The reinforcing mechanism and features of double pipe and non-shrinkage double liquid grouting technology are showed.

Analysis of site experiment of double pipe grouting reinforcing soft ground

On the basis of a construction sample case of a valley section at left entrance of Wukengba tunnel, this arti-cle introduces the strengthening method of ground surface dual liquid anchor pipe grouting in permeable soft surround-ing rock tunnel with shallow cover and lateral pressure, and analyzes the effectiveness of the strengthening and its strong and weak points as well.

Design and application of new anti-aqueous dispersions and anti-aqueous solubility two-shot grouting material;

Workability and gelling performance of new two-shot grouting material with anti-aqueous dispersion and anti-aqueous solubility;

Traditional cement-sodium-silicate two-shot grouting materials was widely applied to filling, soil stabilization, strengthening and mitigation of water ingress to underground facilities due to its characteristics of rapid and adjustable gel-time and good working performance etc.

Application of double liquid grouting technology to strengthening bridge pile foundation on existing Guang-Shen line;

This article introduces deep foundation pit emergency repair of a high-rise building of Tianjin,using rigid fast-hardening water-stopping material on its negative side and double liquid grouting material on its positive side.

Combined with the construction in the section of water gushing at the entrance of Zhoucangling tunnel,the author introduces that man can achieve the expected effect of water gushing control with the method combining long borehold detection,lead small conduit pre-support with double liquid grouting,which solve the problem of water gushing in tunnel.