Grouting structure and grouting method for large-diameter high-strength pressure pipelines

Abstract

The invention relates to a large-diameter high-strength pressure pipeline grouting structure and method, in particular to a large-diameter high-strength pressure pipeline grouting structure and method applied to the field of building construction. The large-diameter high-strength pressure pipeline grouting structure is simple, easy to operate, and capable of effectively shortening the construction period, and open holes do not need to be reserved in a steel liner. The large-diameter high-strength pressure pipeline grouting structure comprises the steel liner, a contact grouting pipeline and a backfill grouting pipeline; the contact grouting pipeline comprises main contact grouting pipes and branch contact grouting pipes branching from the main contact grouting pipes, wherein the branch contact grouting pipes are arranged on the outer wall of the steel liner; the backfill grouting pipeline comprises main backfill grouting pipes and branch backfill grouting pipes branching from the main backfill grouting pipes, wherein the branch backfill grouting pipes are arranged on the outer wall of the steel liner. According to the large-diameter high-strength pressure pipeline grouting structure and method, the complex processes of manufacturing of the steel liner and hole sealing welding are omitted, the high requirement for environment temperature and humidity is greatly lowered, and the construction period is shortened.

Description

technical field [0001] The invention relates to a large-diameter high-strength pressure pipeline grouting structure and a grouting method, in particular to a large-diameter high-strength pressure pipeline grouting structure and a grouting method applied in the field of building construction. Background technique [0002] The new grouting method for high-strength pressure pipelines involved in the present invention refers to water delivery pressure waterways that are suitable for high water head, large flow rate, and large diameter, that is, 10m and above, and require high-strength steel lining, especially in water conservancy and hydropower projects. Pressure piping. The product of water head and diameter of this kind of diversion channel or pipeline is often larger, at 3000mm 2 Above, the tensile strength of the steel lining used is higher than 610MPa. Compared with the traditional engineering experience, concrete backfill grouting, surrounding rock consolidation grouting...

AI Technical Summary

Problems solved by technology

Compared with the traditional engineering experience, concrete backfill grouting, surrounding rock consolidation grouting and steel plate contact grouting need to reserve openings on the steel lining and carry out hole reinforcement. higher requirements, which is unfavorable to the construction period

Therefore, there is no grouting structure and grouting method for large-diameter high-strength pressure pipelines in the prior art that are simple in structure, do not need to reserve openings on the steel lining, are simple to operate, and can effectively save construction time

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