深厚软基超长防波堤爆炸挤淤快速施工技术  

Rapid construction technology for explosion compaction of ultra long dike on deep-water soft foundation

作　　者：李跟 刘三军 汪高龙 吴义华 LI Gen;LIU San-jun;WANG Gao-long;WU Yi-hua(Lianyungang Mingda Engineering Blasting Co.,Ltd.,Lianyungang 222021,Jiangsu,China)

机构地区：[1]连云港明达工程爆破有限公司,江苏连云港222021

出　　处：《工程爆破》2024年第1期90-95,共6页Engineering Blasting

摘　　要：含有深水较厚淤泥层的软基加固处理难度大,海上施工工况复杂,一直是软基处理工程的难点。在渔港斜坡式防波堤建设工程中,针对淤泥层厚、抛填方量大、防波堤长度大的特点,采用爆炸置换方法进行挤淤施工。防波堤总长2 180 m,抛石量约434万m3,为加快施工速度,构筑了双人工岛施工方法,人工岛尺寸为36 m×36 m,增加了同时工作面。在合拢段采用子堤拓宽法施工,子堤宽度8 m,由内侧向外侧推进完成合拢。经沉降点观测和钻孔取样,防波堤建设取得了较好的质量效果,可为相似工程提供借鉴经验。The reinforcement and treatment of soft foundations on deep-water and thick silt is difficult,and the offshore construction conditions are complex,which has always been a difficulty in soft foundation treatment engineering.In the construction of a sloping dike in a fishing port,the explosive replacing method is adopted due to the characteristics of thick silt layer,large amount of dumping and filling,and large length of the dike.The total length of the breakwater is 2180 m and the amount of riprap is 4.34 million m 3.In order to accelerate the construction speed,two artificial islands with a size of 36 m×36 m were constructed and the simultaneous working faces have been added.The construction of the closure section is carried out using the sub-embankment widening method,with a width of 8m and the closure was completed from the inner side to the outer side.Through settlement point observation and borehole sampling,the construction of the breakwater has achieved good quality results,which can provide reference experience for similar projects.With precise design and strict construction,the construction period and quality of the dike have been guaranteed,providing reference experience for similar projects.

关 键 词：爆炸挤淤 厚淤泥层 双人工岛 合拢口爆破 

分 类 号：O389[理学—流体力学] TD235[理学—力学]