Tunnel lining trolley and lining concrete pouring method thereof

Abstract

The invention discloses a tunnel lining trolley. The tunnel lining trolley comprises a lining trolley body (1); a lining trolley panel (2) is arranged on the lining trolley body (1); a plurality of fragmented steel end molds are arranged on the outside of the lining trolley body (1) and surround the lining trolley body; a gap between each two adjacent fragmented steel end molds is blocked by a corresponding fragmented wood mold plate (3); the upper ends of the fragmented steel end molds are connected with a tunnel preliminary support (4); and one sides of the fragmented steel end molds are connected with the lining trolley panel (2) through connecting mechanisms. A steel end mold panel is movable, adaptability of the steel end molds on concrete lining thickness is improved, the end molds are fragmented steel mold plates, and are conveniently assemble in a modular manner, assembly efficiency is high, leakproofness of the mold plates is good, the circumstance that lining construction accidents due to poor quality are caused by the reason that the mold plates loose in a construction process is avoided, and concrete lining construction progress is increased greatly.

Description

technical field [0001] The invention relates to a tunnel lining trolley and a lining concrete pouring method thereof. Background technique [0002] With the increasing construction of long tunnels in China, TBM roadheaders are used more and more frequently, and the application of TBM synchronous lining technology greatly shortens the tunnel construction period. At present, the tunnel construction process mainly includes the following four steps: excavation→initial support→inverted arch lining construction→arch wall lining construction. The construction of the lining is related to the final construction quality of the project, and its construction progress is also related to the cycle of the entire tunnel construction. [0003] The current lining construction method is mainly as follows: use the integral hydraulic lining trolley, press the rear end of the trolley on the concrete lining that has been poured on the previous slab during lining construction, use the poured concr...

AI Technical Summary

Problems solved by technology

This kind of lining construction method is currently the most advanced method, and it has obvious disadvantages: the front-end formwork needs to be assembled tightly piece by piece by using narrow wooden boards, and the on-site assembly is troublesome, inefficient, and time-consuming.

The assembly effect of the front-end formwork is related to the construction quality. During the on-site construction, the formwork is often not tightly assembled or fixed firmly, resulting in serious grout leakage during the construction process, resulting in honeycomb pockmarks, holes, leaky tendons, and rotten roots on the end face of the lining concrete. Defects. Seriously, the size of the lining under construction does not meet the design requirements due to the running of the formwork, and it has to be scrapped.

These problems will cause the concrete lining construction progress to be slow and seriously delay the construction period.

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