Practical rock engineering book

... International Society for Rock Mechanics held in Aachen, Germany, in September 1991 When is a rock engineering design acceptable When is a rock engineering design acceptable When is a rock engineering design ... features in the rock mass forming the bench of an open pit mine The development of rock engineering Rock Engineering Civil and mining engineers have been build...

Ngày tải lên: 01/11/2017, 21:45

... THE PROCESS OF ARDUINO ENGINEERING Figure 1-12 A schematic of Blinking LED project First, we need to install the Arduino IDE To this, go to www .Arduino. cc/en/Main/Software The Arduino IDE will ... Integration Engineering a GPS Module with the Arduino 97  Chapter 6: Interlude: Home Engineering from Requirements to Implementation133  Chapter 7: Robot Perception: Object Detecti...

Ngày tải lên: 15/02/2014, 07:20

... results 11 .8 Blast design References 15 1 15 1 15 2 15 3 15 4 15 6 15 6 16 2 16 7 17 7 12 Rock bolting 12 .1 General 12 .2 Types of rock bolts 12 .3 Selection of rock bolts 12 .4 Installation of rock bolts 12 .5 ... Concluding remarks References 1 15 11 6 11 6 11 9 11 9 12 0 12 0 12 1 12 4 12 8 13 0 13 2 10 Norwegian method of tunnelling 10 .1 Introduction 10 .2...

Ngày tải lên: 08/08/2014, 13:21

... massive rock σθ /qc > 20 0 20 0–10 10 5 45 35 – 45 25 – 35 15 – 25 < 15 600–440 440 28 0 28 0–1 35 1 35 45 45 30 * These values are applicable

Ngày tải lên: 08/08/2014, 13:21

... 100 Exc Poor 10 Ext Poor Very Poor 32 35 38 31 34 30 37 28 27 24 23 20 Very Good Good 16 15 19 14 13 18 22 26 Fair Ext Good 12 11 10 Exc Good 17 21 25 29 33 Poor 36 0.1 0.001 0.1 0.10 1.0 10 100 ... = − 45 Upward α = +90◦ α = + 45 Horizontal α = 0◦ 10 20 30 40 50 60 0 0 0 – −8.8 −7.8 −6.6 5. 3 −4.0 3. 2 3. 4 3. 1 −2.7 −2.2 −1.7 −0.8 −0.9 −0.8 −0.7 −0.6 −0.4 – −6.9 −6.2 5. 3...

Ngày tải lên: 08/08/2014, 13:21

... 10 4 10 4 10 4 10 4 10 4 10 4 10 4 10 4 10 4 10 4 4–1 4 1 4 1 4 1 4 1 30– 65 30– 65 3 .5 9 3 .5 9 6–9 12 .5 ... 1–0 .4 1–0 .4 0 .4 0.1 0 .4 0.1 0 .4 0.1 0 .4 0.1 0 .4 0.1 0 .4 0.1 0 .4 0.1 0 .4 0.1 0 .4 0.1 0 .4 0.1 0 .4 0.1 0 .4 0.1 0 .4 0.1 4 .5 11 .5 4 .5 11 .5 15 24 8– 15 30 46 18–30 1 .5 4. 2 1 .5 4. 2 1 .5 4. 2 3.2–7 .5 3.2–7 .5 ... 3.2–7 .5 12–18 6–12 12–1...

Ngày tải lên: 08/08/2014, 13:21

... Journal, Sydney, 35, (7-8), July-Aug-1963, 129- 150 Rabeewiez, L V (1 955 ) Bolted support for tunnels Mine and Quarry Engineering, Part I, March 1 955 , 111-116, Part II, April 1 955 , 153 -160 Singh, B., ... (1 955 a) Principles of Reinforcing Bedded Roof with Bolts U.S Bureau of Mines, R.I 51 56 Panek, L A (1 955 b) Design of Bolting Systems to Reinforce Bedded Mine Roof U.S Bureau of...

