爆破挤淤处理潮间带软土地基效果评价与分析  

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

作　　者：胡永刚 陈文斌 杨善翩 张爱轮 秦伟 张留俊[4] 张志宙 HU Yonggang;CHEN Wenbin;YANG Shanpian;ZHANG Ailun;QIN Wei;ZHANG Liujun;ZHANG Zhizhou(Zhejiang Transportation Construction Group Co.Ltd.,Hangzhou 310012;Zhejiang Provincial Key Laboratory of Engineering and Technology for Soft Soil Foundation and Tideland Reclamation,Wenzhou University,Wenzhou 325035;Jiangsu Southeast Engineering Consulting Co.Ltd.,Nanjing 210018;CCCC First Highway Consulting Co.Ltd.,Xian 710068)

机构地区：[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

出　　处：《土工基础》2023年第4期545-548,共4页Soil Engineering and Foundation

基　　金：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)。

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。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.

关 键 词：爆破挤淤抛填石法 路基沉降 地质雷达 

分 类 号：TU472[建筑科学—结构工程]