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

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

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

The car is often used in the construction of hydraulic tunnel, the tunnel is not allowed to have concrete construction longitudinal joints, in the hydraulic tunnel span is large

Q:How the arch of the tunnel concrete pouring up, how to support before pouring, using I-beam is directly support the earth?

Small pipe or large, medium pipe shed is the advanced support for the broken rock area or into, out of the hole, of course, grouting, grouting without losing the significance of the implementation.

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

(3) the concrete pump tube, vibration rod and other mechanical repeated impact, workers trample or vibrator touch bar, caused by displacement and deformation of steel exposed.

Q:What is the vault vault seal and dead seal please give a detailed drawing of the drawing bar do not know how to do?

Directly in the template hole, make a steel plate bolt

Q:Tunnel steel arch behind the steel mesh after a layer of fine iron wire mesh what effect is there?

3, advance small catheter grouting small catheter with diameter of phi 32-50mm steel pipe, the tip of the tube 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: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?

Die casting. Install the inverted L hanger on the side wall.

Q:What are the driving jobs in the tunnel

Control wire measurement in the cave 5) elevation control survey 6) through survey (7)

Q:I would like to know the safety awareness of the tunnel lining formwork trolley Prawns to help answer oh

No special requirements, not special equipmentFirst of all, it must be the track, the sleeper to the sleeper rail

Q:How to fill in the tunnel template

There seems to be a quality inspection form，Send a template to see