重复扰动下富含水地层的加固技术

The reinforcement technology of water-rich strata under repeat disturbance

随着城市地铁、地下空间、铁路和公路隧道的大规模建设和发展,工程中要面对的各种复杂地层的地基处理及松软地层改良问题越来越多。文章结合广州市轨道交通5号线(大坦沙～中山八盾构区间)2#联络通道塌方后,在重复扰动的富含水地层进行加固处理的成功经验,详细地介绍了采用无收缩双液二重管注浆技术在重复扰动下富含水地层中的注浆加固方法。

With the large-scale construction and development of city subway, underground space, rail and road tunnels, we should face more and more problems about complex formation Of ground treatment and improvement of the soft strata in projects.Combined with the successful experiences of reinforcement in repeated disturbance of water-rich strata after the contact-channel landslides of Guangzhou Metro Line 5 （Datansha-Zhongshan 8 Shield interval） 2 #, this paper introduces grouting reinforcement method using the no shrinkage pairs of liquid 2 repipe grouting technology of water-rich strata under repeated perturbations in detail.