Gravity dam upstream face geomembrane anti-seepage and drainage structure and construction method thereof

Abstract

The invention relates to a gravity dam upstream face geomembrane anti-seepage and drainage structure and a construction method thereof. The gravity dam upstream face geomembrane anti-seepage and drainage structure has a simple structure, convenient construction, lower cost and convenient maintenance. The gravity dam upstream face geomembrane anti-seepage and drainage structure is characterized inthat the geomembrane anti-seepage structure is arranged on the upstream face of a gravity dam body; the geomembrane anti-seepage structure comprises a plurality of geomembranes covering the upstream face of the dam body, the geomembranes are fixed to the upstream face of the dam body through an anchoring mechanism, and a plurality of mutually independent anti-seepage partitions are formed betweenthe geomembranes and the upstream face of the dam body through the anchoring mechanism, and the anti-seepage partitions communicate with a drainage gallery in the dam body through a drainage pipe embedded in the dam body. The gravity dam upstream face geomembrane anti-seepage and drainage structure and the construction method thereof are suitable for gravity dams, masonry dams, rockfill concrete dams and the like.

Description

technical field [0001] The invention relates to a geomembrane anti-seepage and drainage structure on the upstream surface of a gravity dam and a construction method thereof. It is suitable for gravity dams, masonry dams, rock-fill concrete dams, etc. Background technique [0002] At present, in addition to the three main dam types of gravity dams: roller compacted concrete gravity dam, normal concrete gravity dam and masonry gravity dam, new types of gravity dams such as rock-fill concrete gravity dams have also been developed in recent years. No matter what kind of gravity dam, the anti-seepage design of the dam body is the focus of the dam structure design, and the construction of the corresponding anti-seepage parts is also the focus of construction quality control. [0003] Although the dam body concrete itself has a certain anti-seepage ability, for gravity dams with high water head or high anti-seepage level, special anti-seepage concrete is generally installed on the...

AI Technical Summary

Problems solved by technology

However, due to many factors affecting the anti-seepage performance of concrete, in addition to the mix ratio, the quality control of the pouring process, curing conditions, and the external working environment will all affect the anti-seepage ability of the finished concrete structure, especially the temperature cracks during the construction process. Generation and interlayer seams at the junction of different warehouse surfaces

Although stone masonry dams and rockfill concrete dams significantly

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