文章摘要
周江,陈军,曹广勇,李永彪.无水砂层顶管浆液配方及注浆工艺优化[J].安徽建筑大学学报,2021,29(1):33-37,43
无水砂层顶管浆液配方及注浆工艺优化
Optimization of Pipe Jacking Grouting Technology and Slurry Formula in Anhydrous Sand Layer
  
DOI:
中文关键词: 无水砂层  顶管  注浆工艺  浆液配方
英文关键词: anhydrous sand layer  pipe jacking  grouting technology  sizing instruction
基金项目:国家自然科学基金资助项目 (51474004);企业委托科研项目 (AJ-CXY-FW-18-20-1)。
作者单位
周江 中铁四局集团有限公司市政工程分公司安徽  合肥  230000 
陈军 中铁四局集团有限公司市政工程分公司安徽  合肥  230000 
曹广勇 建筑结构与地下工程安徽省重点实验室安徽  合肥  230601 
李永彪 建筑结构与地下工程安徽省重点实验室安徽  合肥  230601 
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中文摘要:
      针对无水砂层顶管注浆减阻施工注浆工艺及浆液护壁效果不佳导致施工困难等问题,依托乌兰布和 沙漠引水工程,分析了施工现场监测数据,实验室进行了浆液配比试验,对注浆工艺及护壁浆液配方进行优化, 并应用于现场,得出如下结论:优化浆液工况顶力峰值较常规浆液工况下降约 30%,且顶力稳定、可控;优 化浆液工况跟进补浆注浆量峰值较常规浆液工况下降约 80%,且注浆量变化稳定;较常规单项注浆工艺,同 步注浆 + 跟进补浆工艺更适用于沙漠地区长距离顶管注浆减阻施工;改良工艺与优化护壁浆液配方显著提高 了浆液的护壁效果,有效地解决了砂层施工难题。研究结果对类似工程施工有重要的意义。
英文摘要:
      Aiming at the problems such as poor effect of pipe jacking grouting in anhydrous sand layer and difficulties in jacking, relying on Wulanbuhe desert water diversion project,this paper analyzes the construction site monitoring data,carries out the slurry ratio test in the laboratory,optimizes the grouting technology and the slurry formula of the wall protection,and applies it to the field, and draws the following conclusion: the peak value of jacking force under optimized slurry condition is about 30% lower than that under conventional slurry condition Compared with the conventional grouting process,the synchronous grouting + follow-up grouting process is more suitable for the construction of long-distance pipe jacking grouting in desert areas. The improved technology and optimized wall slurry formula significantly improve the wall protection effect of slurry,and effectively improve the slurry wall protection effect,and the problem of sand layer construction is solved. The research results are of great significance to the construction of similar projects.
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