Rock-fill dam deformation control technology

Abstract

The invention belongs to the technical field of hydraulic and hydro-power engineering, and discloses a rock-fill dam deformation control technology which can be applied to diseased rock-fill dams or rockfill deformation control in the hydraulic and hydro-power engineering. The rock-fill dam deformation control technology comprises the following steps of: 1, preparing a pasty stable grouting liquid and cement mortar; 2, drilling holes in the dam body of the rock-fill dam, wherein the holes comprise stable grouting liquid grouting holes for sealing, and filling grouting holes; and 3, grouting: injecting the pasty stable grouting liquid into two rows of holes around a filling grouting area to make the pasty stable grouting liquid and a concrete panel on the upstream side of the rock-fill dam form an enclosed area, injecting the cement mortar into holes in the grouting area in an orifice filling mode after the pasty stable grouting liquid has been injected for 14 days, and controlling the rock-fill dam deformation after the grouting area has been grouted for 28 days. By the rock-fill dam deformation control technology, the deformation resistance of the rock-fill dam can be improved, the deformation of the dam body can be controlled, the grouting quality can be guaranteed, and the rock-fill dam deformation control technology has the advantages of short construction period, high work efficiency and the like.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and is a deformation control technology of rockfill dams, which can be applied to the deformation control of dangerous rockfill dams or rockfill bodies of water conservancy and hydropower projects, and can also be used in some coarse-grained foundations or temporary cofferdams. It is used in deformation control of highly permeable foundation. technical background [0002] Most of the rockfill dams built in my country in the early days were filled by artificial filling or blasting. The dam body is not compact, the porosity is large, and the dam body is seriously deformed, which leads to leakage of the dam body and endangers the safety of the dam. The uniformity is poor, the block diameters vary greatly, and the dam body materials are complex. Commonly used measures mainly focus on anti-seepage reinforcement, which have poor deformation resistance and cannot fund...

AI Technical Summary

Problems solved by technology

[0002] Most of the rockfill dams built in my country in the early days were filled by artificial filling or blasting. The dam body is not dense, the porosity is large, and the dam body deformation is serious, which leads to the leakage of the dam body and endangers the safety of the dam. Poor uniformity, large differences in block diameters, complex dam materials, commonly used anti-seepage reinforcement measures, poor deformation resistance, and cannot fundamentally control the problem of excessive deformation of the dam

At present, there is no grouting technology for the purpose of controlling the deformation of rockfill dams at home and abroad.

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