基于自然边界元法的多孔注浆理论的应用

A Porous Grouting Theory Based on Natural Boundary Element Method

渗透注浆是在不产生水力劈裂的情况下,把浆液注入到粒状土的孔隙中,将土颗粒胶结起来,增强土体的强度和防渗能力。目前,关于注浆理论的方面的研究还比较缓慢,施工现场常常遇到的多孔注浆工艺缺乏理论指导。为此,笔者通过查阅文献,借鉴了一种基于自然边界元法导出的Stokes流问题,在此基础上并对柱面注浆中的多孔注浆问题进行了理论研究,得出了一些有价值的结论。并通过工程案例进行验证试算,结果表明,该方法具有很强的适用性,可很好的预测注浆后的效果。

Permeation grouting is that seriflux inject into porosity of granular soil to cement the soil particle and to enhance the strength and anti-seepage ability of soils without producing hydraulic fracturing. Nowadays, the research on grouting theory makes relatively slow progress. Porous grouting process lacks theoretical guidance as a kind of technology in construction site. Thus the au- thors refer to the Stokes flow problem based on the natural boundary element method and do some research on grouting theory for cylinder grouting. Some valuable conclusions are drawn. And through the engineering case validation trial, the method has a strong applicability, and can predict its effect after grouting.