Construction method for grouting reinforcement of sleeve valve pipe

Abstract

The invention discloses a construction method for the grouting reinforcement of a sleeve valve pipe, comprising the following steps of: firstly, drilling a hole; secondly, inserting a grouting pipe B into the grouting drilled hole; thirdly, inserting a grouting pipe A into the grouting pipe B; fourthly, sealing the hole; and fifthly, performing grouting. The grouting pipe B is inserted into the grouting drilled hole down to the bottom of the hole with the top exceeding the ground. In the step of inserting the grouting pipe A into the grouting pipe B, a lower blank cap is added to the bottom of the connected grouting pipe A, and the grouting pipe A and the lower blank cap are slowly inserted into the grouting pipe B section by section. After the grouting pipe A is inserted to the bottom of the grouting pipe B, hole sealing slurry is fully injected between the gap between the grouting pipe B and the soil body; after the hole sealing slurry is injected, water is fully injected in the grouting pipes; the grouting pipe B may not float under the action of gravity; and then the pipe A is pulled out slowly; and finally, an upper blank cap is arranged to cover the upper part of the grouting pipe B. Furthermore, reinforcement slurry is injected in 48 hours after the hole sealing slurry is injected; grouting is performed in a sectional injection manner; and the step distance of grouting is 0.6-1 m.

Description

technical field [0001] The invention relates to a grouting reinforcement construction method for a sleeve valve pipe. Background technique [0002] The sleeve valve pipe grouting reinforcement construction method is a grouting method pioneered by the French Soletanche grouting company, so this method is also called the Soletanche method. Because this method has many advantages and the grouting effect is good, it is widely used abroad. At present, there are few researches and applications of this method in China. In practical application, this construction method has gradually exposed problems such as complex construction technology, high price of grouting pipes, and easy occurrence of grouting and pipe jams during the grouting process. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a sleeve valve pipe grouting reinforcement construction method that occupies less space, is convenient for construction, and has a...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a sleeve valve pipe grouting reinforcement construction method that occupies less space, is convenient for construction, and has a significant reinforcement effect, so as to overcome the complex construction process and high price of grouting pipes in the prior art , In the process of grouting, it is easy to have problems such as grouting and pipe jamming

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