Guiding self-drilling type pipe shed steel pipe device for tunnel excavation and construction method

Abstract

The invention relates to the technical field of pipe shed supporting, and provides a guiding self-drilling type pipe shed steel pipe device for tunnel excavation and a construction method. The guiding self-drilling type pipe shed steel pipe device comprises a main drill bit and a pipe shed steel pipe; a plurality of reinforcing rings are arranged on the periphery of the pipe shed steel pipe in the vertical axis direction, and wedge-shaped ribs are arranged between the adjacent reinforcing rings in the axis direction of the pipe shed steel pipe; a grouting cavity is formed in the pipe roof steel pipe, and a plurality of grout outlets are formed in the surface of the pipe roof steel pipe; the main drill bit is connected with a drill rod and connected with one end of the pipe shed steel pipe through a connecting piece. A guiding self-drilling type pipe shed comprises a guiding wall, a positioning point and the guiding self-drilling type pipe shed steel pipe device. According to the pipe shed steel pipe, the reinforcing rings and the wedge-shaped ribs can be effectively bonded with a peripheral soil layer, the steel pipe can be reinforced, the integrity and stability of a pipe shed structure and the peripheral soil layer are greatly improved, and potential safety hazards of construction are reduced; meanwhile, the drill bit is connected with the pipe shed steel pipe, related procedures of hole expanding and hole cleaning are reduced, the construction efficiency is improved, and the construction period is shortened.

Description

Technical field [0001] The present invention relates to the field of tube studios, and in particular, to a guided self-drilling tube steel pipe device, a shed and construction method for tunnel excavation. Background technique [0002] During the construction of the tunnel engineering, the tunnel surrounding rock often needs to be supported, and the general step is to be drilled and then clear, and then press the steel pipe into the hole. For soft rock tunnels, the phenomenon of collapse is easily occurring during the clearing process, which will reduce the efficiency of construction and improve the cost of the project. Further, the steel pipe currently used is cylindrical, and when the steel pipe is pressed into the hole, the binding of the steel pipe and the soil layer is poor, and the sliding phenomenon is easily blocked. How to make a fast quality and quantity completion of the construction of the pipeline need to design a new shed construction appliance. Inventive content ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome at least one of the deficiencies of the prior art. Aiming at the poor bonding firmness between the steel pipe of the pipe shed and the soil layer and the collapse of the hole during the hole cleaning process, the present invention provides a Guided self-drilling pipe shed steel pipe device for tunnel excavation, pipe shed and construction method

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