Mechanized Rock Excavation with Atlas Copco – No 3 / 2012. Mexican masters of mining Tunnels ease traffic on India’s highways Meet the star performers of MINExpo Reducing the booms in Naples subway Page 3 Page 12 Page 29

in Mexico and next year will be Atlas Copco's 140th year in business. Back then, in 1952, things were certainly different. Hard, manual labour, extreme temperatures, vibra- tion, noise, accidents and injuries were Since those dark, backbreaking days, there has been an amazing trans- formation. Today's mining industry is a fantastic environment characterized by automation, efficiency, high pro- ductivity, low energy consumption, ergonomic design and not least, safety. As you can read in this issue of M&C, the great mines of Mexico, such as the Fresnillo mines, are typi- cal examples of this process...

>>>>> TUNNELING IN INDIA >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> On the MOVE in the HIMALAYAS New tunnels will make famous mountain road shorter, easier and safer India’s surging economy is good news for the people of Jammu & Kashmir, the country’s northernmost state. Here, the famous National Highway 1A is being upgraded by driving tunnels through the mountains, cutting time, improving safety and bringing the people of the region closer to the rest of the country. M&C reports from the foothills of the Himalayas. Mining...

>>>>> TUNNELING IN INDIA >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Srinagar Jammu Srinagar NH 1A Qazigund–Banihal Tunnel Jammu I N D I A The Boomer fleet challenge The new twin tunnel between Qazigund and Banihal presents technical and logistical challenges for the drill rig fleet. T unneling through the mountains of Jammu & Kashmir is no easy task and the project under way between Qazigund and Banihal, a few kilometers north east of Jammu, is no exception. Here, engineers are driving two parallel tunnels, 11 m...

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> On schedule: Atlas Copco service technician Abhoy Biswas with the Atlas Copco Boomer E2 C. Our suppliers must have technical competence and advise us of our options. C.Sridhar, Managing Director of NEC Choosing a supplier Navayuga was formed in 2006 and now has more than 1 000 engineers working on projects in India and overseas and says it prefers to work with one equipment supplier per assignment. Sridhar explains: “When it...

>>>>> TUNNELING IN INDIA >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> The only way in: As there are no access adits to the twin-tube, 8.5 km long Qazigrund-Banihal tunnels all materials and equipment have to reach the faces via the four main portals. As a result, building time is long which is compounded by extremely variable rock conditions. The top heading is driven 100 m ahead of the bench: Here, the engineers charge the holes prior to blasting. with the laser on the face. The rig “reads” the coordinates and determines...

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Srinagar Nashri Jammu Route of Chenani Nashri Tunnel Existing road Chenani I N D I A India’s longest tunnel is taking shape Construction of the longest road tunnel in India is advancing as planned with newly trained operators and equipment. Mining & Construction – 3 / 2012 7

>>>>> TUNNELING IN INDIA >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> of th e In sid e th e ca b 3 C: Al l drill Bo om er XE at io n is pa tte rn in fo rm tly sh ow n co nven ien sc re en , on th e di sp lay ec ise an d en su rin g pr g. effic ien t drill in T raveling on National Highway 1A in northern India is an ordeal at the best of times. This single lane, narrow and winding road crosses some of the steepest, most treacherous terrain in the world. The route becomes especially difficult to navigate between the...