Settlement calculation and analysis of embankment with squeezing thick silt by blasting

XU Xue-yong; CHEN Guo-hai; WANG Ren; DI Sheng-jie; DU Wen-bo

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Settlement calculation and analysis of embankment with squeezing thick silt by blasting

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- Settlement calculation and analysis of embankment with squeezing thick silt by blasting
- Vol. 35, Issue S2, (2014)
- 作者机构：
  
  1. 中国电建集团华东勘测设计研究院有限公司,杭州,310014
  2. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉,430071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TV411
- Online First：12 November 2014，
  
  Published：2014
- 稿件说明：
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XU Xue-yong, CHEN Guo-hai, WANG Ren, et al. Settlement calculation and analysis of embankment with squeezing thick silt by blasting[J]. 2014, 35(S2).
DOI：

XU Xue-yong, CHEN Guo-hai, WANG Ren, et al. Settlement calculation and analysis of embankment with squeezing thick silt by blasting[J]. 2014, 35(S2). DOI：

摘要

爆破挤淤技术在海洋围垦和潮汐电站等工程堤坝建设中发挥着重要作用，随着海洋工程的不断推进，堤坝修建需要处理淤泥(软基)厚度在逐渐加深，在超过12 m的深厚淤泥中往往采用“悬浮式”堤坝结构，对该种堤坝结构开展沉降计算与分析有着重要的意义和应用价值。以惠州港兴盛油库护岸工程为工程实例，分别采用传统沉降计算方法、基于多孔介质渗透理论的考虑浮力作用沉降计算方法及数值模拟方法，对其爆破挤淤形成的“悬浮式”堤坝开展沉降计算，并与实际监测结果对比验证，分析几种沉降计算方法的适用性和合理性。研究表明，传统沉降计算方法得到的沉降值比实际监测值明显偏大，不适合于“悬浮式”堤坝沉降计算；考虑浮力作用方法和数值模拟方法的计算结果较为接近实际监测值，可用于“悬浮式”堤坝沉降计算。

Abstract

Blasting squeezing silt technology plays an important role in the marine reclamation and tidal power station seawall project construction. The thickness of soft clay that needs to be dealt with is gradually deepening with the continuous advance of marine engineering progressing to offshore and underwater shoals. The suspended seawall structure appears when soft clay is more than 12 m deep. Therefore

it is of great importance and of application value to carry out the settlement calculation and analysis. Taking Huizhou port depot revetment project for example

traditional settlement calculation method

the settlement calculation method considering buoyancy and numerical simulation method were applied to carry out settlement calculation; their results are compared with the actual monitoring results. Furthermore

the applicabilities and rationalities of these three methods are analyzed. It is shown that

the results of traditional settlement calculation method are significantly larger than the actual ones

it may not be suitable for suspended seawall; while the settlement calculation method considering buoyancy and numerical simulation method are suitable for suspended seawall because the calculation result are closer to the actual situation.

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