ELSEVIER GEO-ENGINEERING BOOK SERIES VOLUME 5 Part 6 pps

... (surface) 25 30 55 0. 45 Elevated (super structure) 100 30 130 0. 75 Long span bridge 250 30 280 0.90 Cut and cover 100 to 200 40 140 to 240 0.70 to 0.80 Tunnelled 150 to 50 0 50 200 to 55 0 0. 75 to 0.90 Tunnelling ... advance Favorable ground 50 60 m/month 200–700 m/month 350 –800 m/month 150 –300 m/month 50 0– 150 0 m/month Unfavorable ground 7–10 m/month 50 60 m/month 75 150 m/...

Ngày tải lên: 08/08/2014, 13:21

... equations (6 .5 6. 7) respectively. RMR = 5. 4 ln Q + 55 .2 (6 .5) RMR = 5lnQ + 60 .8 (6. 6) RMR = 10 .5 ln Q + 41.8 (6. 7) Evaluation of all the correlations, given in equations (6. 3) through (6. 7), on ... (60 %) Maximum value (30%) Weighted average RQD 25 65 85 67 J n 12 9 – 9.42 J r 1 .5 3 4 2. 05 J a 4211.9 J w 0 .66 1 1 0. 966 SRF 7 .5 5 2 .5 4 .5 observed parameter,...

Ngày tải lên: 08/08/2014, 13:21

... and Metallurgy, London, Chapters5&9. Rabcewicz, L. V. (1 964 –19 65 ) . The new Austrian tunnelling method. Water Power, Part I, 1 964 , 453 - 457 ; Part II, 1 964 , 51 1 -51 5; and Part III, Jan. 19 65 , 19-24. Rabcewicz, ... (MPa) (1) (2) (3) 0 .5 2.7 0. 86 1 2.2 0.7 2 1 .5 0.4 75 3 1.2 0.38 4 1.0 0.317 5 0.8 0. 25 0123 4 56 0.2 0.4 0 .6 0.8 1.0 Boundary Conditions Tunn...

Ngày tải lên: 08/08/2014, 13:21

... to 15 cm 10 to 15 cm Rock bolt as required (1.2 to 1.8 m center to center) xii Contents 5. 3 Updating the Q-system 58 5. 4 Collection of field data 59 5. 5 Classification of the rock mass 61 5. 6 Estimation ... 238 References 239 15 Tunnelling machines 241 15. 1 General 241 15. 2 System’s mis-match 241 15. 3 Tunnel jumbo 242 15. 4 Muck hauling equipment 244 15. 5 Tunnel boring...

Ngày tải lên: 08/08/2014, 13:21

... >30 0.0 25 1 .5 2 m ≤ b 40–10 5 14 >10 >1 .5 0. 05 ≤ 2 40–10 5 14 >10 <1 .5 0. 05 1 .5 2 m 2 40–10 5 14 >10 >1 .5 0. 05 1 .5 2 m 2 40–10 5 14 >10 <1 .5 0. 05 1 .5 2 m 20–30 mm 2 40–10 15 23 ... 0. 05 1 .5 2 m ≤ 2,3 b 40–10 15 23 >10 0. 05 1 .5 2 m 50 –100 mm 2,3 c 40–10 9– 15 0. 05 1 .5 2 m ≤ 2,4 b 40–10 15 40 >10 0. 05 1 .5 2 m ≤ 2,3 ,5 b...

Ngày tải lên: 08/08/2014, 13:21

... new discontinuities Less discontinuities induced in good quality rock mass 4,1 4,2 4,3 4,4 4 ,5 4 ,6 5, 1 5, 2 5, 3 5, 4 5, 5 5, 6 6,1 6, 2 6, 3 6, 4 6 ,5 6, 6 Larger caverns may be created in better quality rock masses Fig. 13.2a ... Springer-Verlag, 6, 189-2 36. Dube, A. K. and Singh, B. (19 86) . Study of squeezing pressure phenomenon in a tunnel – Part I and II. Tunne...

Ngày tải lên: 08/08/2014, 13:21

... separation. 9. 11 860 –11917 1230 50 67 6 1 .5 3 1 2 .5 2.2 45 33.2 66 .4 24.7 104.9 2.7 0 .63 Heavy burst Mod. slabbing with noise 10. 12044–12070 1180 42 70 62 212 .54 . 755 31.9 63 .7 31 .6 1 75. 9 2.0 0. 36 Heavy ... noise 13. 12223–12 267 1100 42 75 42212 .57 .54 5 29.7 59 .4 37.0 108.7 1 .6 0 .55 Heavy burst Mod. slabbing with noise 14. 12273–12322 1090 50 70 43312 .57 ....

Ngày tải lên: 08/08/2014, 13:21

... mix. Mean aggregate size 6. 35 mm Mean aggregate size 10 mm S. No. Material Quantity, kg/m 3 Quantity, kg/m 3 1. Cement 4 46 55 8 >4 45 2. Blended sand 6. 35 mm maximum size 1483– 167 9 69 7–880 3. 10 mm ... quality designation (RQD) 60 –100 % 25 60 % < 25% 5. (a) Joint formation Moderately jointed to massive Closely jointed Very closely jointed (b) Joint spacing >0.2m 0. 05...

Ngày tải lên: 08/08/2014, 13:21

... 2990 5 ′′ × 5 ′′ Stanchion 13 .5 – 57 60 51 80 469 0 4270 5 ′′ × 5 ′′ Stanchion 16. 0 4 .68 69 20 62 20 56 30 51 30 5 ′′ × 5 ′′ H 18.9 5. 54 7 860 7 060 63 90 58 20 6 ′′ I 12 .5 3 .67 55 90 50 30 454 0 4130 3790 6 ′′ I ... 59 60 6 ′′ × 6 ′′ H 25. 0 – 11800 1 057 0 957 0 8710 8040 7 360 68 30 6 350 59 30 7 ′′ I 15. 3 4 .50 59 90 54 50 4990 461 0 8 ′′ I...

Ngày tải lên: 08/08/2014, 13:21

... a year, but by 1 65 8 further immigration brought Jamaica's population up to 4 ,50 0 whites and 1,400 blacks. In 166 4 about 1,000 more settlers came from Barbados; in 167 1 some 50 0 came from Suriname, ... English. 6. 2 Phonology. The classic studies of Australian pronunciation are Mitchell & Delbridge (1 965 a, 1 965 b). The most influential recent work so far published is Hor...

Ngày tải lên: 05/08/2014, 14:20