Ngày tải lên: 08/08/2014, 13:21

... bridge Cut and cover Tunnelled 25 100 250 100 to 200 150 to 50 0 30 30 30 40 50 55 130 280 140 to 240 200 to 55 0 0. 45 0. 75 0.90 0.70 to 0.80 0. 75 to 0.90 Metro tunnels 259 Fig 17.1 Precast lining in ... 793 days 413 Radial displacement, mm 240 308 200 241 160 157 96 120 56 80 19 12 40 X 0 2 .5 5.0 7 .5 10.0 12 .5 Radial distance, m 15. 0 ub b 17 .5 Fig 19.1 Variation of radi...

Ngày tải lên: 08/08/2014, 13:21

... 7 .5 45 29 .7 59 .4 37. 0 108 .7 1.6 0 .55 Heavy burst 14 12 273 –12322 1090 50 70 3 2 .5 7. 0 45 29.4 58 .9 36.2 1 07. 2 1.6 0 .55 Heavy burst 15 12 359 –12428 1060 50 75 1 .5 2 .5 3.8 45 28.6 57 .2 29.4 0 .58 Heavy ... 11643–11 650 1300 60 60 1 .5 2 .5 2.0 45 35. 1 70 .2 23.8 108.6 2.9 0. 65 Heavy burst 11 656 –11662 1300 55 55 1 .5 2 .5 1.8 45 35. 1 70 .2 23....

Ngày tải lên: 08/08/2014, 13:21

... 6. 35 mm Mean aggregate size 10 mm S No Material Quantity, kg/m3 Quantity, kg/m3 446 55 8 1 483 –1679 >4 45 697 88 0 – 39– 157 Varies 0.40–0. 45 700 8 75 39– 150 Varies 0.40–0. 45 Cement Blended sand 6. 35 ... Shotcrete (a) (b) Fig 28. 1 Difference in application of shotcrete with (a) wire mesh and (b) steel fiber Integrated method of tunnelling 407 28mm 25mm 0.45mm 0 .53 mm 0 .50 mm...

Ngày tải lên: 08/08/2014, 13:21

... 856 0 1 057 0 44′′ 46′′ 48′′ 391 0 3280 4 690 56 30 6 390 454 0 57 70 4460 6110 6030 7040 10860 7740 95 7 0 59 90 7640 8640 357 0 299 0 4270 51 30 58 20 4130 52 60 4060 55 70 54 90 6410 98 90 7 050 8710 54 50 6 95 0 ... 54 50 6 95 0 8 290 3 790 4830 3730 51 00 50 33 58 70 90 60 6460 8040 499 0 6370 7600 50 ′′ 52 ′′ 54 ′′ 56 ′′ 6830 6 350 59 30 54 50 650 0 6040 56 40 4...

Ngày tải lên: 08/08/2014, 13:21

... ta học phần khác phần cứng công cụ khác như: Arduino, Arduino Shields (lá chắn arduino) , Đồng hồ vạn năng, kìm nhọn , sau tìm hiểu qui trình kĩ thuật Arduino Các bước trình : thu thập yêu cầu, ... Hình 1-1 : Arduino UNO (trái ) and Duemilanove (phải) Arduino BT Bluetooth Mate sliver: Ta nên sử dụng modem Bluetooth Mate sliver cho sách làm cho Arduino Duemilanove UNO bạn hàn...

Ngày tải lên: 14/11/2014, 06:02

... Foundations of Engineering Economy 1. 1 1. 2 1. 3 1. 4 1. 5 1. 6 1. 7 1. 8 1. 9 1. 10 1. 11 L .12 Chapter Why ~ ~ ~ i n e e r~i o n o m y ~ " ~ 1s lmpomnt to ~ n g i n e e n (and Olher Profcsrionrls) Role of Engineering ... d~r.g\conr.rpon

Ngày tải lên: 22/11/2013, 11:01

... + 125 ,000 -27 .000 S A M E H -25 0$00 -300,000 -550,000 50,000 90,000 150,000 4 Initial Investment, $ Life, Years PW at 12% per Year, $ -15,000 -25 ,000 - 10,000 -25 ,000 -40,000 12 8,540 12, 325 ... = $2. 14 August 20 03 A predicted price in 20 05 1s $2 23(1.04) = $2. 32 August 20 05 If inflation averages 4% per year over the next 10 years, Equation [14.3] is used to pred~ct Big Mac p...

Ngày tải lên: 22/11/2013, 13:39