开挖与爆破技术在深厚淤泥地基中的结合应用

爆破挤淤法处理软土地基作为一项成熟的施工技术,具有施工简单、软土处理充分、施工速度快、工程造价低等特点。针对软土的土性,爆破法一般存在着处理深度的容许限度,超过此容许深度值,爆破落底的效果将难以达到要求。文中以连云港25万吨级矿石码头工程为例,通过对驳岸采用开挖与爆破挤淤相结合的工艺,并对驳岸工后进行钻孔检测和位移监测,确定了开挖和爆破技术在深厚淤泥地基中结合应用的可行性,可为类似工程的设计和施工提供参考。

Combined Application of Excavation and Blasting in Thick Layer of Silt Foundation

As a mature technology,blasting treatment of soft foundation is a kind of technology that is simple,sufficient,easy to construct,low cost and so on.For the properties of soft soils,blasting law generally works within some depth,and the effect of blasting off the bottom will be difficult to achieve if beyond the allowable depth.In this paper,based on the project about 250 000 tons of ore terminal in Lianyungang Port,the technology of excavation combined with blasting treatment was applied,and the drilling de...