同济大学学报（自然科学版）2017，Vol.45Issue(11)：1592-1601,10.DOI:10.11908/j.issn.0253-374x.2017.11.003
基于SPH的类矩形盾构同步注浆扩散机制及参数获取
Diffusion Mechanism and Parameters Acquisition of Quasi-rectangular Shield Synchronous Grouting using SPH Method
摘要
Abstract
Due to the particularity of heterotype shield,further research need to be executed on grouting diffusion effect and control parameters.This diffusion mechanism and parameter acquisition were studied using smoothed particle hydrodynamics (SPH) for the first quasi-rectangular shield tunneling project in China.The results show that the grout diffusion pattern has an related squeezing filling property in longitudinal and ring direction,and its filling efficiency is poor at top/bottom of the shield;The grout diffusion surface curvature,grouting pressure loss rate,entire flow sealing efficiency and filling uniformity of rectangular grout are better than these situation of liquid grout and thick grout;The disturbance degree of 150％ injection rate for the surrounding stratum environment is minimal,and the optimum effect with grout injection ratio is 4 ∶ 3 ∶ 2 ∶ 1,which reflects in pressure distribution is more uniform;And considering the filling time,it is suggested that the symmetrical hole position is more suitable for synchronous grouting.关键词
类矩形盾构/光滑粒子流体动力学(SPH)方法/数值模拟/同步注浆/扩散机制/参数获取Key words
quasi-rectangular shield/smoothed particle hydrodynamics (SPH) method/numerical simulation/synchronous grouting/diffusion mechanism/parameters acquisition分类
交通工程引用本文复制引用
李培楠,黄德中,朱雁飞,丁文其..基于SPH的类矩形盾构同步注浆扩散机制及参数获取[J].同济大学学报（自然科学版）,2017,45(11):1592-1601,10.基金项目
国家自然科学基金(51378388) （51378388）
上海市科学技术委员会重点科研项目(14DZ1207900) （14DZ1207900）
