土木工事と地質調査・地盤 ... - earthtech-toyo.com

1 1 . 2 ( ). 3 . 4 .. 17 7 6 . 1 .. 3 3 .. 39 . 3 .. 3 .. 49 . ( ) . ( ).. DDA.. (18000m3) .. 1.. D 2 .. L DEM .. P .. R .. G .. ( ).. M . ( . ) .. N .. J .. Q .. E .. O 3 DDA . 2D 3D . 2 .. 2.. N .. 0 10 20 30 40 50 .. ( 1 ) .. DL .. DM .. DH(D CL) .. CL . CM .. CH .. 0 20 40 60 80 100 . RQD(%).. ( ).. RQD . (Mpa). A >100cm <2cm/min 90% >200 >5km/s . B 40 50cm 2 4cm/min 70 90% >200 4 5km/s CH 10 30cm 2cm/min 10 70% 100 200 >4km/s CM 15cm >3cm/min 30% 50 100 4km/s CL 10cm 10% 25 50 D CL 0% 1 25 D 0% 0%.. 61 11 . 1992.. 3. (m). 1000 .. 10.. 100 . 20m .. 10 .. 1.

2 16m 4m .. 6). 7).. 4. Air Force One 747.. 25mm .. 3 . x,y,z . 3 .. 1/5,000 .. 1/1,000 .. 5.. A ( ). B. A B .. Cost: 300,000.. 6.. 1/5,000 .. 1/1,000 .. 1/5 . 1/20 . Cost: 1500,000/100m2. Cost: 200,000. 7.. W- 3 W- 2. W- W- 5 4. E- 4 W- 1. E- E- 3 1. E- 2.. ( ). ( ).. ( ) .. HP .. 8.. : .. : .. : .. : . 1/5,000 .. : .. 1/1,000 : .. : .. : .. : .. : .. :c .. :c .. : .. ( ).. 75 .. N .. 65 115 .. 15 . 30 .. 9. JACIC .. n i= n .. i .. s i . 50 s 50 15 .. 15 5 . 5 .. ( ) .. 0 y( 0 y) .. m .. m kgf/cm2 .. p kgf/cm2 .. r cm .. m rm m m kgf/cm2 .. 1 m m (cm). 2 . 2 50 o kgf/cm.

3 Y y ' o 3 o .. 4 .. 220m - - .. a b 50mm BPR-553 c d a. b. c. d. e f g e. f. g.. h.. h .. Cost: 40,000/m .. (kgf/cm) ( ) (kgf/cm) ( ).. 25 40 50 45 15 45 . 20 35 45 40 10 40. 35 45 40 5 40. 5 30 40 35 1 37. 1 0 20 30 25 0 0 30 35.. p108.. (kgf/ ) log . N .. + + + . 10.. 1/5,000 .. 1/1,000 .. 2m .. 1mm .. 5mm .. Cost: 200,000/50m 11.. Pointic 2D . Profilic 3D . Realic .. 100 / .. 2 3mm . 4 . 3 . ( ) . 1mm 3 .. Target image on CCD plane .. 1 .. Ex. Result on 3-D coordinates .. Targets are prepared 450 points of object space .. around tunnel wall. target point.

4 1m Take about 100 photos every week.. Comparison before and after. direction & dimension . Camera Nikon D1 2000 1312pixels of deformation .. Fundamental model is a optical triangulation Green cross is calculated center. Perspective transformation from 2-D image coordinates to 3-D object space coordinates 12. 3D . 3 .. CCD .. ( ) .. 310 .. 3 .. : 3 .. 13.. H10-1 .. N60W62N. 340m N65W50N. 320m .. 3 .. 14. ( ).. TBM .. Nagoya Kobe Curremt Meishin highway Lake Biwa Ritto tunnel Nagoya TBM . Kobe Second Meishin highway Osaka .. Geological & geophysical data 335+ 50.

5 335+40. 335+30.. 2 3cm . N30E60S. N40E45S N10W30N. N20W45N N80W90. N80E80N.. 3D . TBM . 15. 1000. 500. 335+55.. 335+40. 80 00. 1500. 1500.. Investigation of strength of discontinuity Rresults of backward analysis of We refer results of tilt test. rock fall in TBM tunnel. ,20 3. ,5.. 500 2500. 1900. 450 1500. 400 1200. 900. 350. 700. 300 550. 250 430. 330. 200 260. 150 200.. 359+00. 357+00. 355+00. 354+00. 350+00. 348+00. 347+00. 346+00. 345+00. 344+00. 341+00. 340+00. 339+00. 338+00. 336+00. 335+00. 334+00. 358+00. 356+00. 353+00. 352+00. 351+00. 349+00. 343+00.

6 342+00. Cohesion 0 KPa and friction angle 37 degree 337+00.. STA.. In case of existence of filling Cohesion 20 KPa and friction angle 30 degree .. Key Block No.. 20.. 28 rockbolts . L= . (L= ).. 10.. Rockbolts .. + 0. +80.. +50. 20 10 0.. 16.. Thank you .. Prekestolen pullpit 17.