Pre support 50 small catheter tip shrinking machine precision constant small catheter tip machine production base

Description :

　　Pre support 50 small catheter tip shrinking machine precision constant small catheter tip machine production base

　　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.

　　The processing range of advanced small conduits is generally about 6 meters. The small conduit is a steel pipe with a wall thickness of 5mm and a diameter of 42mm. It is a method of consolidating the relatively fragmented surrounding rock in front of the palm face through small conduit slurry, so that the surrounding rock forms a whole before proceeding to the next process. The pipe shed is used when the geological conditions at the entrance of the tunnel are very poor (such as sand, severely broken rocks, loess, etc.), with a general length of about 20-30 meters. The pipe shed is a steel pipe with a wall thickness of 3.5mm and a diameter of generally 108mm. Of course, when the geological conditions inside the tunnel are very poor, a pipe shed can also be used (such as when encountering roof collapse in the tunnel, resulting in a large length along the tunnel axis and a large amount of discharge) to pre support the production base of 50 small pipe shrinking machines, precision and constant small pipe pointed machines.

　　process flow

　　The construction technology measures for grouting pipes adopt two methods: electric drill drilling and insertion, or drilling machine jacking; When the soil layer is hard, an electric drill is used to drill and insert pipes, and when it is soft, the drill is used to push in. 3.2 To prevent grout leakage at the hole opening, seal the gap between the grouting pipe and the borehole with a cement coil. 3.3 To prevent blockage of the grouting pipe and affect the grouting effect, clean the grouting pipe before grouting. 3.4 Convenient joints are used between the grouting pipe and the advanced grouting pipe for quick installation and removal. 3.5 The grouting pressure increases from small to large, from a starting pressure of 0MPa to a final pressure of 1.5MPa, and stabilizes for 3 minutes. When the flow meter shows a small grouting volume, the grouting is terminated. After the grouting is completed, remove the grouting joint and quickly seal the grouting pipe mouth with a cement coil to prevent the flow of uncured grout.

　　3.7 Grouting shall be carried out symmetrically from both sides towards the middle, and grouting shall be carried out hole by hole from bottom to top. If there is any grout leakage or running, grouting shall be carried out at intervals to complete the grouting process. 4. Technical measures for grouting construction: 4.1 Strictly control the grouting mix proportion and gel time. After the initial selection of mix proportion, use the gel time to control and adjust the mix proportion, measure the strength of the condensate, and select the mix proportion. 4.2 Strictly control the grouting pressure, the final pressure must meet the design requirements, maintain the stable pressure time, and ensure the penetration range of the slurry. After the grouting is completed, the grouting effect should be inspected. After tunnel excavation, the thickness of the grouting consolidation body can be checked. If it does not meet the design requirements, the grouting parameters can be adjusted during grouting to improve the grouting process. During the grouting process, a dedicated person shall record the grouting situation and adjust the grouting pressure and progress according to the actual situation to ensure the grouting effect and support the production base of the 50 small pipe shrinking machine and the precision constant small pipe pointed machine.

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• Pre support 50 small catheter tip shrinking machine