Abstract:
Traditional curtain grouting consolidation is usually adopted for shallow large-profile tunnels in very soft rock interface with rich water, which has the shortcomings of long construction period and high construction cost. While pressurized rotary jet grouting consolidation from ground surface, excavation by parts and steel tube arch abutment as well as proper support parameters were adopted in Zuitou tunnel on Lanzhou-Chongqing railway, considering the geological condition and mined shallow excavation of the tunnel, with rapid, safe and economic construction realized.
ZHOU Ye-1,
XUE Ning-2,
TIAN Ren-Dong-3 etc
.Comprehensive Construction Techniques of Shallow Large-profile Tunnel along Water-rich Soft Rock Interface[J] MODERN TUNNELLING TECHNOLOGY, 2011,V48(2): 125-127