ELSEVIER GEO-ENGINEERING BOOK SERIES VOLUME 5 Part 7 doc

... noise 13. 12223–122 67 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. 12 273 –12322 1090 50 70 43312 . 57 .0 45 29.4 58 .9 36.2 1 07. 2 1.6 0 .55 Heavy burst Mod. ... noise 11. 12 070 –12 077 1180 34 60 6 1 .5 3 1 2 .5 2.0 30 31.9 63 .7 23.8 55 .7 2 .7 1.14 Heavy burst Mod. slabbing with noise 12. 120 87 12223 1180 42 67...

Ngày tải lên: 08/08/2014, 13:21

... 2,3 ,5, 13 c 4–1 2.1–6 .5 >12 .5 <0. 75 0. 15 1 m 20–30 mm 2 4–1 2.1–6 .5 >12 .5 <0. 75 0. 15 20–30 mm 2 4–1 2.1–6 .5 <0. 75 0. 15 1 m 2 4–1 4 .5 11 .5 >10 <30>1 0. 15 1 m ≤ 2a 4–1 4 .5 11 .5 ... 0.0 25 1 .5 2 m ≤ b 100–40 23 72 >30 0.0 25 2–3 m 100–40 23 72 >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...

Ngày tải lên: 08/08/2014, 13:21

... size 6. 35 mm Mean aggregate size 10 mm S. No. Material Quantity, kg/m 3 Quantity, kg/m 3 1. Cement 446 55 8 >4 45 2. Blended sand 6. 35 mm maximum size 1483–1 679 6 97 880 3. 10 mm aggregate – 70 0–8 75 4. ... 6 97 880 3. 10 mm aggregate – 70 0–8 75 4. Steel fiber 39– 1 57 39– 150 5. Accelerator Varies Varies 6. Water/cement (by weight) 0.40–0. 45 0.40–0. 45 Advantages of SFRS...

Ngày tải lên: 08/08/2014, 13:21

... pressure 61 5. 7 Unsupported span 67 5. 8 Rock mass characterization 69 5. 9 Concluding remarks 74 References 74 6 Rock mass number 77 6.1 Introduction 77 6.2 Interrelation between Q and RMR 78 6.3 Prediction ... 1.8 m 1 .5 to 1.8 m Occasional mesh or straps Local application 5 to 7 .5 cm None None Fair RQD 50 to 75 Boring machine Light to medium 1 .5 to 1.8 m 1.2 t...

Ngày tải lên: 08/08/2014, 13:21

... undulating 1 .5 63 ◦ 56 ◦ 37 ◦ 27 ◦ 21 ◦ E. Rough, planar 1 .5 63 ◦ 56 ◦ 37 ◦ 27 ◦ 21 ◦ F. Smooth, planar 1.0 53 ◦ 45 ◦ 27 ◦ 18 ◦ 14 ◦ G. Slickensided, planar 0 .5 34 ◦ 27 ◦ 14 ◦ 9 .5 ◦ 7. 1 ◦ (b) Rock ... coatings) J a = 0. 75 1.0 2.0 3.0 4.0 A. Discontinuous joints 4.0 79 ◦ 76 ◦ 63 ◦ 53 ◦ 45 ◦ B. Rough, undulating 3.0 76 ◦ 72 ◦ 56 ◦ 45 ◦ 37 ◦ C. S...

Ngày tải lên: 08/08/2014, 13:21

... and Metallurgy, London, Chapters5&9. Rabcewicz, L. V. (1964–19 65) . The new Austrian tunnelling method. Water Power, Part I, 1964, 453 - 4 57 ; Part II, 1964, 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 0.3 17 5 0.8 0. 25 0123 456 0.2 0.4 0.6 0.8 1.0 Boundary Conditions Tunnel de...

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 ... consideration the time-dependent support pressures. 0 200 400 600 800 Time, days 0 50 100 150 Tunnel Closure, mm 5 1 7 3 3 - 7 1 - 5 Increase rat...

Ngày tải lên: 08/08/2014, 13:21

... advance Favorable ground 50 –60 m/month 200 70 0 m/month 350 –800 m/month 150 –300 m/month 50 0– 150 0 m/month Unfavorable ground 7 10 m/month 50 –60m/month 75 150 m/month 25 50 m/month 100–200 m/month Utilization of ... 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 machines...

Ngày tải lên: 08/08/2014, 13:21

... 13 .5 – 57 60 51 80 4690 4 270 5 ′′ × 5 ′′ Stanchion 16.0 4.68 6920 6220 56 30 51 30 5 ′′ × 5 ′′ H 18.9 5. 54 78 60 70 60 6390 58 20 6 ′′ I 12 .5 3. 67 55 90 50 30 454 0 4130 379 0 6 ′′ I 17. 25 5. 07 7100 6380 57 70 ... – 11800 1 0 57 0 9 57 0 871 0 8040 73 60 6830 6 350 59 30 7 ′′ I 15. 3 4 .50 59 90 54 50 4990 4610 8 ′′ I 18.4 5. 41 76 40 6 950 6 370 58 60...

Ngày tải lên: 08/08/2014, 13:21

... the construction son of Smith, brother of Sue (Turner 1 972 : 1 37; Gordon & Deverson 19 85: 60); 7 in some areas use of the past participle after want: My shirt wants washed (Rzttlztt ... grammatical construction. 377 English in New Zealand 8 .5. 6 Changes of style level In a few cases there are words of New Zealand English which mean the same as they do in other parts of t...

Ngày tải lên: 05/08/2014, 14:20