Abstract：Research purposes: W ith the rapid deve lopments of highw ay and ra ilw ay, more and more tunnels are being and w ill be bu ilt in the mounta in area w ith comp licated geo log ica l conditions w here w as the forb idden zone o f the highw ay and railw ay construct ion in the pas,t w ith more and bigger construct ion diff icu lt ies. It is necessary to do the continuous research on how to rap id ly and e ffect ive construct the tunnel in area w ith complicated geolog ical cond itions and the fault area.
Research conclusions: The so ilmoulding method w as used for construction of Lajishan Tunnel in a co llapse area. The safety and process o f tunnel construction in the cont inuous co llapse area w ere guaranteed by using this m ethod. Rap id filling so i,l form ing closure so ilmo ld, the top stable and consolidated surface of the soilmou ld exceeding the excavation line and synchronically pre- bury ing the p ipes are cruc ia l to disposing co llapse w ith soilmou ld ing method. The genera larch dep th of concrete is mo re than 1m. The construction princip le, construct ion procedure and caut ion presen ted in th is paper for disposing the co llapse can be the reference to construction o f the sim ilar tunnel.
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WANG Xu- x ing. Technology for Disposing Continuous Collapse of Lajishan Tunnel with Soil MouldingMethod. 铁道工程学报, 2011, 28(1): 62-65.
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Gao Shufeng. Construc tion Technology of Large Crosssection Tunne les w ith Shallow Cover and Unbalanced Load of Passenger D edicated Line [ J ]. Journal of Railway Engineering Society, 2008( 10): 32- 35.
Yang Yanling. Construc tion Technology of Soft Rock Deformation Sect ion of Y esanguan Tunne l[ J]. Railw ay Construc tion Technology, 2010( 10): 33- 37.
M a X iaohu.i Surface Geological Investigat ion Technology and Its Application in Tunne l Construct ion under Fault Condition [ J ]. Ra ilway Construct ion Technology, 2010( 9) : 26- 30.
Zou Fuqing. Processing Technology of Rock Fall in Broken Stratum Gully of R ailway Double- line Long Tunne l[ J ]. R ailway Construction Technology, 2010 ( 3): 58- 60.
2011, Vol. 28 
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