Sales of fully automatic small pipe punching machine, precise and advanced small pipe punching machine

Description :

　　Sales of fully automatic small pipe punching machine, precise and advanced small pipe punching machine

　　Punching machines have been widely used in tunnel construction. The punching machine can set 200 holes on one pipe, and the machine is matched with a servo motor. The hole spacing error is within ± 0.3mm, and the punching speed is fast, which greatly improves the manual cutting speed compared to before. The circular holes are also relatively neat and beautiful.

　　The small conduit bears the pressure of the formation during excavation. To ensure grouting and prevent leakage, a sealing hole needs to be set at the tail of the small conduit.

　　The grouting method should be selected according to the soil conditions for grouting construction: infiltration grouting method should be used in sand and gravel formations; It is advisable to use infiltration grouting method in sand layers; Splitting or electric silicification grouting method should be used in clay layers; It is advisable to use high-pressure grouting method in the soft soil layer of silt. The grouting material should have good injectability, and after solidification, it should have a certain strength, impermeability, durability, and small shrinkage. The grout should be used, and the grouting process should be simple and convenient. The selection and proportioning of grouting materials should be determined based on engineering conditions, and the sales of fully automatic small pipe punching machines with precision and advanced small pipe punching machines should be determined through testing.

　　The mix proportion of grouting slurry meets the design requirements. Fill the conduit and surrounding voids with slurry; The allowable deviation for advanced small conduit construction shall comply with the provisions in the table below. Due to the differences in tunnel construction areas and geological structures, in the construction of weak and fractured rock layers, advanced small conduits play a reinforcing role in the loose rock layers. After grouting, the stability of the loose and weak surrounding rock is enhanced, which is beneficial for the stability of the surrounding rock after excavation and during the initial support period, so as not to cause instability and damage to the surrounding rock until collapse. The use of advanced small conduits is a very effective auxiliary construction method to stabilize the excavation face before tunnel construction excavation. What issues should be noted during the advanced small pipe grouting process. The diameter of the advanced small conduit should be selected and processed according to the design requirements, and the length should meet the design requirements. The longitudinal overlap length should not be less than 1.0m. When combined with the steel frame for support, it should pass through the belly of the steel frame and weld the tail end to the steel frame. Advanced small pipes are generally sold using seamless steel fully automatic small pipe punching machines with a diameter of 38-50mm.

AfterSalesService :

• Fully automatic small pipe punching machine