Grouting equipment for shield tunneling machine
In the complex structural system of the shield tunneling machine, the grouting equipment is an indispensable part. It is mainly used to fill the gap between the pipe segment and the tunnel to prevent ground collapse and other potential hazards.
The grouting system of the shield tunneling machine mainly includes the following forms:
Single-liquid synchronous grouting: using a single slurry for grouting operations, it has the characteristics of simple operation and low cost.
Secondary grouting: after the initial grouting, the gap between the pipe segment and the tunnel is grouted again to improve the filling effect and ground stability.
Dual-liquid synchronous grouting: using two slurries of different properties (such as cement slurry and chemical slurry) for synchronous grouting. This grouting method can quickly form a high-strength consolidation body and effectively prevent ground collapse and groundwater leakage.
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Working principle of grouting equipment
The grouting equipment injects slurry into the gap between the pipe segment and the tunnel through a specific pressure device. During the grouting process, the equipment will be precisely controlled according to the set pressure and flow parameters to ensure the grouting effect and ground stability. At the same time, the grouting equipment is also equipped with various sensors and monitoring devices for real-time monitoring of parameters such as pressure, flow and slurry properties during the grouting process, so as to adjust the grouting parameters in time and ensure the quality of grouting.
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Selection and application of grouting equipment
When selecting grouting equipment, the following factors need to be considered:
Project requirements: Select appropriate grouting equipment and grouting parameters according to factors such as the model of the shield tunneling machine, tunnel size and geological conditions.
Slurry properties: Select the appropriate slurry type (such as cement slurry, chemical slurry, etc.) and proportioning scheme according to project needs.
Equipment performance: Select grouting equipment with stable performance, simple operation and convenient maintenance to ensure the smooth progress of grouting operations and grouting quality.
In actual applications, grouting equipment needs to work closely with other systems of the shield tunneling machine (such as tunneling system, excavation system, etc.) to ensure the overall performance and tunneling efficiency of the shield tunneling machine. At the same time, it is also necessary to adjust the grouting parameters and grouting strategies in time according to the progress of the project and changes in geological conditions to cope with various complex situations.
In summary, grouting equipment plays a vital role in shield tunneling machines. By selecting appropriate grouting equipment and grouting parameters, and working closely with other systems, the overall performance and excavation efficiency of the shield tunneling machine can be ensured, providing a strong guarantee for the smooth progress of the tunnel project.