Class overview | |
---|---|
Name | Tuen MunâChek Lap Kok/Qin Liangyu |
Builders | Herrenknecht AG |
Operators | China |
Cost | US$2.3 billion (2015) or HK$18.2 billion (2015) |
In service | 2015-2020 |
Completed | 1 |
Retired | 1 |
History | |
China | |
Name | Tuen MunâChek Lap Kok/Qin Liangyu |
Builder | Herrenknecht AG |
Commissioned | 2015 |
Fate | Disassembled after 2020 |
Notes | The largest tunnel boring machine ever built |
General characteristics | |
Class and type | Mixshield S-880-type Tunnel boring machine |
Tonnage | 4,850 tonnes (4,770 long tons; 5,350 short tons) |
Length | 120 metres (390 ft) |
Beam | 17.6-metre-diameter (57.7 ft) |
The Tuen Mun - Chek Lap Kok TBM otherwise known as Qin Liangyu or more formally, the Mixshield S-880 was the world's largest tunnel boring machine launched in June 2015 by Herrenknecht in Germany. [1] [2] The TBM was used to drill a 5 km tunnel connecting Tuen Mun to the Hong Kong International Airport, part of the Tuen MunâChek Lap Kok Link project. The cost of the tunneling machine itself was around HK$ 18.2 billion (US$ 2.3 billion) [3]
The machine had a diameter of 17.6 metres (57.7 ft), [4] 0.1 metres (0.3 ft) more than Bertha, the previous largest tunnel boring machine. [5] [6] Outside of its cutting diameter, it had an overall length of 120 metres (393 ft 8 in) and weighed 4,850 tonnes (5,346 US-tons). [2]
The machine would excavate a 5 km-long underwater tunnel, working at pressures as high as 5 bars. The drilling had taken place in depths of up to 50 m below sea level. [7]
By 25 March and 3 November 2015, the TBM's shield was converted into one the much smaller 14-m to complete the rest of the tunnel alongside another Herrenknecht TBM. [2] The two 14-m TBMs broke through to complete the tunnels on 27 February 2019. [2]
The tunnel boring project began in October 2018 after the cutterhead conversion and was completed by the end of 2020. [8] Tuen MunâChek Lap Kok was disassembled after the completion of the tunnel. [8]
Class overview | |
---|---|
Name | Tuen MunâChek Lap Kok/Qin Liangyu |
Builders | Herrenknecht AG |
Operators | China |
Cost | US$2.3 billion (2015) or HK$18.2 billion (2015) |
In service | 2015-2020 |
Completed | 1 |
Retired | 1 |
History | |
China | |
Name | Tuen MunâChek Lap Kok/Qin Liangyu |
Builder | Herrenknecht AG |
Commissioned | 2015 |
Fate | Disassembled after 2020 |
Notes | The largest tunnel boring machine ever built |
General characteristics | |
Class and type | Mixshield S-880-type Tunnel boring machine |
Tonnage | 4,850 tonnes (4,770 long tons; 5,350 short tons) |
Length | 120 metres (390 ft) |
Beam | 17.6-metre-diameter (57.7 ft) |
The Tuen Mun - Chek Lap Kok TBM otherwise known as Qin Liangyu or more formally, the Mixshield S-880 was the world's largest tunnel boring machine launched in June 2015 by Herrenknecht in Germany. [1] [2] The TBM was used to drill a 5 km tunnel connecting Tuen Mun to the Hong Kong International Airport, part of the Tuen MunâChek Lap Kok Link project. The cost of the tunneling machine itself was around HK$ 18.2 billion (US$ 2.3 billion) [3]
The machine had a diameter of 17.6 metres (57.7 ft), [4] 0.1 metres (0.3 ft) more than Bertha, the previous largest tunnel boring machine. [5] [6] Outside of its cutting diameter, it had an overall length of 120 metres (393 ft 8 in) and weighed 4,850 tonnes (5,346 US-tons). [2]
The machine would excavate a 5 km-long underwater tunnel, working at pressures as high as 5 bars. The drilling had taken place in depths of up to 50 m below sea level. [7]
By 25 March and 3 November 2015, the TBM's shield was converted into one the much smaller 14-m to complete the rest of the tunnel alongside another Herrenknecht TBM. [2] The two 14-m TBMs broke through to complete the tunnels on 27 February 2019. [2]
The tunnel boring project began in October 2018 after the cutterhead conversion and was completed by the end of 2020. [8] Tuen MunâChek Lap Kok was disassembled after the completion of the tunnel. [8]