1、lTBMv ) 刘null 春(中国中铁股份有限公司, 北京null 100000)K1: l 7 TTBM - ila “SlTBM - L ;sS =l 7 TTBM - V;9 - H4 7 TTBM I ny b/ : l 7 TTBMv - ,SEy ! 1 p; -8S / 9 !MHq;4lTBM H I n +,i null y !a anull1 pb1oM: ;l 7 TTBM;v ; -ms |: U 455DS : AcI|: 1672- 741X( 2011) 01- 0018- 03Discussion on Construction of Pilots ofLon
2、g and Large CrossnullsectionTunnelsBored by SmallnulldiameterTBMsLIU Chun(China Railway Group Limited, Beijing 100000, China)Abstract: The sign ificance and targets of p ilot tunnels constructed by sm allnulld iam eter open TBM s are presented, cases ofpilot tunnels constructed by sm allnulldiam ete
3、r open TBM s abroad are listed, the feasib ility to bu ild p ilot tunnels by sm allnulldiam eter open TBM s is analyzed and factors to be considered in the selection of sm allnulld iam eter open TBM s in the connullstruction of pilot tunnels are summ arized. Conclusions draw n are as follow s: 1) Th
4、e concept to bu ild p ilot tunnels bysm allnulldiam eter open TBM s m eets the requ irem ents of the state for the infrastructure construction in term s of environm entprotection and safety; 2) The comprehensive national capab ility and the construction technologies have reached the relenullvant req
5、u irem ents; 3) The features of sm allnulld iam eter open TBM s should be taken into fu ll consideration and the requirenullm ents of rap id bor ing, geology probing and assistance to them ain tunnel construction should be satisfied.Key words: parallel p ilot construction; sm allnulldiam eter open T
6、BM; long tunnel w ith large crossnullsection; advance p ilottunnel0nullSv ,5 Pl 7 TTBM !, GE v TTBM d,2V v ,BH L=jTBM , 6BH55 Pl 7 TTBM !( - ), v?j 0bS =v YGE, -9 7T , | 9 7T b M ,9TBM L b lTBM5,GE , lTBM - , 0bM1 9,z 1 lTBM E,i LM TBMa#FZ)bL 2M ZL+ TBM ZX, S =lTBM15 kmP+ y =( 1941null ), 3, , 1965
7、M8null=: nulllTBMv ) null3nullS =l 7 TTBM - V3. 1nulllTBM VL= ,S =M v , RnullL - ZE, GEbyS = GE / B a !eana ! , - laa ! a 0 a a vB“ 9 iibS = y !El 7 TTBM - ; “ -S = 5 8y, PTBMT 71 M HW,F a a / Z 9lTBM 9F 4b3. 2nullCX ! Pl 7 TTBM -Hqnull nullSE L 989 $ , “aLM y !? Fv,v 9F, a?a a/Y “9F,7 9va / 4,SEy !
8、 a #S1 p b “ - ! Pl 7 TTBM g -/,t -i M X Ei Y -g B,lTBM, v Tz !, X b4null - H4 7 TTBM Iny null null 1)lTBM 7 T !, 7A1 ,=Q vL 1 pK b2)lTBM V - y , H, VM #+ y4 -) ,# R l,5 T bWb 9 VT dL YP1 pb3)l 7 TTBM b , V 5 ,B V430% ! ;N H ! *“d !9 V l;YrT|vv ,9|Yn;1J !,ZL ;5 e, ; ;| vi 7 nbnull nulllTBM,RE Z T,y1
9、j( B = 2. 5m )F z _ z, ? T1, Fz PGE H1 ZL,TBM 7 4 , O TBM !bN, PE Fv Y 4b4)lTBM LEbN HE l TBM # ,A1 H |L4 -) #F bM1 LE ? b5)lTBM vY5LbSTBM ,KY r12. 8km, 5#55 n1G b“ lTBM12) -8S / ! MHq;3)4lTBM H I n +,i null y !a anull1 pb ID( References) : 1 nullz ,.lTBM ELM J.MS !9, 2007 ( 8): 54- 57. ( Y INH uail
10、ian , GONG Yanfeng. Application of extending tunnelm ethod for TBM w ith sm all d iameter in doub lenullline railw aytunnels J . Railw ay Sandard Dsign, 2007( 8): 54 - 57. ( inChinese) ) 2 nullL, 6V, .M ZL+ TBM ZX J.MS !9, 2006 ( 12), 57 -62. 3 null . Z,ZM y !Z J . y !,2008, 28 ( 5 ): 517 - 526. ( W
11、 ANG M engshu. Constructionscheme of taiwan strait subnullsea railw ay tunnel J. TunnelConstruction, 2008, 28( 5): 517- 526. ( in Ch inese) ) 4 null .SM a / bW?Z J. y!, 2010, 30( 4) : 351- 364. (W ANG M engshu. Constructionscheme of taiwan strait subnullsea railw ay tunnel J. TunnelConstruction, 2010, 30( 4): 351- 364. ( in Ch inese) )20 null 隧道建设null null null null null null null null null null null null null null null null null null31 null
