Immersive : รถไฟฟ้าใต้ดินสายสีน้ำเงินส่วนต่อขยายลอดแม่น้ำเจ้าพระยา

Summary

The video covers the construction of the extended Blue Line subway in Bangkok, focusing on the underground tunnel under the Chao Phraya River. This project, using advanced Japanese technology, marks Thailand's first tunnel under the river. The tunnel is built with reinforced concrete to prevent collapses and water leakage. Construction challenges include uneven soil conditions, especially near the river. Upon completion in 2017, the subway will significantly improve transportation between Thonburi and Phra Nakhon. The project will feature both underground and elevated tracks, enhancing connectivity across the city.

Takeaways

• 🚇 The script discusses the construction of an underground skytrain project, specifically the Blue Line extension in Bangkok, Thailand.
• 📅 The project is expected to be completed by 2560 (2027 in the Gregorian calendar), with just a few years remaining.
• 🔄 The completion of the project will greatly facilitate travel between Thonburi and the main city area, making it much easier for commuters.
• 🌐 This is the first time Thailand is constructing a tunnel to transport passengers under the Chao Phraya River.
• 🚀 The tunneling process uses a Japanese technology called Earth Pressure Balance (EPB), which is a shield tunneling method.
• 🏗️ The tunnel lining consists of large concrete segments reinforced with steel, designed to prevent soil collapse and water infiltration.
• 🔩 The segments are assembled on-site, with an average of about 12 rings (segments) being constructed per day.
• 📏 Each segment has a specific size, with a diameter of 570 mm at the center, a thickness of 30 mm, and an approximate length of 120 mm.
• 💸 The project is budgeted at over 10 billion baht and is expected to be completed around October 2558 (2015 Gregorian calendar).
• 🔩 The tunnel will be approximately 20 meters below the water level and 10 meters below the ground surface, with a total depth of 30 meters.
• 🚉 The project is part of the Blue Line extension, which is divided into two sections: the first from Hua Lamphong to Bang Kae, with 5 stations, and the second from Bang Sue to Tha Phra, with 10 stations.

Q & A

What is the current status of the Blue Line MRT extension project mentioned in the script?

The script indicates that the construction of the Blue Line MRT extension is underway and is expected to be completed within the next three years by 2560.

What is the significance of the tunnel construction under the Chao Phraya River as part of the MRT Blue Line extension?

The tunnel construction under the Chao Phraya River is a first in Thailand, serving as an underground transportation link for passengers between Thonburi and the Phra Nakhon side.

What type of tunnel boring technology is being used for the MRT Blue Line extension project?

The project is utilizing a closed-face Earth Pressure Balance (EPB) shield tunnel boring machine, which is a technology imported from Japan, as well as hydraulic tunnel boring.

What materials are used to construct the tunnel segments for the underground MRT?

The tunnel segments are made of reinforced concrete plates designed to prevent soil collapse and to prevent groundwater from entering the tunnel, while also reducing abnormal air pressure.

What is the average number of tunnel rings that can be assembled per day during the construction of the MRT Blue Line extension?

On average, about 12 tunnel rings can be assembled per day.

How deep will the tunnel be constructed from the water level and ground level?

The tunnel will be approximately 20 meters below the water level and an additional 10 meters below ground level, totaling 30 meters deep.

What is the estimated budget for the construction of the tunnel under the Chao Phraya River for the MRT Blue Line extension?

The estimated budget for this part of the project is over 10 billion baht.

What is the total length of the tunnel that will be constructed under the Chao Phraya River?

The total length of the tunnel is 2.6 kilometers for one way, making it 5.2 kilometers for a round trip.

How many stations are planned for the first section of the MRT Blue Line extension from Hua Lamphong to Bang Kaeo?

There will be a total of 5 stations serving the 14-kilometer first section of the MRT Blue Line extension.

What are the challenges faced during the construction of the tunnel segments for the MRT Blue Line extension?

The main challenges include the unevenness of soil layers and sand layers, especially in areas close to the river, which require expertise, experience, and special techniques to ensure quality and safety in construction.

What is the expected completion date for the tunnel boring under the Chao Phraya River for the MRT Blue Line extension?

The tunnel boring is expected to be completed around October 2558 (2015 in the Gregorian calendar).