土工基础

土工基础 ›› 2023, Vol. 37 ›› Issue (4): 545-.

• 工程实录 •    下一篇

爆破挤淤处理潮间带软土地基效果评价与分析

胡永刚1，陈文斌1，杨善翩2，张爱轮3，秦伟2，张留俊4，张志宙4   

  1. (1.浙江交工集团股份有限公司，杭州 310012；2.温州大学 浙江省软弱土地基与海涂围垦工程技术重点实验室，浙江温州 325035；3.江苏东南工程咨询有限公司，南京 210018；4.中交第一公路勘察设计研究院有限公司，西安 710068)
  • 收稿日期:2021-11-11 修回日期:2021-11-21 出版日期:2023-08-31 发布日期:2023-08-31
  • 通讯作者: 秦伟（1988-），男，副教授，研究方向为深水基础、地基加固处理等。
  • 作者简介:胡永刚（1980-），男，高级工程师，研究方向为交通土建工程施工管理。
  • 基金资助:
    基金项目：浙江省公益技术应用研究项目（LGF22E080011）；温州市基础性科研项目（S20210005）；浙江省教育厅一般项目(Y202044146）；浙江省教育厅专硕项目(Y202146757，Y202248922）

Evaluation and Analysis of Intertidal Soil Peaty Silt Soil Improvement by Blasting

HU Yonggang1, CHEN Wenbin1, YANG Shanpian2, ZHANG Ailun3, QIN Wei2, ZHANG Liujun4， ZHANG Zhizhou4   

  1. (1.Zhejiang Transportation Construction Group Co. Ltd., Hangzhou 310012； 2.Zhejiang Provincial Key Laboratory of Engineering and Technology for Soft Soil Foundation and Tideland Reclamation, Wenzhou University, Wenzhou 325035； 3.Jiangsu Southeast Engineering Consulting Co. Ltd., Nanjing 210018； 4.CCCC First Highway Consulting Co. Ltd., Xian 710068)
  • Received:2021-11-11 Revised:2021-11-21 Online:2023-08-31 Published:2023-08-31

摘要： 爆破挤淤抛填石法是被用来处理淤泥软土地基、尤其是沿海潮间带深厚软土路基工程建设的常用方法之一。评价该方法的加固效果主要的技术指标为落底深度，依托福建省沿海某爆破挤淤加固路基工程项目，联合地质雷达探测法和长期沉降检测法评价该项目爆破挤淤抛填石构筑路基的效果。通过对比分析可知，地质雷达所探测到的抛填石层落底深度的变化同样也反映在长期沉降检测的累计沉降量报告上，说明用雷达探测与沉降检测结果相互印证，能较好达到评价爆破挤淤路基处理效果的目的。

关键词: 爆破挤淤抛填石法, 路基沉降, 地质雷达

Abstract: Blasting is one of the commonly used methods to improve the thick, soft peaty silt soils, especially for the embankment construction over the thick, soft soils in the coastal intertidal zone. The main technical aspect is to evaluate the improvement depth in the thick and soft cohesive soils. This paper presents a case of an engineering project using the blasting compaction of peaty silty soils in coastal Fujian Province. The effect of the blasting compaction and stone filling for the embankment over thick and soft soils is evaluated by the combination applications of ground penetrating radar and long-term settlement observation methods. Through comparative analysis, it is concluded that the change of bottom depth of rock filling layer examined by the ground penetrating radar is also reflected in the cumulative settlement report of the long-term settlement observation, indicating that the ground penetrating radar detection and settlement observation results confirm each other, which can better meet the purpose of evaluating the improvement effect of the blasting improvement method.

Key words: Blasting Compaction, Embankment Settlement, Ground Penetrating Radar

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