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1、evaluation of scientific development. Nature security type-nature security is to maintenance people of health value for target, through strengthening security based management, and risk management, and equipment management and technology supervision, ensure production in the people, and real, and sy
2、stem, and system, elements security reliable, and harmony unified, full control various against factors, achieved thought no slack, and management no empty document, and equipment no hidden, and system no blocked, and unit zero non-stopped. Quality and efficiency-quality benefit is to adhere to the
3、enterprise survival, profit and development business truth, adhere to the all activity is economic activity, all costs can be controlled, money should not be wasted management philosophy, management analysis, to improve management quality, improve cost control capacity and market competitiveness. In
4、novation of science and technology-science and technology innovation is to play the role of science and technology as the primary productive force, active use of new technologies, new materials, new processes, new equipment, increase investment in science and technology, strengthening scientific and
5、 technological training, speeding up transforming scientific and technological achievements, forming a number of proprietary technology, enhancing core competitiveness. Resource-saving-the-resources saving enterprise was to reduce coal consumption, water consumption, electricity at the core, enhance
6、 the operation of lean management to realize low consumption, high efficiency, reduce production costs. Second is to strengthen the business, financial, material, information and the optimization of organization and management, saving the internal transaction costs. Harmonious development of harmoni
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8、eighbors better. (B) XX 2013 five enterprises building intrinsic safety power company goals are: unplanned outage 0 times. Class of disorders 0, 0 is equivalent forced outage rate. No personal injury accident, material and equipment accidents do not occur, no fire, no environmental pollution acciden
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10、ystem to realize information resources sharing; to expand the breadth and depth of the portal system, information system of Enterprise Management Assistant role to play; to improve the day-to-day operation and maintenance operation record of promoting causes and transfer system; to strengthen the tr
11、aining工程经营科技项目可行性研究报告项目名称： 超长步距爆破挤淤施工工艺研究 编 制 单 位 ： （公章）项目起止期限： 2012 年 4 月至 2013 年 3 月编报日期： 2012 年 4 月 8 日目 录1.项目研究背景及必要性41.1.研究背景41.2.研究的必要性41.3.研究目的52.国内外研究现状52.1.国内外研究现状52.2.主要参考文献73.项目依托工程概况74.项目研究实施方案84.1.拟解决的关键技术问题84.2.实施的具体内容及方案84.3.拟采取的技术路线165.考核目标和技术经济指标165.1.具体的考核目标165.2.技术经济指标176.项目研究开发进度
12、177.项目承担单位概况187.1.项目承担单位概况187.2.项目主要参加人员情况188.研究经费预算及资金筹措情况198.1.项目总经费和年度预算经费198.2.资金筹措及拨款计划209.项目预期目标及经济、社会效益评估209.1.预期成果209.2.预期目标209.3.经济、社会效益20附表1 编写人员名单22附表2 编写单位意见231. 项目研究背景及必要性1.1. 研究背景爆破挤淤是软基处理的一种新技术，是通过爆炸冲击作用降低淤泥结构性强度，同时利用抛石体本身的自重使爆前处于平衡状态的抛石体向强度降低处的淤泥内滑移，达到泥、石置换的目的。爆破挤淤处理加固地基的基本原理是在堤头一定位置
13、的淤泥内埋置药包，药包爆炸将淤泥向四周挤出并向上抛掷形成爆坑，堤头抛石体在爆炸空腔负压和重力作用下定向滑移落入爆坑并形成石舌，瞬时实现泥石置换。同时，药包爆炸产生的冲击波和振动还使爆源附近一定范围内的淤泥受到强烈扰动，物理力学性能参数急剧下降，承载能力迅速减弱至几乎完全失去，抛石体在自重作用下进一步滑移或下沉；后续堤头药包爆破的多次振动作用将加速堤身下沉落底；爆破振动效应使抛填块石相对移动，堤身石料密实度增加，使堤身后期沉降减小。如今，爆破挤淤广泛用于防护堤、围堰、护岸、驳岸、围堤、码头、造船厂滑道等的工程淤泥软基处理。其适用的地质条件为淤泥软土地基，置换的软基厚度一般为425m，循环步距一般
14、为47m。对于淤泥厚度小于4m时，可与抛石挤淤、强夯挤淤比较后择优使用，大于25m时，须进行论证。1.2. 研究的必要性我国沿海地区多为的海积淤泥质土层, 如要清除进行基础处理，不仅造价高，而且技术难度大；而爆炸挤淤法技术具有施工干扰小、施工速度快、造价低及沉降量小等特点，因而可缩短工期，提高工效。目前爆破挤淤技术循环步距多为4.07.0m，这也与水运工程爆破技术规范(JTS 204-2008)基本相符。步距超过7.0m时，抛石层底部的淤泥可能被包裹无法挤出，造成泥石混合层过厚，后期沉降量大等问题。实际上，步距应根据水深、水流、泥厚、堤高以及外部环境等因素综合考虑来确定。已有的工程实践表明，步
15、距超过8.0 m是可行的。通过超长步距爆破挤淤施工工艺的研究，能够显著提高爆破挤淤筑堤的施工效率，减少堤上各工序的相互干扰，有效的加快施工进度，经济效益极其显著，具有极好的应用前景。1.3. 研究目的结合赣榆县滨海新城围海造陆工程爆破挤淤的工程实践，在分析爆破与抛填步距的确定原则基础上，探讨超长步距推进的施工技术工艺研究。通过本次技术研究，提高爆破挤淤的施工效率，降低工程成本，为今后实施超超长步距爆破挤淤工程提供理论依据，进一步提高我局在软基处理方面上的竞争力，同时为国民经济发展做出重要贡献。2. 国内外研究现状2.1. 国内外研究现状近年来，随着爆破挤淤技术的不断发展，早期建立在几何相似基础上的“爆炸排淤填石”等方法逐渐过渡到以强度相似理论为基础的“爆炸定向滑移”方法，循环步距的确定原则和方法也相应发生了改变。“爆破排淤填石法”中，爆坑的大小决定了泥下石舌的大小，爆后石料补抛填超过石舌范围时会在堤身形成淤泥夹层，影响堤身质量。因此循环步距的长短与爆坑的大小有关。受单个药包重量和埋药深度的限制，泥下爆坑的直径通常不超过7.0m，这与相关规范中给出的循环步距不超过7.0m 的结论相符。“爆
