Naveen Kumar Email & Phone Number

Saudi Arabia

Jammu & Kashmir, India

● Construction Technique - Drill and Blast with NATM ● Project Cost - 2600 crore ● Lenght of Main Tunnel - 6.426km● Lenght of Escape Tunnel - 6.412km● Lenght of Ventilation Tunnel- 0.575km● Shape - Modified Horse Shoe Shape Tunnel ● Tunnel Dia Finished - MT -10.8m ET -7.5m VT - 8.32m● Cross Passages - PCP - 16 no's @ every 250m MCP - 8 No's @ every 750m● Elevation @WP 2489m @ EP 2634m ●Width of Carriageway MT - 10m ● Design speed - 60km/h● Temperature variation in the area -20 to -25°C in December - January, and 15 to 20 °C in May - June

Pune, Maharashtra, India

Atal Tunnel Rohtang Manali Hp

● Construction technique: Drill & Blast with NATM● Project Cost : Approximately ₹3,200 Crore● Length: 9.02 km (5.6 mi)● Shape (cross-section) of Tunnel: Horseshoe.● Finished width: 10.00 m (32.8 ft) at road level. ...●General altitude of the tunnel: 3,000–3,100 m or 9,840–10,170 ft.●Designated vehicular speed: 80 km/h ●Geology of tunnelling media: Uniformly dipping alternate sequence of quartzites, quartzitic schists, quartz-diolite-schist with thin bands.● Tunnel boring machines were not used because of the inability to see inside the mountain, instead blasting and digging used to build the tunnel.●Temperature variation in the area: 25–30 °C (77–86 °F) during May–June, −30 to −20 °C (−22 to −4 °F) during Dec–Jan.●Overburden: Maximum 1,900 metres (6,230 ft), average more than 600 m (1,970 ft)● Support system: Fibre-reinforced concrete (100–300mm or 0–10 inch thick) combined with rock bolt (26.50mm dia, 5,000–9,000mm or 200–350 inch long) has been used as the principal support system.● Tunnel ventilation: Semi-transverse system of ventilation.● A 2.25 m high and 3.6 m wide emergency tunnel is integrated in the tunnel cross-section beneath the main carriageway.