Q:The periphery of the tunnel outline has been sealed with steel seal, and can be used as the external formwork when the concrete is poured. The 3 parts of the tunnel are divided into floor, side wall and roof. When pouring, the concrete can only be pumped in the tunnel, the outside of the tunnel is the Pearl River, and the construction can not be carried out outside the tunnel. The roof pouring, only from the bottom to the pump. Question: 1, the roof concrete pouring, how to discharge the air? How to tamper? 2, the tunnel width of 23 meters, you need to do the construction of the seam or after pouring it? Time is pressing, please reply as soon as possible. Good addition score. Thank you。 If you can't see the picture, click this link:

The floor concrete is made by the method of subsection pouring, the length of each section is about 16 ~ 24m, and the construction joint is kept between each construction section. After pouring concrete floor, due to the need for roughly 7 days to meet the design requirements of concrete strength, to remove the floor above the first steel purlin and support. During this period of time can be the first construction of steel bars and formwork works, and then the construction of the outer wall of the leveling layer and the wall of the waterproof layer.

Q:What is the role of the grid steel frame and steel mesh in the power tunnel

Advanced small pipe grouting small catheter with a diameter of 32-50mm steel pipe, the pipe tip and tube holes for special processing. The first row with drill drilling pipe. Row spacing is 30cm, fan shape, elevation of 5 degrees to about 8 degrees. The length is 2.25m, a single fluid grouting (cement) or double grout (cement water glass slurry). Adjust the grouting pressure according to the soil.

Q:What is the first project of tunnel constructionNow to do some of the tunnel program, you need to be the first to list out, a total of what? I know that the first branch, two lining, inverted arch, tunnel, pavement these

The first project of concrete lining of this section as I bid the tunnel project, on the next two plays a role model leading lining construction, so the various factors must be considered in detail, before the construction plan, reasonable arrangement, strict control of construction process, construction timely summary, finally reached the first the United States, the project entity information is true and complete, the project finished good target

Q:1 tunnel lighting design steps, 2 teacher said to design a template, is not to create a tunnel, and then according to the numerical calculation of what?

When the light into the human eye increases, the pupil contraction, when the surrounding environment becomes dark; into the human eye when the light is reduced, the pupil increases.

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

The utility model is mainly composed of a simple lining trolley, a full hydraulic automatic walking lining trolley and a grid type lining trolley. Full hydraulic lining trolley can be divided into the side and roof arch, circular needle beam, bottom mold, full circle needle beam through type etc.. It is also widely used in the construction of hydraulic tunnel and bridge that the lifting sliding mode, the lifting sliding mode and the turning mode, etc..

Q:The tunnel structure of plastic mould

Tunnel construction, due to the wall and floor can be cast at the same time, therefore, the design of the building has the following requirements.(1) the width and height of the room should be relatively constant, and the thickness of the bearing wall should be consistent.(2) there are two longitudinal walls inside the corridor, and the upper and lower layers are thick enough to adjust the depth of the rooms on both sides.(3) the thickness of the floor should be kept constant.(4) the basic unit of the structure must be open on one side, and the large span can be opened on both sides.(5) the arrangement should be avoided in the plane.

Q:How many meters can be poured in the first floor of the 2 level of the surrounding rock of the railway tunnel?

And these kinds of excavation methods need to determine the number of excavated meters according to the grade of surrounding rock. Tunnel invert and floor is completed after the initial support (that is, shotcrete, a layer of concrete, in the excavation of rock on some hard rock without vertical spray arch thin, weak surrounding rock shall be sprayed on the vertical arch thickness in this special project map will show) for pouring 2 reinforced concrete lining when left in general is 6~12 meters

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.