Assembled and combined type grouting pipe assembly capable of simultaneously pouring single grout and double grout

Abstract

The invention discloses an assembled and combined grouting pipe assembly capable of simultaneously grouting single grout and double grout. The assembled and combined grouting pipe assembly comprises agrout outlet pipe, a single-grout grouting pipe assembly and a double-grout grouting pipe assembly, wherein a middle channel of the grout outlet pipe is a single grout flow channel, a double grout cavity is formed in an interlayer of the pipe wall of the grout outlet pipe, and a plurality of double grout outlet holes communicating with the double grout cavity are uniformly formed in the pipe wallof the outer side of the grout outlet pipe; one end of the single-grout grouting pipe assembly is detachably connected and communicates with the upper end of the single-grout flow channel, and the other end of the single-grout grouting pipe assembly is connected with a first grouting pump; and one end of the double-grout grouting pipe assembly is detachably connected and communicates with the upper cavity wall of the double-grout cavity, and the other end of the double-grout grouting pipe assembly is connected with a second grouting pump. The single grout flows out through the single-grout flow channel, the double grout flows out through the double grout outlet holes, the double grout with poor fluidity can prevent the single grout with good fluidity from flowing away along with water flow, cracks and the like within a certain range, the single grout with good fluidity can carry the double grout with poor fluidity to fill the whole reinforcing area, and the rock stratum grouting reinforcing effect is improved.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, and more specifically relates to an assembled combined grouting pipe assembly capable of pouring single and double grout at the same time. Background technique [0002] Grouting reinforcement is the most widely used foundation reinforcement method in geotechnical engineering. Grouting reinforcement usually injects cement slurry into the formation to achieve the purpose of improving the formation. However, underground rock and soil are often uneven, and cracks, karst caves, and groundwater flow often occur. If you encounter these situations, if you only inject a single slurry such as cement slurry, the fluidity of the cement slurry will follow the cracks and water flow. Waiting to flow away, but unable to gather at the predetermined position, so that the purpose of reinforcement cannot be achieved; if only double-slurry such as cement-water glass mixed slurry is injected, due to t...

AI Technical Summary

Problems solved by technology

However, underground rock and soil are often uneven, and cracks, karst caves, and groundwater flow often occur. If you encounter these situations, if you only inject a single slurry such as cement slurry, the fluidity of the cement slurry will follow the cracks and water flow. Waiting to flow away, but unable to gather at the predetermined position, so that the purpose of reinforcement cannot be achieved; if only double-slurry such as cement-water glass mixed slurry is injected, due to the poor fluidity of the double-slurry slurry, it is easy to gather, but if only the double-slurry slurry is injected, the slurry It often only gathers in a small area, but cannot fill all the reinforcement area, and the reinforcement effect is poor

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