What are the common methods of foundation pressure grouting reinforcement, this topic has been brought up recently, take this opportunity, the following is a related article introduction for your reference.
Ground pressure grouting reinforcement is a commonly used foundation treatment method, which improves the physical properties of soil or rock layer by injecting grout and improves the bearing capacity and stability of the foundation. The following is a detailed introduction to the common methods of foundation pressure grouting reinforcement from many aspects:
1. Selection of grouting materials: according to the specific conditions of the foundation and the purpose of reinforcement, select the appropriate grouting materials, such as cement slurry, polymer slurry, silicate slurry, etc. Different materials have different characteristics and scope of application, and need to be selected according to the actual situation.
2.Arrangement of grouting holes: The arrangement of grouting holes should be planned according to the load and geological conditions of the foundation. Usually use linear, surface or mesh distribution to ensure the uniform distribution between the grouting holes and improve the reinforcement effect.
3.Control of grouting pressure and flow: The control of grouting pressure and flow rate is an important factor to ensure the grouting effect. The grouting pressure should be adjusted according to the condition of the foundation, and it is generally controlled at 03-0.between 6MPa; The grouting flow rate should be appropriate, too large will cause uneven slurry penetration, too small will not be able to achieve the reinforcement effect.
4.Selection of grouting methods: Commonly used grouting methods include single-tube grouting, double-pipe grouting, annular grouting, etc. The selection of appropriate grouting methods should consider the situation of the foundation and the construction conditions to ensure that the grouting effect is good.
5.Monitoring and control of grouting technology: real-time monitoring and control are required during the grouting construction process to ensure that the grouting effect meets expectations. Measuring instruments can be used to monitor the grouting pressure, flow rate, pressure around the grouting hole, etc., and adjust the construction parameters in time.
6.Evaluation of reinforcement effect: After the construction is completed, the reinforcement effect needs to be evaluated, and the foundation bearing capacity test, borehole observation and other methods can be used for detection. Based on the results of the assessment, it can be determined whether secondary grouting or other ground reinforcement measures are required.
The common methods of foundation pressure grouting reinforcement involve the selection of grouting materials, the layout of grouting holes, the control of grouting pressure and flow, the selection of grouting methods, the monitoring and control of grouting technology, and the evaluation of reinforcement effects. Reasonable construction steps and control measures can effectively improve the reinforcement effect and ensure the quality and safety of the project.