Tunnelbuilder Promoting the world's tunnelling industry to a huge qualified audience

View the Spanish Tunnelbuilder website View the Italian Tunnelbuilder website

Archive Search

India

India, Kolkata - in/29

Metro

Extension underway from 8.45 km from Tollygunge to New Garia for commissioning March, 2004, funded two-thirds by Indian Railways, one-third by State government. Existing system, the first underground metro in India, is 16.45 km-long. Visit www.metropla.net 10/01.8.45 km-long Tollygunge-Garia extension delayed by 9 months by 3,000 squatter families along banks of Tolly's canal holding up necessary piling works for elevated section. Work on the 160 m-long Tollygunge subway has already been completed, and is set for a ceremonial opening on 15th August 2001. Visit www.metropla.net 36/01.



Permalink

India, Manipur - in/28

Hydro

Lokkak Downstream will have 5.8 km-long x 4.5 m-diameter headrace and 46 m-long tailrace from surface powerhouse. Pre-construction work underway on 6.5-year programme. Visit www.nhpcindia.com November 2000.



Permalink

India, Bihar - in/27

Hydro

Koel Karo will have 1.394 km-long x 11.2 m-diameter horseshoe-shaped headrace and 710 m-long, 11 m-high x 11.2 m-wide D-shaped tailrace serving underground powerhouse with 4 x 172.5 MW turbines. Pre-construction work underway for 7-year programme. More from www.nhpcindia.com November 2000.



Permalink

India, Dhaulinga - in/26

Hydro

Rockfill dam with diversion tunnel underway. Headrace 5.8 km-long x 6.5 m-diameter, tailrace 500 m-long x 6.5 m-diameter, together with short access adit 2 km upstream from surge shaft and underground powerhouse for 4 x 70 MW turbines. Tailrace exits in Kali river. Completion 2004. More from www.nhpcindia.com November 2000.



Permalink

India, Maharashtra - in/25

Irrigation

  As part of Krishna-Koyna lift irrigation scheme on Krishna river, B T Patil reports completion of entry and exit portals and 1.5 km of total 7.955 km of 5.6 m x 6.15 arched tunnel, together with three 11.9 m x 6.4 m rectangular access shafts to depths of 51 m, 42 m, and 28 m in basalt and deccan trap. All excavation is drill/blast using Atlas Copco handheld pneumatic machines. Contractor proposes to complete $11 million contract in early-2002, taking 30 months against schedule of 60 months. More from patson@bgl.vsnl.net.in Visit equipment manufacturer www.atlascopco.com October 2000.



Permalink

India, Sikkim - in/24

Hydro

Teesta V will have an underground powerhouse 99.5 m x 50.5 m x 23 m-high to house 3 units of 170 MW and transformer cavern will be 85 m x 15 m x 25 m-high with an 8 m x 8 m access tunnel. Three 176 m x 4.7 m-diameter steel-lined vertical pressure shafts and a 92 m-high x 25 m-diameter surge shaft. The headrace will be 17.78 km-long x 9.5 m-diameter circular section with three 132 m-long x 6 m-wide D-shaped tailrace tunnels. Two 12.5 m-diameter diversion tunnels 550 m and 600 m in length will be required on the right bank of the Teesta river. Three desilting chambers 315 m-long x 20 m-wide x 22.5 m-high downstream of intake with 4.5 m-diameter circular section silt flushing tunnels. Five sites have been identified for 7 m x 7 m access adits for construction. Pre-construction work underway on 7-year programme. Visit www.nhpcindia.com October 2000.



Permalink

India, Uttar Pradesh - in/23

Dhauliganga Hydro

280 MW project financed by JBIC underway with start of construction work on main underground components by National Hydroelectric Power Corporation Ltd. Visit www.nhpcindia.com August 2000.



Permalink

India, Maharashtra - in/22

Arphal Water Transfer

  Kvaerner Cementation India underway on 16.6 km, 30 sq m cross section arched, unsupported tunnel in basalt using two Atlas Copco Boomer 281 drillrigs on four faces accessed from two adits. Both portals sub-contracted. More from info@kvaerner.com . October 1999.



Permalink

India, Kashmir - in/21

Dul Hasti Hydro

  Jaiprakash getting underway at Jammu using nine Atlas Copco L2D Boomers equipped with 1838 Rocket drifters. October 1999.



Permalink

India, Baspa - in/20

Hydro

  Private power project being developed by Jaiprakash Industries for commissioning 2002. Powerhouse excavation complete and headrace tunnel well underway using Atlas Copco Boomer 352s. October 1999.



Permalink