爆炸法加固饱和粉细砂地基的试验研究

为探索爆炸法对饱和粉细砂加固处理的效果,在某码头吹填粉细砂地基上进行了爆炸法加固饱和粉细砂地基的现场试验。测得了试验中孔隙水压力的增长和消散过程、地表沉降和静力触探值的变化,分析得出爆炸处理粉细砂地基孔隙水压力的变化具有独特的规律,采用顺序爆炸的方式更有利于地基加固,爆炸能使饱和砂地基达到中密状态,但未能使地基得到均匀加固等一些有益的结论,结论和试验为爆炸法处理饱和粉细砂地基的理论研究和工程应用提供较高的参考价值。

Investigation of Explosions for Water- saturated Granular Ground Improvement

In order to study the effects of explosions for water-saturated granular ground improvement, an investigation in site is carried out in the reclamation by bumping filling of one dock. The process of increment and dissipation of pore water pressure, ground surface settlement, contact sensor values are measured, some specific conclusions such as laws of increment and dissipation of pore water pressure are obtained. To adopt the cyclic explosion mode is favorable to ground improvement, densification of granular ground has progressed to the state of medium compaction by explosion, etc. are presented in this paper. All these conclusions and investigation provide valuable references for design and the theoretical study of explosions for ground improvement.