Q: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.

Q:What is the simple calculation method of the tunnel excavation unit price

Fully integrated unit price = labor + material equipment + + + + + + + management fees

Q:Tunnel construction procedure A cycle of steps

Tunnel construction process, the first branch is a temporary payment, two lining is a permanent support.1, the hole before the edge, the construction of the slope (including drainage, electricity, etc.);2, the construction of large pipe shed3, measurement positioning line;4, drilling, blasting;5, slag, playing anchor, steel, injection (including the initial spray and spray)6, ahead of the anchor (after the pipe section)7, measuring the line;

Q:What is the role of the tunnel formwork trolley? What is the use of template trolley?

The use of full circle wear line; side and roof arch lining are most commonly used, two concrete lining construction commonly used in highway, railway tunnel and underground cavern.

Q:What are the reasons for the two lining concrete lining of the tunnel?

(4) improper concrete mix, segregation, depending on the template part of the lack of slurry or template serious leakage;(5) no watering wood template wet, water bonding or early form removal, Chaimo missing edge off angle, resulting in reinforcement.

Q:I would like to ask the tunnel hydraulic trolley steel template design is the use of what software

Tunnel lining trolley design software is CAD, the use of the software for the design of the structure

Q:I would like to ask the high-speed rail tunnel invert small side wall and arch with the small side of the wall of the hanging formwork of what a good method?

The pouring of inverted arch and the pouring of the short side wall, do not step in place, install the side die on the invert

Q:For example, lining, invert, bias and so on words,, to answer the full thank you

You haven't even touched the tunnel. Simply to say that the lining is the use of concrete or reinforced concrete tunnel inside the template pouring. The author is to stabilize the stability of the rock itself, followed by the tunnel in order to facilitate the application of.

Q:What is the width of a ring in a tunnel

The car is generally long 9m can be a one-time pouring, a ring is a pouring two lining length

Q:How to design the general layout of the tunnel construction organization design

A very simple plane diagram, indicating the location of the tunnel, into the construction of the sidewalk and the construction of sidewalks, mixing stations and storage yard, air compressor unit location