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What is the concrete construction of the tunnel invert
- It is not required to ensure the appearance of the concrete, is the high pressure jet, the rapid solidification type.s
12 meters of the tunnel car, under normal circumstances, one of the two months to be able to cast a few models?
- If the reinforcement in advance or tied to the design of no reinforcement, the normal situation down the car, plus the plug plate, pouring concretes
What are the safety awareness of the tunnel lining formwork trolley?
- Two during the 1 excavation of earthwork calculating boundary line is important??? 2 measuring points as far as the standards
What is the specific structure of the tunnel model
- In the use of the whole tunnel mode is not as flexible as semi tunnel mode, the lifting equipment requirements are higher, it is gradually being semi tunnelMode substitution.s
Tunnel construction sequence What is the sequence of construction process
- Measuring and setting out the drill hole charge blasting, ventilation, smoke exhaust, water spraying and dust removing, the top of the vertical arch, the anchor rod and the reinforcing steel net, the spraying concrete operation enters the next cycle, and the first branch is stabilized and then the two lining is applieds
What is the simple calculation method of the tunnel excavation unit price
- Comprehensive unit price methodAs the calculation method of this method and the project of comprehensive unit price, is calculated according to the real need of engineering cost measures the amount of consumption and real price, applicable to the calculation of the amount of engineering projects, mainly refers to the number of entities are closely linked and engineering projects, such as concrete formwork, scaffolding, vertical transportation etc.. Different from the sub project, it is not required that the comprehensive unit price of each measure must include the labor cost, material cost, mechanical cost, management fee and profit.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
What are the driving jobs in the tunnel
- Control wire measurement in the cave 5) elevation control survey 6) through survey (7)s
What are the characteristics of corner protectors for walls?
- Introduction of corner protectors for walls：As the name suggests,corner protectors for walls is used to protect the corner. Corner protection is often neglected by people,when yo...
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 ...
Have you done your business with aluminium composite panel manufacturers
- Aluminium composite panel are usually used at building construction, houses, but also at some factories in this field. Have you ever heard of aluminium composite panel?Features of ...
what is the difference between quartz and granite
- What is the difference between quartz and granite？The quartz stone is made of quartz and resin.The hardness reaches 7 degrees, while the granite is composed of marble powder and ...
what is basalt used for
- What are composite doors？Basalt is a kind of high-quality traffic building stone.Especially in the construction of highway, railway, port, airport runway,it is one of the best co...