Upfront Associate (HK) Limited. Vol 2. 2 No 5 (0. MTR Kwun Tong Line Extension - - A 2. Background. The current railway network has not covered some densely populated areas such as Ho Man Tin, Hung Hom and Whampoa. Meanwhile, the frequent traffic jam from the Cross Harbour Tunnel during peak hours caused great inconvenience to commuters. Therefore, the MTR Corporation (MTR) has long been planning to launch the Kwun Tong Line Extension project (KTE) to alleviate the serious traffic congestion.

MTR was authorized to proceed with the project in 2. The Contract. The alignment of KTE will be extended from the existing Yau Ma Tei Station to Whampoa via Ho Man Tin with 2 new stations to be built.

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The contract of construction of Ho Man Tin Station and tunnel from Yau Ma Tei to Whampoa, which is numbered 1. Nishimatsu Construction Company Limited, while Chun Wo – Hip Hing Joint Venture is in charge of the contract of construction of Whampoa Station and overrun tunnel, the numbered 1.

The project is underway at a cost of around HK$5. December 2. 00. 9 prices). Construction of the Tunnels. The 2. 6 km long KTE will operate entirely in subterranean tunnel. Beginning from Yau Ma Tei Station, the alignment will run through Gascoigne Road and Wylie Road and link up Ho Man Tin Station at the site of the ex- Valley Road Estate. It will then run along Chatham Road North, Wuhu Street and Tak Man Street and reach the terminal station at Whampoa.

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The construction of the twin- track tunnel with a diameter of 1. Yau Ma Tei to Ho Man Tin will be started from the temporary work site at Wylie Road. As for the 9. 8 m span platform tunnel and 5.

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• Background The current railway network has not covered some densely populated areas such as Ho Man Tin, Hung Hom and Whampoa. Meanwhile, the frequent traffic jam from.

Ho Man Tin to Whampoa, the excavation will commence from Fat Kwong Street Playground temporary work site. Station Design Located approximately 2. Ho Man Tin Station will be an interchange station for the Kwun Tong Line Extension and the future Shatin to Central Link. The station adopts cruciform design for smooth passenger flow. Kwun Tong Line will be arranged at the lowest level, while the upper level will serve Shatin to Central Link. An interchange concourse will be set up in between the two platforms and different levels are connected by escalators. The station is served by a total of 5 entrances, which are located at Chung Hau Street, Chung Yee Street, Yan Fung Street, Chatham Road North and Fat Kwong Street.

The entrances and station concourse are above ground. Whampoa Station, which connects the road surface to the underground platform situated as deep as 2.

Kwun Tong Line. In order to avoid serious traffic impact caused by extensive road excavation, split concourse design will be adopted. The concourse of Whampoa Station will be divided into East and West Concourses, which are located at the junction of Shung King Street/Tak On Street and Hung Hom Road/Tak Man Street respectively. The lower level is single- sided platform to tackle geographical constraints. Pedestrian Link Facilities. Microsoft Project Run Multiple Instances Of Yahoo more. To improve the connectivity between Ho Man Tin Station and areas in the vicinity, several pedestrian links will be established. A pedestrian subway along Fat Kwong Street and a covered footbridge across Chung Yee Street will be built to connect a footbridge to Ho Man Tin Estate and Oi Man Estate respectively. A covered footbridge crossing Chatham Road North will also be constructed to link up Ho Man Tin Station and Wuhu Street.

Residents from Wuhu Street can even go to the residential area at Ho Man Tin via the walkway at the non- paid area in the station. Barrier- free access and escalators will be provided for people in need. Construction Methods. Different construction methods, including drill and blast, mechanical excavation, cut- and- cover and open blast method are adopted in the tunnels construction works. A 1. 20 m long single- track tunnel and a 1,7. This method is suitable for excavating hard rocks, as well as requiring less working area and construction period. To deal with the narrow construction environment, jumbo drilling machine which is 1.

Yau Ma Tei Station. Tunnel constructed by mechanical excavation is roughly 3. Whampoa Station and the overrun tunnel. Mechanical excavation brings less vibration, noise and pollution, therefore carries less impact to road users and avoids damage to the existing buildings. For Whampoa Station, the concourses and platforms will be constructed by cut- and- cover method, which accounts for approximately 2. Steel pipe piles will be installed in advance before bulk excavation. While the excavation is implemented underground, temporary road decks will be placed on the original road surface to maintain smooth traffic flow.

Open blast method will be applied to the construction of Ho Man Tin Station. With a shorter construction period than mechanical excavation, it can effectively speed up the progress and therefore reduce disturbance on construction nuisance.

Protective measures such as temporary vertical screens and blasting cages will be installed and the impact from blasting operations on nearby buildings will be strictly monitored. Challenges. Since the construction works will be carried out in the districts that are highly populated and frequently congested, MTR has to keep to minimum the impact on road users and nearby residents. An independent consultant has been appointed to conduct environmental impact assessment study and provide suggestions on mitigation measures to reduce the negative influences which might cause by the project, such as watering and covering stockpile areas to suppress dust, adopting quiet plant and erecting noise barrier to lessen noise level, etc. On the other hand, MTR will regularly report the information of the Temporary Traffic Management Scheme at the District Council and the Community Liaison Groups meetings. Notice will be given out beforehand to inform the commuters for each temporary traffic arrangement. Environmental Protection. Several eco- friendly designs will be adopted to coordinate with sustainable development.

For example, the valley- shape alignment track design reduces energy consumption for train operations by 2 to 3% since it allows trains to accelerate and decelerate naturally when travelling downhill and upslope. The energy from downward lifts and escalators can be regenerated into electricity for other station electrical and mechanical utilities by using power regenerative system and this helps diminish 1. Water- cooled air- conditioning system and LED lighting system will also be introduced to use 1.

On the other hand, greening works will be launched within the site area of the project. An approximate total of 5. Ho Man Tin Station. Meanwhile, around 2,9. Ho Man Tin Station.

Progress and Conclusion. The construction works for KTE are progressing steadily and the new rail line is scheduled for commissioning in 2. Upon completion, it is expected that the KTE will generate HK$4.

Courtesy acknowledgement: MTR Corporation Limitedfor providing the above information and photos. Youtube Video Site Video Clips.