Method for laying structures of forming underground tunnel and its structure

Abstract

The invention relates to a structure laying method and structure for forming an underground tunnel. Different from the past, the present invention does not press into long-distance small-diameter pipelines that cannot be erected between steel pipes and is uneconomical, and lays wooden anti-slump plates through the input port of the anti-slip plate on the transmission pipe, so that the construction is simple and the cost of materials is low. , At the same time, due to the laying through the transmission pipe, boulders and other obstacles can be quickly removed, making the laying easier and has good straightness.

Description

【Technical field】 [0001] The present invention relates to a structure laying method and structure for forming an underground tunnel. It is possible to improve the method of laying the structure that forms the tunnel in the middle, make it able to fully withstand the stress in advance, and then excavate the inside of the structure to form an underground tunnel, so that the construction of a strong and waterproof tunnel structure can be completed in a short period of time. 【Background technique】 [0002] Generally, in order to form a tunnel, it is necessary to lay a tunnel structure capable of withstanding stress generated from the outside of the tunnel, and the conventional method of laying a tunnel structure will be described below. [0003] First, if figure 1 As shown, large-diameter steel pipes 10 of the same shape as the tunnel are pressed into the ground at a certain interval, the inside of the steel pipe 10 and the outside of the steel pipe 10 are poured, and then the ...

AI Technical Summary

Problems solved by technology

[0004] First, because the tunnel excavation is carried out first, and then the erection process is carried out, the erection process needs to be carried out many times, which is very cumbersome and has certain safety hazards

[0005] Second, in order to carry out the erection process, a plurality of scaffolds 1 will be connected with a plurality of screws to be laid after tunnel excavation, which not only increases the difficulty of work, but also requires a lot of manpower, long construction period and uneconomical. construction progress is slow

[0006] Third, when excavating, if the excavation is too deep, when the foundation is weak, needless to say, the excavation process has a high risk of foundation or rock plate collapse or subsidence during the erection process after the excavation work. security incident

[0010] First, all the very long small-diameter pipelines 2 must be forcibly pressed into the steel pipes 10 for laying. When the length is relatively long, since there is no pipeline transmission pipe and adjustment device, it is difficult to control the directionality, and there are defects in the linear progress. , so it is difficult to lay

When the gaps between the steel pipes 10 are large, the small-diameter pipes 2 cannot prevent landslides, and a lot of equipment and construction costs will be consumed

When there are stones or the soil layer moves up, the direction changes, which makes the linear progress uncertain. When there are huge stones, the construction will be very difficult. When the filling work is carried out inside the steel pipe at the same time, the steel pipe will be corroded and become deformed. Fragile, difficult to prevent groundwater and soil loss, very uneconomical when filling the interior of pipes

[0011] Second, when the curved surface parts of the side of the above-mentioned steel pipe 10 opposite to a certain distance are cut to form mutually open cut parts, there is a danger of collapse due to the pressure of the upper soil layer.

After the upper and lower ends of the incision are welded with iron plates 3, it is necessary to lay struts 4. At this time, the pressure of the soil layer will be transmitted to the lower iron plates, so it is necessary to lay protective steel plates separately, which makes the work complicated and requires other Iron plate equipment consumes too much equipment cost and is uneconomical

Moreover, the ability to withstand external stress is weak. If there are no necessary measures in advance, it will be structurally unsafe.

[0012] The 3rd, fill above-mentioned steel pipe interior 10 bottoms with polystyrene foam plastics 5 as the work of casting mould, need expend a lot of equipment cost, when construction material is in short supply, be difficult to buy polystyrene foam plastics 5, need to process or special for steel pipe 10 Customized Styrofoam 5, if the size of steel pipe 10 changes, you need to re-purchase Styrofoam 5 that meets the size, which is very inconvenient

In addition, after the completion of the project, the waste of polystyrene foam 5 will pollute the environment, and it is also very difficult to deal with it.

[0013] Fourth, since the inside of the steel pipe is filled with concrete without reinforcement, the ability to withstand external stress is weak, it is difficult to explain the structure, and it is necessary to add a protective steel plate, which requires a lot of extra costs, which is not only uneconomical, but also reduces the safety index

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