A construction method of a cemented dam

Abstract

The invention provides a cementing rockfill dam and a construction method thereof, and relates to the technical field of novel dam construction materials for water conservancy and hydropower projects.The cementing rockfill dam includes a plurality of construction layers which successively stacked, each construction layer contains a first cementing gravel layer, a cementing rockfill layer and a second cementing gravel layer which are successively stacked from bottom to top, and the particle sizes of aggregates in the cementing rockfill layers are greater than 150 mm; and the particle sizes ofthe aggregates in the first cementing gravel layers and the second cementing gravel layers are smaller than or equal to 150 mm. A sandwich spreading and rolling dam construction method is adopted, anupper material can be laid before a lower material dries and solidifies, the aggregates with the particle sizes larger than 150 mm can be utilized, and the pedigree of the cementing dam construction materials is further broadened; and the efficiency of dam construction is improved, the cementing performance of the dam aggregates is improved, the interlayer bonding performance is improved, and thestability of a dam body is enhanced.

Description

technical field [0001] The invention relates to the field of novel dam-building technology of water conservancy and hydropower projects, in particular to a novel cemented dam composed of cemented sand and gravel and rockfill and a construction method thereof. Background technique [0002] As a large-scale building, water conservancy and hydropower projects consume a lot of building materials. For example, a 20m-high Xiaoshantang gravity dam on a stream can consume 10,000-20,000m 3 of concrete. Water conservancy and hydropower projects generally do not require meticulous workmanship of building materials, high-standard and high-configuration, or the purchase of professional high-grade commercial concrete. Water conservancy and hydropower projects generally pay attention to ①selecting nearby materials, ②making full use of local natural aggregates or artificial waste materials, ③simplifying the production process of aggregates, and ④reducing the amount of cement and other adh...

AI Technical Summary

Problems solved by technology

It solves the problem that the aggregate particle size used in hydraulic construction materials is limited to a maximum of 150mm in the prior art, and the problem that the construction quality reliability is low although aggregates with a particle size above 150mm can be used

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