Equipment and method for installing tunnel-through-pipe in long-distance embankment penetrating casing

Abstract

The invention relates to equipment and a method for installing a tunnel-through-pipe in a long-distance embankment penetrating casing, and belongs to the field of tunnel-through-pipe installation. The equipment comprises a traction support (2), a dragging device (5), a steel wire rope (6), a track (12) and a carrying trolley (9), wherein the traction support (2) is installed at the front end of a working shaft concrete casing (1); one end of the dragging device (5) is connected with the traction support (2), and the other end of the dragging device (5) is connected with a steel pipe (12) through the steel wire rope (6); the steel pipe is placed on the carrying trolley (9), and wheels of the carrying trolley (9) are located in the track (12); and the track (12) is laid in the concrete casing (1). According to the principle that the friction resistance of dragging the steel pipe is reduced through rail rolling friction and the dragging capacity is improved through a movable pulley block, the welded steel pipe is dragged into the casing through the dragging device and a traction device, abrasion of an anticorrosive coating outside a tunnel-through steel pipe can be avoided, and the installation process is simple and orderly.

Description

technical field [0001] The invention relates to the technical field of installing steel pipes in tunnels, in particular to a device and method for installing tunnel-piercing pipes in embankment-piercing sleeves in long-distance and narrow spaces. Background technique [0002] The water conveyance tunnel is an important part of the water diversion and diversion project. The tunnel-piercing construction technology is a commonly used method in the construction of the water conveyance tunnel: during construction, the outer lining concrete is first made into a casing, and then the inner lining is pierced The steel pipes are pushed into the concrete pipes that line the outside. At present, the hole-pipe construction technology has been widely used in the construction of gas, heat, electricity, water supply, drainage and other short-distance, small-diameter underground pipelines that do not require high installation accuracy. There are many difficulties in the diameter steel pipe:...

AI Technical Summary

Problems solved by technology

[0004] During the construction using the above scheme, the following problems were encountered: the outer anti-corrosion layer of the steel pipe was easily damaged because the pierced steel pipe was pressed on the sleeve and rolled into the concrete casing; and a layer of concrete had to be poured at the bottom of the tunnel during the construction process Used to reinforce the rolling device, the process of pouring concrete is time-consuming and prolongs the construction time

On the other hand, when propulsion equipment is used to propel the steel pipe, it is necessary to place a protective iron at the mouth of the steel pipe. The propulsion equipment pushes the steel pipe to move into the tunnel body through the protective iron. The propulsion equipment stops working, the protective iron is removed, and then the next steel pipe is hoisted to the pipeline placement platform, the front and rear steel pipes are butted, and the welding work is carried out. After the welding is completed, the protective iron is installed and then the advancing work is repeated. Removing and installing the guard iron until the steel pipes are all in place, the process is very complicated

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