Advanced steel pipe shrinking machine, precision constant small pipe pointed machine, supplied by the manufacturer

Description :

　　Advanced steel pipe shrinking machine, precision constant small pipe pointed machine, supplied by the manufacturer

　　The small pipe taper machine plays a crucial role in the construction industry. A small conduit is an indispensable step in construction, as it can effectively penetrate into the wall. The pointed end at the front is relatively easy to penetrate, and the small holes on the steel pipe wall are added to enhance the strength of the surrounding rock. The small tube taper machine has a fast taper speed, and the taper of a pipe can be completed within one minute.

　　1. Compact and lightweight.

　　2. Strong force, the pipe joint can be tightened in one step.

　　3. Energy saving: The average electricity consumption during operation is 15 kWh.

　　4. Durability: Due to the advanced technology design of the hydraulic part and important friction components, the eight valve seat has a double inclined surface. During operation, the front and rear double conical surfaces are simultaneously compressed, which not only decomposes the friction coefficient but also causes equivalent trace wear, increasing the service life of this part by more than four times that of a single inclined surface.

　　5. Safe and easy to operate: The machine process determines that there will be no dangerous accidents caused by frontal collision: operate according to the instructions.

　　6. Low noise: This equipment has very low noise and is an environmentally friendly equipment. It is supplied by the manufacturer of advanced steel pipe shrinking machine, precision constant small pipe pointed machine

　　Selection of grouting parameters

　　(1) The small conduit is made of seamless steel pipe with a diameter of 42 and a length of 3.5m. A 6-8mm drainage hole is arranged within a range of 2.5m at the front end of the pipe body, with a hole spacing of 20-30cm. The structure of the small conduit is shown in the figure. Schematic diagram of small catheter

　　2018/11/27 Tunnel advanced small conduit construction

　　The small conduit is arranged outside the initial support contour line of the tunnel, within a range of 120 ° of the arch, with a circumferential spacing of 30cm. (2) The grouting parameters use ordinary 425 # cement; Water cement ratio of 1:1-1:1.2; The volume ratio of cement slurry to water glass is 1:1-1:0.8; Gel time: 30 seconds to 3 minutes; According to the preliminarily selected mix proportion, measure the gel time until the gel time requirements are met, and determine the construction mix proportion. Grouting pressure 0.3MPa, grouting termination pressure 1.0-1.5MPa; The slurry diffusion radius is 0.3-0.5m, and the advanced steel pipe shrinking machine is supplied by the manufacturer of the precise and constant small pipe pointed machine;

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• Advanced steel pipe taper machine