Method for repairing and reinforcing vertical elevator shaft of underground engineering

Abstract

The invention discloses a method for repairing and reinforcing a vertical elevator shaft of underground engineering, which comprises the following steps of: a, performing curtain grouting on peripheral side walls and bottom plate of the elevator shaft; b, polishing cement slurry of concrete surfaces of the peripheral side walls and bottom plate of the elevator shaft until a base layer is exposed;c, drilling holes in polished peripheral side walls and bottom plate of the elevator shaft and implanting a plurality of L-shaped base layer lacing bars; d, coating the base layer of the peripheral side walls and bottom plate of the elevator shaft with interface glue after reinforcement planting is finished; e, arranging a steel sleeve in the elevator shaft, and arranging the L-shaped steel platelacing bars on an outer wall of the steel sleeve, wherein a gap is reserved between the steel sleeve and the peripheral side walls and bottom plate of the elevator shaft; and f, pouring grouting materials between the steel sleeve and an elevator shaft wall after the steel sleeve is installed. The method for repairing and reinforcing the vertical elevator shaft of underground engineering is simpleand convenient to construct, and can be used for repairing and reinforcing the vertical elevator shaft with leakage, so that a large amount of silt and sewage are prevented from being accumulated in the elevator shaft due to water seepage, and a normal operation of an elevator is guaranteed.

Description

technical field [0001] The invention relates to the field of underground engineering, in particular to a method for repairing and strengthening a vertical elevator shaft in underground engineering. Background technique [0002] In order to develop and utilize underground space resources, people have built underground projects such as underground houses, underground railways, highway tunnels, underwater tunnels, underground common trenches and underpasses for crossing streets. In underground engineering construction, in order to install vertical elevators in the later stage, vertical elevator shaft construction is usually carried out, and the side walls and floor concrete around the elevator shaft are often poured to isolate the elevator shaft from the original stratum. [0003] When the side wall of the elevator shaft and the concrete of the bottom slab crack in the later stage, since the side wall of the elevator shaft and the outside of the bottom slab are stratum soil, wh...

AI Technical Summary

Problems solved by technology

[0003] When the side wall of the elevator shaft and the concrete of the bottom slab crack in the later stage, because the side wall of the elevator shaft and the outside of the bottom slab are stratum soil, which has relatively rich groundwater, a large amount of silt will accumulate in the elevator shaft accompanied by water and sand gushing, resulting in elevator not working

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