CNC Small Pipe Punching Machine, Jingheng Advanced Small Pipe Drilling Machine Manufacturer

Description :

　　CNC Small Pipe Punching Machine, Jingheng Advanced Small Pipe Drilling Machine Manufacturer

　　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 shall be installed on site by hammering or drilling, and the length of the jacking shall not be less than 90% of the design length. After the installation of the small conduit is completed, the sand and gravel inside the steel pipe should be blown clean with high-pressure air in a timely manner, and the holes and surrounding cracks should be sealed with plastic mud. If necessary, concrete should be placed near the small conduit and the working face to prevent the collapse of the working face. After the installation of the small conduit is completed, it shall be promptly reported to the quality inspection engineer and supervisor for inspection and signature. The advanced small conduit adopts a seamless steel pipe with a length of 3.5m and is arranged within the range above the arch line. The circumferential spacing of the small conduit is 30cm, and the pipe body is arranged with drainage holes in a plum blossom shape, with a diameter of 6-8mm and a spacing of 20cm to 30cm; The end of the small pipe is processed into a pointed tip, and the palm surface is drilled or directly inserted into the CNC small pipe punching machine. It is a manufacturer of advanced small pipe drilling machines.

　　The small conduit bears the pressure of the formation during tunnel excavation. To ensure grouting quality 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; Squeezing and infiltration grouting methods should be used in sand layers; Splitting or electric silicification grouting method should be used in clay layers; It is advisable to use high-pressure jet grouting method in the soft soil layer of silt. The grouting material should have good injectability, and after consolidation, it should have a certain strength, impermeability, stability, durability, and small shrinkage. The grout should be non-toxic, and the grouting process should be simple, convenient, and safe. The selection and proportioning of grouting materials should be determined through experiments based on engineering conditions. During the grouting construction period, it is necessary to monitor whether the groundwater is contaminated, and to prevent the grouting slurry from overflowing the ground or exceeding the grouting range. CNC small pipe punching machine, precision and advanced small pipe drilling machine manufacturer, should be used~

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