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When the two lining of the tunnel is used as the lining concrete of the two, how to lay out the trolley
- The first measurement group with total station will be five points (template center, 2 large side mode along the point, 2 small side mode along the projection point) in lofting invert, with nails into the inverted arch concrete as a symbol, and note the nail surface elevation. The trolley positioning, the first to the two lining trolley running mileage, and positioning, positioning process will have been completed two off the top two tight lining lining, free end positioning first center point positioning control of elevation and with a plumb line (top surface elevation is equal to the length of the plumb line + if the mileage of two the center point of elevation can be lining)s
On the measurement of total station
- Steel arch support and Lifang line checking, bottom excavation and invert excavation, lining template checking and lofting, invert pavement template checking, reinforced lofting and lining ditch school inspection, line and template checkings
12 meters of the tunnel car, under normal circumstances, one of the two months to be able to cast a few models?
- According to the normal situation, three days a lining cycle, a month to play at least 9 plates!s
What is the vault vault seal and seal
- The hole in the template above people standing on the head of I welded pipe, connected with concrete pump.s
When the tunnel fight, there is no provision for the number of meters hit
- Fixed strip: the use of additional reinforcement fixation; special fixture fixed; the wire and the fixed template (Figure 2).s
What is the role of the grid steel frame and steel mesh in the power tunnel
- The back cover, shaft ingate construction, to get rid of the upper advanced small pipe grouting reinforced concrete, erecting of ingate upper grille steel frame, injection, get rid of the upper concrete lower reinforced concrete, erecting of ingate to spray the concrete lower grille steel frame.s
How to set the location of the tunnel trolley,
- The next two large positioning along the side mode, re positioning of two small side mode along the point, then turn to check the center point and elevation, if not the positioning deviation is complete, then re adjust the positioning deviation! If you have time to measure the location of the site can be set up, then you do not nail this method, the five points directly to the elevation and mileage can be controlled for a long times
What grade of concrete used for tunnel cushion
- The thickness of the cushion should not be less than 70mm, and the concrete strength grade should not be less than C10;s
Have you ever used aluminium composite material
- Aluminium composite material are usually used at automobile industry,Optical equipment industry, but also at sports products industry that offer danymic in this field. Have you eve...
Basic working principle of automatic door
- How do automatic doors work, the basic composition of the automatic door machine is roughly the same, with more than one, and then with the door signal, you can configure a set of ...
The classification of hinge installation method
- According to the base, the door cover hinge position, can have many different cross classification, according to the spatial features using hinge into four categories, how to use h...
Do you know the price of plasterboard
- Plasterboard are available in both a tapered and a square edge style, both at great prices, so you can choose your favourite and achieve your ideal finish, without concerning yours...
Mount the furniture corner guards on the table
- Mount the furniture corner guards on the table,it can let us use it safely.The present era, more and more people began to pursue fashion,their demand for goods is more and more hig...