爆破挤淤加固潮间带路基原位深层水平位移现场测试分析

Field Tests and Analysis of In-Situ Deep Horizontal Displacement in Intertidal Soft Soils Strengthened by Blasting Replacement Method

爆破挤淤法是一种处理效率高、造价低、处理效果好的软土地基处理方法,常用来处理深厚淤泥质土,其主要施工方式按照炸药埋置位置划分可分为侧爆施工和端头爆施工。对于爆破挤淤法施工效果的评价,其评价爆破挤淤爆破效果最直接的指标就是抛填石的落底深度,为了检测潮间带深厚淤泥层爆破挤淤抛填石效果,依托宁德市某爆破挤淤项目,开展深层水平位移长期监测,分析路基长期水平位移变化,对比侧爆施工段和端头爆施工段的路基水平位移变化,并与对应位置的路基长期竖向沉降联合对比,可以为类似工程提供参考。

Blasting replacement method is a soft soil improvement method with high efficiency,low construction cost and satisfactory treatment effect.Its main construction methods can be divided into side explosion and end explosion according to the position of explosives buried.The most effective evaluation of the blasting replacement application is the measurement of the depth of the riprap rock that are brought into the soft soil by the explosion.In order to detect the intertidal zone and depth of the riprap into the soil,in this paper,based on some blasting replacement projects in the Ningde City,the deep horizontal displacement monitoring was performed for a long time.The results of the side and end the horizontal displacement of blasting replacement projects are also compared with the settlement of the above highway embankemnts.It provides reference for similar projects.