360 degree rotating small pipe punching machine, precise slope support small pipe drilling machine

Description :

　　360 degree rotating small pipe punching machine, precise slope support small pipe drilling 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 slurry of the small pipe punching machine is used for filling, splitting, etc., to replace the water and air between soil particles and rock cracks, occupying their positions. After a certain period of time, it solidifies and binds the original loose soil particles or cracks into a whole, forming a structurally new, strong, and well waterproofed consolidation body, which greatly reduces the loose and broken state of the surrounding rock. The determination of various parameters for the construction of advanced small conduits should be based on the geological conditions of the surrounding rock boundary and the principle of support. Advanced small conduits are a very effective auxiliary construction method for excavation work faces. In the construction of weak and fractured rock layers, advanced small conduits play a reinforcing role in loose rock layers. After grouting, the properties of loose and weak surrounding rock are enhanced, which is conducive to the stability of the surrounding rock after excavation and during the initial support period, so as not to cause instability and collapse of the surrounding rock. Advanced small pipe grouting is suitable for soft surrounding rock in arch areas, loose, non bonded soil layers, sand layers with poor self stabilization ability, and broken rock layers such as gravel (pebble) layers. The 360 degree rotating small pipe punching machine is used for precise slope support and small pipe drilling machine.

　　The variety and specifications of steel pipes used for small conduits must comply with the requirements of the construction drawings. Grouting fluid adopts cement slurry, and its mix ratio must meet the requirements of the construction drawing. The grouting fluid shall have good fluidity. The groutable gel time can be adjusted as required. The shrinkage is small when curing. The bonding force between the grout and the surrounding rock concrete sand is strong. The consolidation body has high strength and good impermeability, stability and durability. The grouting materials and the consolidation body are harmless to human body without odor and pollution. The required grouting process and equipment are simple, safe and convenient to operate. Generally, cement-based grout with a strength grade not lower than R should be used, and chemical grout should not be used. The quality inspection standards for the installation of steel mesh and steel frame require that the allowable deviation for the construction of small conduits must comply with the specifications in the table below. The grouting mixture ratio should be designed, and engineering tests should be conducted to determine the 360 degree rotating small conduit punching machine and precision slope support small conduit drilling machine.

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• 360 degree rotating small pipe punching machine