GROUT APPLICATION STATUS AND PROSPECT IN CHINESE SUBWAY CONSTRUCTION BY SHIELD METHOD

摘要

In recent years,with the rapid development of China's economy,urban infrastructure has been developed vastly in China,especially the subway construction has bring great effect for Chinese travel.Due to the many advantages of shield construction method,China subway builders have chosen it as one of the main methods in the subway construction.As an important tache in subway construction in,the grouting is of great significance for subway construction.Especially,subway is mostly constructed in the ground of densely populated cities where settlement may lead to serious consequences,grouting for settlement control plays a crucial role.Therefore,China's subway builders have done a lot of research and practice about grouting.This paper gives a brief introduction to the subway shield method grouting material concept,function and classification,a total of 14 shield method subway construction in seven Chinese city have been analysed about grouting material,the application of grout of shield in China has been summarized,and the existing problems and its prospect has been put forward.