The pre-buried channel is a component supporting the contact network in the construction of high-speed railway, and is used for tunnel engineering of high-speed railways. The channels are poured into the concrete in a pre-buried manner for contact nets, communication signals and electrical equipment.
Nowadays, the pre-buried channel is not only widely used in the construction of high-speed railways, but also in tunnel construction. Due to the safety, reliability, speed, economy, fire prevention and other excellent performances of the pre-buried channels, the pre-buried channel can be seen in more and more projects.
In today's article, we will introduce the classification of pre-buried channels to help you better choose the appropriate pre-buried channels for construction. The pre-embedded channels can be divided into the following five types according to different structural features and installation methods.
(1) The first type is called Class A. It is a curved channel. The length is 3000mm. Two sets in each group, the center spacing is 400mm; fixed perpendicular to the line direction at the centerline of the tunnel, and the outer channel is 800m away from the edge of the trolley (circumferential direction) Construction joint) .
(2) The second category is called C, which is divided into curved and straight channels. Each of the arc-shaped channels has a length of 2,500 mm and a center-to-center spacing of 600 mm. It is symmetrically fixed on both sides of the tunnel perpendicular to the direction of the line. The inside of the channel is 4977 mm away from the centerline of the tunnel, and the outer channel is 800m away from the edge of the trolley (circumferential construction slot) . The upper and lower end arc channels are 400mm away from the ends of the straight channels; the straight channels are six in each group. The length is 4000mm, and the center spacing of the two tunnel pre-buried channels near the centerline of the tunnel is 2400mm. The center spacing of the two outer channels is 2224mm, which is symmetrically fixed on both sides of the tunnel in parallel with the line direction. The first channel near the center line of the tunnel is 7675mm away from the center of the tunnel. The end of the channel is 400m away from the edge of the trolley (circumferential construction joint) .
(3) The third category is called Class D. It is a curved channel, and the length is 1500mm. Each group is four. The center spacing is 600mm, and it is symmetrically fixed on both sides of the tunnel perpendicular to the line direction. The tunnel pre-buried channel end is 4455mm away from the tunnel center line. And the outer side of the channel is 800mm away from the edge of the trolley (circumferential construction joint).
(4) The fourth category is called Class F. It is a curved channel with a length of 1500mm. Two in each group, with a center-to-center spacing of 400mm, fixed perpendicular to the line direction at the centerline of the tunnel, and the right side of the channel is 250mm from the centerline of the tunnel. The outer side of the channel is 800mm from the edge of the trolley (circumferential construction joint).
(5) The fifth category is called G-type. It is a curved channel with a length of 4000mm. Two sets in each group, with a center-to-center spacing of 600mm, fixed perpendicular to the line direction at the centerline of the tunnel, and the outer channel of the tunnel pre-buried channel is 800m away from the edge of the car (circumferential construction joint).
The classification of the pre-buried channels is far more than this. We understand that the main purpose of its classification is to choose the appropriate channel for construction. Therefore, the quality of the pre-buried channel is also a factor we cannot ignore, and Mankate has researched the pre-embedded channel for more than 15 years. And we have won many authoritative media reports such as CCTV7 "Brand Exhibition", CCV "Ingenuity Creation", Jiangsu Education Channel, Xinhuanet, China Jiangsu Net, etc., quality assurance, let you have no worries.
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(Editor: Nanjing Mankate, if you need to reprint, please indicate the source)
