Hydraulic and Hydroelectric Tunnel

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Hydraulic and Hydroelectric Tunnel

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: 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:: Concrete construction technology of tunnel roof:Due to the main roof, the floor of a large amount of concrete pouring, consider the construction period and other factors, the site is equipped with 2 sets of automotive pump or HBT60 pump and 300m Phi pipe and a variety of accessories.

Q: How the tunnel template is calculated: The man's answer is analysis procedure of tunnel structure analysis of finite element modeling.The design of tunnel lining formwork and support must have enough strength, rigidity and stability. The utility model has the advantages of no convex concave, no deviation, no distortion, and the appearance of the concrete is regular and beautiful.

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?: The arch support is an adjustable template or a small template

Q: Would you please tell me the difference between the concrete and shotcrete in the tunnel?: Characteristics of shotcrete:(1) the sprayed concrete has the characteristics of rapid growth, strong bonding force, high density and good impermeability. It can better fill the gap between the rock blocks, increase the integrity of the surrounding rock, prevent the free surface weathering and loosening, and work together with the surrounding rock.(2) the construction of shotcrete will transfer, pouring and tamping a few processes into one, and do not need a template, so the construction of fast, simple.(3) sprayed concrete can play an important role as early as possible.(4) compared with the concrete, the physical and mechanical properties of sprayed concrete are improved.

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: Who can give me detailed tunnel construction process: 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: The arch and the arch of the tunnel: Tunnel arch wall refers to both sides of the tunnel wall and the top of the arch, the tunnel arch wall is generally the use of a template trolley.

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;