Method for concrete conveying and lining construction in large-slope long inclined-shaft small-section tunnel

Abstract

The invention discloses a concrete transportation and lining construction method for a small-section tunnel with a long inclined shaft with a large slope: the inclined shaft penetrates into the main tunnel from the side of the tunnel, and the mixed concrete enters the aggregate bin at the bottom of the inclined shaft through a chute installed on the inclined shaft , and then transported to the pouring areas on both sides by the delivery pump, and each pouring area uses four sets of bottom formwork and two sets of side arch formwork for partition pouring. The invention solves the problem of rail slag transportation and concrete hole pouring transportation through the inclined shaft chute The interference of parallel operations, through the pumping relay in the front tunnel, overcomes the difficulties of trackless transportation, concrete transportation and bottom sorting equipment in the tunnel. The difficulty of large and narrow passages for bottom picking equipment is increased through the formwork configuration of 4 sets of bottom formwork and 2 sets of side and top arches combined with partitioned pouring. The working surface is optimized, the space is optimized, and the construction progress is accelerated under the premise of ensuring the construction quality and safety.

Description

technical field [0001] The invention relates to a construction method for tunnel lining, in particular to a method for transporting concrete in an inclined shaft and for pouring tunnels in different areas. Background technique [0002] When the section of the tunnel is small, the slope of the inclined shaft reaches 24°, the height difference reaches 213.5m and above, and the length of the inclined shaft reaches 575.75m, it is difficult to realize the tunnel lining while excavating the inclined shaft. , How to realize the uninterrupted transportation in the tunnel, the parallel operation of the lining in the concrete transportation tunnel, and the two-way running space of the transportation channel are difficult problems during construction. Similar tunnels are currently being built in China. In order to ensure that the tunnel lining can not be disturbed, the method of complete bottom selection of the whole tunnel and centralized pouring after the floor cushion is poured is g...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a concrete transportation and lining construction method for a tunnel with a large slope, long inclined shaft, and small section, so as to overcome the problems of long process time, loose construction organization, low work efficiency, high cost, and gap between processes in the prior art. Problems such as inability to work in parallel, discontinuous transportation of concrete in tunnels, inflexibility of construction equipment, etc.

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