Culvert pipe prefabricated end plate and grouting bag combined plugging structure and construction method thereof

Abstract

The invention discloses a culvert pipe prefabricated end plate and grouting bag combined plugging structure, and belongs to the technical field of civil engineering. The structure comprises a culvertpipe arranged at a water delivery position of a dam body, wherein the culvert pipe is filled with a row of grouting bags, a culvert pipe space except the grouting bags is filled with self-compacting concrete, culvert pipe prefabricated end plates are installed at the ends of the culvert pipe, at least two rows of grouting holes with downward end openings are formed in the dam body in the axial direction of the culvert pipe, one row of the two rows of grouting holes penetrate through the culvert pipe, and the end openings of the other grouting holes are positioned within 0.5 m from the peripheral side of the culvert pipe. The structure can improve the construction efficiency of culvert pipe plugging, reduces the construction difficulty, and avoids the situation that a novel water seepage channel is formed.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a combined sealing structure of a culvert pipe prefabricated end plate and a grouting bag and a construction method. Background technique [0002] Most of the small and medium-sized reservoirs in my country were built in the 1950s and 1960s, and most of them were earth dams. Due to the constraints of the time, the engineering standards were generally low and the construction quality was poor. Most of the reservoir discharge water was rebuilt from construction diversion pipes The culvert pipes passing through dams are generally built with lime mortar or lime cement mortar. Due to the long operation time and lack of necessary management protection, there are problems such as facility aging, cracking, and serious water leakage on the pipe wall. [0003] In terms of engineering, the culvert pipe plugging is usually excavated along the old culvert pipe on the fron...

AI Technical Summary

Problems solved by technology

[0002] Most of the small and medium-sized reservoirs in my country were built in the 1950s and 1960s, and most of them were earth dams. Due to the constraints of the time, the engineering standards were generally low and the construction quality was poor. Most of the reservoir discharge water was rebuilt from construction diversion pipes The culvert pipes passing through the dam are generally built with lime mortar or lime cement mortar. Due to the long operation time and lack of necessary pipe protection, there are problems such as facility aging, cracking, and serious water leakage on the pipe wall.

[0003] In terms of engineering, the culvert pipe plugging is usually excavated along the old culvert pipe on the front slope of the dam to the bedrock, poured concrete plugs and concrete cut-off rings, and backfilled with clay. Backfilling and grouting the water-discharging culvert pipe section of the plug, covering it with soil, requires a large amount of work and takes a long time, and if the anti-seepage measures are not in place, it will easily leave hidden dangers of leakage

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