Micro-pressure grouting reinforcement method and grouting system

By designing a micro-pressure grouting reinforcement system, using the power frame and grouting arm to drive the drill rod down and up the rod, the construction efficiency and quality problems caused by limited underground space are solved, and the drill rod length is maximized and construction efficiency is improved.

CN119686329AActive Publication Date: 2025-03-25CHINA RAILWAY 21ST BUREAU GRP TRACK TRAFFIC ENG
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Patent Information

Application Number
CN202510201865.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-24
Publication Date
2025-03-25
Estimated Expiration
2045-02-24

AI Technical Summary

Technical Problem

In construction environments with limited underground space, it is difficult for the existing technology to effectively utilize the space, resulting in the drill rod being divided into short sections, frequently disassembled and assembled, increasing the construction time and difficulty, and limiting construction efficiency and quality.

Method used

A micro-pressure grouting reinforcement system is designed, including pile machines and power frames. The power frame drives the drill rod down and upper rods through the grouting arm and power head, and uses telescopic cylinders and clamping blocks to achieve long-distance effective strokes of the drill rod and a variety of grouting shapes.

Benefits of technology

Maximize the use of limited space, extend the length of each section of the drill rod, reduce the frequency of joints and the number of joints, improve construction efficiency and quality, and adapt to various diameter rod bodies to meet various construction needs.

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Abstract

The invention discloses a micro-pressure grouting reinforcement method and a grouting system in the technical field of building construction.The micro-pressure grouting reinforcement system comprises a pile machine and a power frame, the power frame comprises a mounting frame and a supporting frame, the supporting frame is rotatably mounted on the inner side of the mounting frame, and a set of grouting arms are slidably connected into the supporting frame; fixed chucks are mounted on the inner sides of the grouting arms, and power heads are connected to the inner sides of the grouting arms in a sliding manner; the whole device can utilize the limited space height to the maximum extent, the length of each section of drill rod is maximized, frequent rod connection is avoided, the number of connectors is reduced, the effective stroke of a power head is maximized, the construction efficiency and quality are improved, meanwhile, the device is suitable for rod bodies with various diameters, various construction requirements are met, and the device is flexible.
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