Filling construction method for backward slope in rock-fill dam slope treatment

Abstract

The invention relates to a filling construction method for a backward slope in rock-fill dam slope treatment. The filling construction method is applied to construction of the non-solid-foundation backward slope and is characterized in that the backward slope filling treatment is carried out through low-compression materials, and the method specifically comprises the following steps that firstly, a foundation surface and a slope surface are treated; secondly, layer thickness marks are set; thirdly, low-compression material pavement is carried out; fourthly, low-compression material grinding and filling are carried out; and fifthly, the backward slope filling density checking is carried out. In the backward slope treatment method, due to the fact that the grinding or panting or water injection method is adopted in the low-compression materials for construction, the construction speed is high, and the backward slope treatment and dam filling can be synchronously conducted; and accordingly, the overall construction speed is increased. In addition, the application range of the construction method is wide, the construction method is suitable for treatment of the dam slope with the large backward slope degree or the high dam slope and the dam slope with the small top space, and the defect that slurry bricking stone and concrete cannot be treated or problems exist in the treatment is overcome.

Description

technical field [0001] The invention relates to the field of filling treatment of inverted slopes in slope treatment of rockfill dams in the field of construction engineering, especially the technical field of filling treatment of inverted slopes without a solid foundation. Background technique [0002] At present, in the construction process of concrete face rock dams of water conservancy projects, the slope treatment of rockfill dam slopes is usually carried out with mortar block stones or supplementary concrete for slope treatment, or for the lower part of the slope, cutting Slope method for processing. However, for the inversion treatment of extremely high slopes and some unsolid foundations or local no solid foundations, after the inversion treatment is carried out with mortar block stones or supplementary concrete, since the mortar block stones or concrete are rigid bodies, and the foundation is not Subsidence is very easy to occur in solid places, resulting in the su...

AI Technical Summary

Problems solved by technology

However, for the inversion treatment with extremely high slope and some no solid foundation or local no solid foundation, after the inversion treatment is carried out with mortar block stone or supplementary concrete, since the mortar block stone or concrete is a rigid body, and the foundation is not Subsidence is very easy to occur in solid places, resulting in the subsidence of the masonry block or concrete, and after settlement, the masonry block or concrete body is easy to separate from the rock mass and regenerates the downslope, which cannot eliminate the impact of the downslope. The influence of the overall settlement and deformation of the dam body will lead to the deformation of the constructed dam body and even collapse

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