Abstract：
The characteristics of weathered granite stratum are described, and the tunnel sections are classified based on the stratum types. The construction risks of the shield machine operated in the following five typical strata are analyzed, i.e. stratum inclining to mud cake, stratum with boulders, stratum with soft upper part and hard lower part, hard rock, and stratum with rich water. Based on the construction practice of the Guangzhou Metro line 3, the countermeasures against these risks and effects are studied, which can be taken as a reference for the similar project.
.On Construction Risks of a Shield Machine Operated
in Weathered Granite Stratum and Its Countermeasures[J] MODERN TUNNELLING TECHNOLOGY, 2013,V50(3): 17-23
2013, Vol. 50 