During this time, I checked my friend's reply and found that many friends are not very clear about the technical guidance of high-pressure grouting reinforcement construction.
Concept: High-pressure grouting reinforcement construction technology is an engineering method that strengthens the foundation, reinforces the rock and soil or waterproofs the soil by injecting the grout into the rock or soil layer at high pressure to solidify it to form a solid brittle body. High-pressure grouting reinforcement is an engineering means, which uses special grouting equipment to inject grouting materials into the ground at high pressure, and improves the physical properties of the foundation by filling the voids of rock and soil mass or combining formation particles.
Steps: The high-pressure grouting reinforcement construction mainly includes preparation, drilling, cleaning, sealing, grouting, curing and monitoring.
1. Preparation: determine the scope of reinforcement, design the grouting plan, purchase the required materials and equipment, and take safety protection measures.
2.Drilling: Drilling holes in the foundation or rock mass according to the design requirements for slurry injection.
3.Cleaning: Clean the borehole to completely remove the impurities in the borehole to ensure the grouting effect.
4.Seaming: Set up a plug pipe or casing around the borehole to prevent slurry leakage.
5.Grouting : A high-pressure grouting pump is used to inject the prepared cement slurry or other applicable solidified material into the borehole.
6.Curing: Wait for the grouting material to solidify into a solid brittle body in the borehole.
7.Monitoring: Carry out the monitoring of the reinforced foundation or rock mass to check the construction effect and the stability of the solid.
Scope of application: High-pressure grouting reinforcement construction technology is widely used in underground engineering, foundation reinforcement, foundation treatment, rock mass support and waterproof repair. The specific scope of application includes, but is not limited to, the reinforcement of subway tunnels and basements, the reinforcement of reservoir dams, pile foundations and foundation foundations, the repair of ground subsidence, groundwater gushing and groundwater leakage, and the stabilization treatment of rock mass.
Related content: The key to high-pressure grouting reinforcement construction technology is to choose the right grouting material and master the appropriate construction method. Commonly used grouting materials include cement slurry, concrete slurry, epoxy resin slurry, etc. The construction method should be determined according to the specific engineering requirements and geological conditions, and may include different grouting methods such as single-hole grouting, double-hole grouting, and multi-hole grouting. In engineering practice, high-pressure grouting reinforcement construction technology often involves the control of grouting parameters, the optimization of construction technology and on-site safety management.