Water leakage treatment structure for transverse seam of concrete gravity dam

Abstract

The invention discloses a water leakage treatment structure for a transverse seam of a concrete gravity dam, relates to the field of water conservancy and hydropower engineering, and provides the water leakage treatment structure, which can meet water blockage requirements and can quickly and efficiently construct, for the transverse seam of the concrete gravity dam. The structure comprises a gravity dam with a plurality of dam sections, wherein the transverse seam is arranged between adjacent two dam sections; a water stop band for preventing the transverse seam from leaking water is formed in the gravity dam; a cement grouting hole and a water-blocking plug grouting hole are formed in the gravity dam; the water-blocking plug grouting hole and the cement grouting hole are formed across the transverse seam, and extend to the dam bottom from the dam top of the gravity dam; the water stop band, the cement grouting hole and the water-blocking plug grouting hole are sequentially formed from the upstream to the downstream in the water flow direction; a water blocking plug formed by chemical grouting is formed in the water-blocking plug grouting hole; and a cement filling structure formed by cement grouting is arranged in cement grouting hole and the transverse beam from the water stop band and the water blocking plug. The water leakage treatment structure can be used for sealing the transverse seam when the transverse seam of the concrete gravity dam leaks water.

Description

technical field [0001] The invention relates to the field of water conservancy and hydropower engineering, in particular to a water leakage treatment structure for transverse joints of concrete gravity dams. Background technique [0002] Concrete gravity dam: It is a large-volume water-retaining structure built of concrete. Its basic section is triangular. The pressure generated by its own weight counteracts the tensile stress caused by water pressure to meet the strength requirements. [0003] Transverse joints of the dam body: they are joints perpendicular to the axis of the dam, mainly used to reduce the longitudinal constraints of the dam body to adapt to the uneven settlement and temperature changes of the foundation during the operation period, and to avoid cracks in the dam body when uneven settlement of the foundation occurs. [0004] Transverse joints are seepage channels, so waterstops are usually set in dam transverse joints. On the one hand, the waterstop is ea...

AI Technical Summary

Problems solved by technology

[0022] The advantage of this scheme is that it can find out the exact defective part of the transverse joint, and can completely and thoroughly carry out leakage treatment, and the effect is reliable. The disadvantage is that the economic loss of power generation is huge, and the treatment cost is extremely high

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