Recently, many friends have consulted the relevant content of the interpretation of railway subgrade sinking grouting technology, and the following is a summary of relevant knowledge points, I hope it will help you.
Concept: Railway subgrade sinking grouting technology refers to a construction technology that fills the void in the subgrade and improves the stability and bearing capacity of the subgrade by injecting cement slurry under the railway subgrade. This technology is suitable for the repair, reinforcement and prevention of subsidence of railway subgrades.
Construction process: 1. Trenching: It is necessary to excavate a trench next to the roadbed that needs to be repaired or reinforced, form a construction channel, and remove debris and soil.
2.Drilling: The drilling operation is then carried out on the drilling tool next to the trench, the depth of which depends on the degree of damage to the roadbed and the size of the void to be grouted.
3.Grouting: The pre-prepared cement slurry is injected into the borehole through the grouting equipment, and the grouting should be gradually carried out from the bottom of the hole to the top of the hole to ensure that the grout fully fills the subgrade void.
4.Subgrade restoration: After waiting for the slurry to solidify, the subgrade surface is restored and trimmed as needed.
Precautions: 1. On-site survey and design should be carried out before construction to determine the specific parameters and plans of construction.
2.The selection and commissioning of grouting equipment is very important to ensure that the grout is injected from the bottom of the borehole and to guarantee the uniformity and stability of the grouting.
3.The ratio of slurry needs to be adjusted according to the actual situation to ensure the construction effect and material consumption.
4.During the construction process, attention should be paid to protecting the environment and surrounding facilities to prevent slurry overflow and pollution to the surrounding environment.
5.After construction, the construction area needs to be monitored and maintained to ensure the long-term stability and safe operation of the railway subgrade.
The subsidence grouting technology of railway subgrade can effectively improve the stability and bearing capacity of subgrade. During the construction process, it is necessary to pay attention to every link of the construction process to ensure the construction quality and project safety. According to the specific project needs, it is also very important to choose the appropriate grouting equipment and grout ratio. Monitoring and maintenance of the roadbed after construction can ensure the normal operation of the railway.