• Categories:news
• Author:
• Origin:
• Time of issue:2020-04-30 08:39
• Views:

(Summary description)In the pipe jacking project, the relay room is almost not used up and down 70m. During the operation, the thixotropic mortar should be applied according to the full size of the jacking, and there is no doubt that it should be taken into account in the budget quota. There is a small round hole on the pipe of the reinforced concrete of the building to introduce the thixotropic mortar. After the pipe jacking project is completed, the relay room is kept as a section of water pipe, and the hydraulic cylinders and other machinery and equipment inside must be disassembled to ensure the smoothness of the pipeline. The key to solving the necessary relay rooms after disassembly of machinery and equipment is to ensure airtightness. If it is a seamless steel pipe, the compressive strength of electric welding must be considered. The solution of the relay room is a technical problem in the pipe jacking project. Expansion materials: The relay room is installed at a certain position of the one-time jacking water pipe. This section of the one-time jacking pipeline is divided into several pushing sections. During the whole process of jacking, the water pipes are firstly connected by several relay rooms according to the sequence of procedures. After pushing a small distance, the main top hydraulic cylinder pushes the water pipe in the last section, which is an engineering construction method that repeatedly pushes the water pipe from the working pit to the pressing pit. Generally, the application relay room must be considered when the pipe jacking construction distance is relatively long. The relay room is composed of the front cover and the rear cover of the hydraulic jack. The front cover is connected to the front butt connection, the rear cover is connected to the rear butt connection, the front and the left, the left and the right cover are plug-in connection, and the two are sealed by the waterstop to prevent the soil water and slurry from being poured into the pipeline. Inside, the steel shell structure is deeply processed to ensure that it does not deform during the entire application process. The diameter of the casing of the relay room is the same as that of the pipe culvert, which can reduce sand vibration, ground collapse and jacking friction resistance.