高压喷射注浆法产生的超孔隙水压分析

The Analysis of Excess Pore Water Pressure Generated by High Pressure Jet Grouti ng

摘要:

介绍了高压喷射注浆法的作用机理 ,探讨了在施工过程中高压喷射注浆法引起的超孔隙水压。根据半无限土体中小孔扩张问题的解 ,分析了在超孔隙水压作用的瞬时 ,土体中的应力、变形等 ,并提出了经验公式。结合一具体工程事故的成功处理 ,验证了所建议超孔隙水压公式的可行性 ,同时提出了减少超孔隙水压的对策和方法。

Abstract:

In this paper, the mechanism of high pressure jet grouting has been introduced. Excess pore water pressure generated by high pressure jet grouting during construction was investigated. On the basis of cavity expansion theory, the formulae of excess pore water pressure has been proposed, and the stress and strain of soil had been analyzed. Through an engineering example, the formulae of excess pore water pressure was verified.