摘要
文献检索表明:目前国内外还没有一个能较准确地计算牛顿流体柱-半球面渗透注浆形式扩散参数(如半球体部分扩散半径与柱体部分扩散高度等)的理论公式,导致理论远滞后于工程应用。以牛顿流体流变方程及渗流运动方程为基础,研究了牛顿流体柱-半球面渗透注浆形式半球体部分扩散半径与柱体部分扩散高度的理论计算公式;分析了牛顿流体的流变性、注浆压力、地下水压力及配置流体的水体温度对牛顿流体柱-半球面渗透注浆形式半球体部分扩散半径与柱体部分扩散高度的影响;并设计注浆试验对其进行验证。结果表明:由牛顿流体柱-半球面渗透注浆形式半球体部分扩散半径与柱体部分扩散高度的理论公式计算得到的半球体部分扩散半径和柱体部分扩散高度理论值与注浆试验实测值间虽有30%左右的差异,但它们都处于可接受误差范围内。因此,研究成果可为实际注浆施工提供理论支撑与指导作用。
The retical formula of diffusion parameters of Newtonian fluid based on column–hemispherical penetration grouting is not existence, such as, diffusion radius of hemispheroid, diffusion length belongs to cylinder etc; so it lag far behind the actual grouting engineering. In this study, according to combining with the rheological equation and seepage motion equation of Newtonian fluid,theory formula of diffusion radius of hemispheroid, diffusion length belongs to cylinder based on column–hemispherical penetration grouting were deduced. Relationships between some grouting factors and them based on cylindrical penetration grouting, such as,rheology of Newtonian fluid, grout pressure, groundwater pressure and water temperature of configuration cement, were analyzed theoretically. What's more, they were validated by means of designing grouting verifying experiments. Experimental results show the theoretical diffusion radius of hemispheroid, diffusion length belongs to cylinder calculated by the formula of diffusion parameters of Newtonian fluid based on column-hemispherical penetration grouting have about 30% of the differences with the actual measurement diffusion radius by grouting experiments; but they are all within the acceptable error limits. Therefore, research achievements may not only provide strong theoretical basis for perfecting the penetration grouting mechanism, but also play a reference guiding role for the theoretical research, design and construction on grouting technique.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2014年第S2期17-24,共8页
Rock and Soil Mechanics
基金
国家自然科学基金(No.51064012
No.51264018
No.41402272)
云南省省级人培项目(No.KKSY201421016)
云南省教育厅科学研究基金重点项目(No.2014Z031)
关键词
牛顿流体
柱-半球面渗透注浆
半球体部分扩散半径
柱体部分扩散高度
Newtonian fluid
column–hemispherical penetration grouting
diffusion radius of hemispheroid
diffusion length belongs to cylinder
