Construction method of embedded pipe in concrete cut-off wall based on detachable straightening device

Abstract

The invention discloses a construction method for embedded pipes in a detachable straightening concrete anti-seepage wall. The multiple embedded pipes are vertically arranged in a detachable straightening device manually in batches and are welded in an end-to-end manner; then the embedded pipe on the uppermost part is fixed to a guiding groove, a concrete pouring guide pipe is used for conducting pouring in the guiding groove from bottom to top, and the concrete anti-seepage wall can be achieved. According to the construction method, a crane is not needed, and the process can be manually finished. The horizontal detachable straightening device is simple, cyclic utilization can be achieved, accumulated inclination generated in the embedded pipe aligning and welding processes can be reduced, and the overall gradient of the embedded pipes is guaranteed. Efficiency is improved, and cost is greatly saved. Through strengthening treatment at the positions of welding points, the embedded pipes on an upper layer and a lower layer of a joint are integrated, rigidity in two directions is improved, and deformation generated in the pouring process is reduced.

Description

technical field [0001] The invention relates to a technology in water conservancy construction, in particular to a construction method for pre-embedded pipes in concrete cut-off walls based on a detachable straightening device. Background technique [0002] In water conservancy projects, for the anti-seepage method of the combination of dam concrete cut-off wall and curtain grouting, what kind of hole-forming method is used in the concrete cut-off wall has a great influence on the quality, progress, and cost of the project. At present, the drilling method is mostly used in the anti-seepage walls with a wall depth of less than 30m. But the existence of the drilling method can not save the construction period, can not guarantee the quality of the holes, and the engineering cost is higher, and the holes are damaged greatly to the cut-off wall. The pre-buried pipe construction method consumes a certain amount of pipe materials and results in higher engineering costs, but the ho...

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Problems solved by technology

[0004] The present invention aims at the defect that a crane must be used for construction in the face of a relatively deep (especially more than 50 meters) concrete cut-off wall in the prior art, and proposes a pre-embedded concrete cut-off wall based on a detachable straightening device. Pipe construction method that can be handled manually without a crane

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