软土地基处理。在对岱山樱连门促淤围垦工程围堤地基爆破挤淤处理产生的悬浮泥沙输移扩散进行模拟的基础上,分析了爆破挤淤对周围海域的影响。研究结果表明,爆破挤淤所产生的悬浮泥沙的输移扩散受潮流的影响较大,其输移扩散的范围及方向很大程度上取决于爆破后工程区域附近潮流的水动力强度及方向。爆破挤淤后产生的悬浮泥沙浓度增量由于扩散和沉降作用迅速减小,在爆破3 h后基本降至10 mg/L以下。爆破挤淤施工中产生的悬沙对周围的水环境虽然有一定的影响但持续时间并不长,且影响范围有限。 相似文献
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在进行水利水电施工中,爆破开挖技术已经成为对岩石地基施工的基础工作。整体地基建设的质量直接决定了整体水利水电项目工程的质量,在进行爆破开挖时,要按照国家有关标准进行,并且对爆破地区中的地质特点、地形条件、建筑基础设计方案等进行综合的分析。另外,爆破开挖具有一定的风险性,需要在爆破作业之前做好危险源分析工作,并进行严格的爆破测试,从而保证整体爆破开挖过程的安全。文中对水利水电明施工项目的爆破开挖技术的相关问题进行了分析和探讨。 相似文献
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爆破挤淤技术在水工领域已经得到广泛的应用。漳州人工岛填海工程B标段外护岸大部分为深层软基地段,且软土厚度变化大,设计要求采用抛石爆破挤淤法处理软基。根据典型试验段施工及土方平衡分析、钻孔效果检测等,优化调整了爆破设计参数,确保了外护岸堤身的落底宽度与深度,并有效地减少了理坡工程量,是爆破挤淤法用于软土地基上填筑堤坝的成功应用。 相似文献
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文章通过分析讨论大涌浪海况条件下抓斗船疏浚施工过程中存在的风险,结合工程实际,制定相关预防措施,以确保施工过程中安全风险可控,减少甚至杜绝安全事故发生。 相似文献
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吹填淤泥质软土因具有高含水量、流塑状、高压缩性等特征,爆破排淤填石施工方法在处理处理吹填淤泥质软土地基时具有快速、质量易控制、成本费用底等优势,但受施工场地周边构筑物等的影响,爆破工艺参数需要通过试验确定.文中结合连云港西大堤改扩扩建工程实际情况,选取150m作为试验段,通过调整多种爆破参数,产生的不同爆破效果进行比对,证实了爆破排淤填石法在西大堤改扩建工程上的可行性,通过试验确定了大面积施工的主要控制参数. 相似文献
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Yi-Chih Yang 《Maritime Policy and Management》2013,40(7):699-722
This paper evaluates the impact of risk factors from the container security initiative on Taiwan's shipping industry by employing a risk management matrix to identify the severity and frequency of CSI risk factors, and discovers some appropriate risk management alternatives. This paper's findings are as follows: (1) The majority of risk factors have a moderate-risk level, and possible alternative risk management measures include risk prevention, self-retention and insurance. (2) Ensuring a balance between the efficiency of maritime logistics and supply chain security is of vital importance to any trading countries dealing with security risk issues. (3) The government should encourage the private sector to design and market security hardware and software, which will promote the growth of the domestic security industry and generate employment opportunities. 相似文献
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Vinh V. Thai 《Maritime Policy and Management》2013,40(2):147-163
In recent years, the issue of maritime security has become a major concern on the international maritime agenda. One of the issues in this respect is how to enhance security while not jeopardizing organizational efficiency and effectiveness, or to manage security effectively, e.g. facilitating the smooth flows of materials while enhancing supply chain security at the same time. In addressing this issue, we place three cornerstones for the effective management of security in maritime transport: quality management (QM), risk management (RM) and business continuity management (BCM). A conceptual model of effective maritime security, including 13 dimensions and 24 associated critical success factors, is devised following this reasoning. The model was tested through a survey of 119 maritime transport organizations and 25 interviews conducted in Vietnam. Findings support that all proposed 24 factors are valid and should be used as critical factors for success in effectively managing security in maritime transport, in that those involving security incident handling and response are rated as the most important in magnitude, along with security risk assessment, risk-based security mitigation strategies and plans, and senior management commitment and leadership. Managers can use the model designed and tested in this research to develop a checklist of essential components for their company's security management policies, strategies and plans. The use of a universal checklist to evaluate maritime security management would also greatly facilitate benchmarking across organizations in the industry. 相似文献
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从船舶保安所涉及到的机构、人员、法规以及船舶保安计划等方面探讨了船舶保安体系,提出船舶保安的管理模式和流程,概述了船舶保安管理对策。希望对落实相关人员责任,规范保安管理,协调体系要素间的关系,开展保安文化建设,提高船员保安意识,加强船舶保安管理力度,提倡科学管理能发挥积极作用。 相似文献
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Noor Apandi Osnin 《WMU Journal of Maritime Affairs》2006,5(2):195-206
Recently, maritime security issues in the Strait of Malacca have been in the limelight. Statistics highlighting the risk of
piracy faced by shipping in the Strait of Malacca and the possibility of a terrorist attack have led to an enhanced awareness
of the need for heightened security. The declaration by Lloyd’s Joint War Committee (JWC) of the Strait as a “war risk area”
has strengthened the perception that the littoral states have not done enough to make the Strait secure for international
trade. 相似文献