Dam piping rescue high polymer closed grouting method

Abstract

The invention discloses a dam piping rescue high polymer closed grouting method. The method comprises the following steps of: injecting a high polymer material into a soil engineering cloth bag at a piping passage port when a piping dangerous condition occurs at a dam, wherein the material is quickly expanded and cured after a reaction so as to quickly block the piping passage port; and injectingthe high polymer material into a piping passage through micropores, wherein the material is quickly expanded and cured after the reaction so as to fulfill the aim of blocking the piping passage, reinforcing a dam body and improving the overall stability of the dam body. The method has the characteristics of good reinforcement effect, high construction speed, contribution to rescue, high pertinence, high controllability, light deadweight and the like. The high polymer closed grouting technology provides a new advanced, high-efficiency, economic and practical method for quick rescue of dam piping and has great application value for danger elimination and reinforcement of the dam.

Description

technical field [0001] The invention belongs to flood prevention and emergency reinforcement technology for dam embankments, in particular to high polymer closed grouting technology for embankment piping emergency rescue. Background technique [0002] In recent years, the safety guarantee of my country's water conservancy infrastructure construction has been highly valued by governments at all levels and widely concerned by the whole society, and the project safety situation is very severe. Among the approximately 87,000 reservoirs that have been built, 40% of small reservoirs and 25% of large and medium reservoirs are dangerous reservoirs. Since 1954, there have been about 3,500 large and small dam failures in my country. In addition, about 280,000 kilometers of dikes have been built across the country, but a large number of dikes have various diseases. Ill and dangerous reservoirs and dikes are weak links in flood control safety during the annual flood season. [0003] ...

AI Technical Summary

Problems solved by technology

However, no matter whether it is to use the method of throwing and filling the reflection layer or the method of grouting, the implementation period is relatively long;

[0012] (2) Poor plugging effect of piping channels

At present, polymer grouting technology is mainly used in foundation reinforcement and road maintenance of industrial and civil buildings. There are no relevant reports on polymer grouting technology for embankment piping rescue in China.

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