ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2011, Vol. 31 ›› Issue (4): 510-514.
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WEI Yusheng
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Abstract:
Collapse occurred during the excavation of a connection gallery of a shieldbored tunnel of Guangzhou Metro. Programs such as deephole Soletanche grouting executed from the ground surface, triplefluid highpressure jet grouting columns executed from the ground surface and WSS grouting executed from inside the gallery are selected and countermeasures including installing sealing walls in the left tube of the tunnel and filling water into the tunnel are taken, so as to consolidate the backfilled materials in the collapse area and consolidate the ground around the excavation contour. In the end, the strength and permeability of the consolidated ground meet the design requirements, which provides prerequisite for the further excavation of the connection gallery.
Key words: connection gallery, collapse, soletanche grouting, triplefluid highpressure jet grouting, WSS grouting
WEI Yu-Sheng. Discussion on Ground Consolidation Technology: Case Study on a Collapsed Connection Gallery of a Metro Tunnel[J]. Tunnel Construction, 2011, 31(4): 510-514.
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