Shield Tunnel Backfill Grouting Detection Equipment
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Solution Overview
Problem
Current methods for backfill grouting in shield tunnel construction lack real-time automatic detection capabilities, leading to difficulties in controlling grouting parameters and quality, which can result in ground surface settlement, tunnel deformation, and economic losses due to manual and post-construction detection methods.
Innovation Solution
The development of loaded-to-frame detection equipment incorporating a ground penetrating radar, servo controller, drive motor, and conveyor belt system that allows for real-time, automatic detection of backfill grouting, enabling continuous monitoring and adjustment of grouting parameters through a network-connected radar acquisition box and visual software analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If manual field measurement and recording are used for backfill grouting detection, then the detection can be performed after tunnel construction is completed, but the ground surface settlement has occurred for a long time and the detection significance is reduced
Solution Approach 1:
The detection equipment is installed on the shield machine frame to perform detection during the tunneling process itself, before ground settlement occurs. The ground penetrating radar detects backfill grouting quality in real-time as the shield advances, allowing immediate identification and correction of grouting defects before they cause structural damage or surface settlement.
2Ease of operation
If manual detection methods are used, then the detection process can be performed, but the detection is easily restricted by field conditions and has relatively low stability
Solution Approach 1:
Manual detection operations are replaced with an automated mechanical system. The ground penetrating radar is mounted on the shield machine frame and automatically scans the backfill grouting as the machine advances. The radar acquisition box and computer automatically process and analyze the detection data, eliminating manual measurement errors and improving detection stability and repeatability.
3Productivity
If synchronous grouting is performed based on manual experience, then the grouting operation can be conducted, but the shape and filling degree of grouting body cannot be determined effectively
Solution Approach 1:
The ground penetrating radar provides real-time feedback on the shape, thickness, and filling degree of the backfill grouting body. The detection data is processed and displayed on a computer screen during the grouting operation, allowing operators to immediately assess grouting quality and adjust grouting parameters to achieve the desired grouting body characteristics.
4Extent of automation
If real-time automatic detection equipment is not developed, then the current manual methods continue to be used, but equipment for real-time automatic detection of backfill grouting is urgently needed
Solution Approach 1:
The detection equipment is integrated onto the shield machine frame, utilizing the existing mechanical structure and movement system of the shield machine. The ground penetrating radar, support structure, and data processing system work together as a unified multi-functional unit that performs detection while the shield machine performs its primary tunneling function, reducing the need for separate dedicated detection equipment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables real-time detection and adjustment of backfill grouting, improving construction quality, stability, and safety by providing immediate feedback on grouting thickness and distribution, reducing the risk of tunnel deformation and economic losses.
Implementation Method 1
a ground penetrating radar 1, a servo controller 2, a drive motor and reducer 3
Implementation Method 2
the ground penetrating radar 1 can move along the assembly type track at a uniform speed and perform discontinuous detection at equal time intervals
Data Source
AI summary
The present invention relates to a loaded-to-frame detection equipment for backfill grouting of a shield tunnel, including an automatic loaded-to-frame transmission apparatus, a ground penetrating radar, and an intelligent backfill grouting processing and analysis software. The equipment is integrated by using software and hardware, and can implement real-time visual detection of a backfill grouting layer in a shield construction process. The loaded-to-frame automatic transmission apparatus mainly includes a track, a synchronous belt, a transmission mechanism, a servo machine, and a drive and reducer; and a new air-coupled radar detection apparatus is carried on the loaded-to-frame automatic transmission apparatus and is installed on a shield frame. With the shield performs tunneling, circular detection on a grouting body of the shield and visual layered display of the grouting body are implemented.