Logistical method for conveying ballastless tracks in twin-track tunnel in construction

Abstract

The invention discloses a logistical method for conveying ballastless tracks in a twin-track tunnel in construction, which includes: in construction of a line I, the position for a line II not being constructed is used as a trackless logistical passage for construction of the line I; in construction of the line II, sand planned to be laid in a line I cable trench is laid in a 700mm wide track inspection trench outside track bed plates of the finished line I, wood boards are laid on the sand, wheels on one side of a transport vehicle are allowed to run in the center of each track bed plate of the line I, wheels on the other side of the transport vehicle are allowed to run on the wood boards, a temporary trackless logistical passage is formed, and when the construction of the line II is complete, the wood boards need to be removed and the sand needs to be backfilled into the cable trench; vehicle U-turn positions are reserved in the tunnel at intervals of 1km-2km, namely ranges of 50-100m is reserved for temporary no construction and for U-turn of the vehicles, and the ranges are made up when engineering in the tunnel draws close to completion. Logistics includes construction expendables and turnover tools, wherein the construction expendables are supplied as required at any time through transport vehicles from outside of the tunnel, and the turnover tools are transferred to the front operation area from the back operation area of a construction site.

Description

technical field [0001] The invention relates to a method for conveying materials such as concrete during the construction process of a high-speed railway CRST I type double-block ballastless track in a double-track tunnel. Background technique [0002] CRTS I type double-block ballastless track technology is a domestic ballastless track technology formed through re-innovation on the basis of the introduction of German Rehda2000 ballastless track technology. This technology is multi-process continuous flow operation with high work efficiency. However, logistics organization is often the key to restricting construction efficiency, and it needs to be rationally organized and deployed according to the actual situation on site. [0003] High-speed railways are divided into three types: roadbed, bridge, and tunnel. The roadbed and bridge can use parallel construction access roads, and their logistics organization is relatively easy. However, tunnel engineering can only rely on t...

AI Technical Summary

Problems solved by technology

The advantage of this method is: the construction efficiency of Line I is high, and the construction efficiency of Line II is relatively high; the disadvantage: Line II needs to be equipped with temporary transport rails, rail transport equipment and flip-chip equipment, and the cost is relatively high

The advantages of this method are: double-line parallel construction, which is convenient for centralized management; disadvantages: most materials and tools need to be transported three-dimensionally, and all logistics vehicles need to be turned around in the cave

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