High-pressure water jet double-slit coupling rock breaking tunnel boring machine

Abstract

The invention discloses a high-pressure water jet double-slit coupling rock breaking tunnel boring machine, which comprises a cutterhead, injection devices and a high-pressure liquid generation device, wherein the first side surface of the cutterhead is provided with hobbing cutters; the movement trajectories of the injection devices are concentric and adjacent with the movement trajectories of the hobbing cutters; and the high-pressure liquid generation device communicates with the injection devices. The high-pressure liquid generation device and the injection devices are added, the movementtrajectories of the injection devices are concentric and adjacent with the movement trajectories of the hobbing cutters, and the high-pressure liquid generation device provides high-pressure liquids for the injection devices. During working, the high-pressure liquid generation device is started, the high-pressure liquids firstly carry out segmentation and sputtering on tunnel face rock through theinjection devices, so that the tunnel face rock firstly generates a microfissure, or an existing microfissure further expands. Subsequently, the hobbing cutters positioned on adjacent trajectories perform a further extrusion and shearing function on the tunnel face rock to realize the efficient and quick construction of the tunnel boring machine, the abrasion of the hobbing cutters can be loweredthrough the injection of the high-pressure liquids, and the service life of a TBM (Tunnel Boring Machine) main shaft is prolonged.

Description

technical field [0001] The invention relates to the technical field of tunnel boring machines, in particular to a high-pressure water jet double-slit coupled rock-breaking tunneling machine. Background technique [0002] At present, in the construction of long diversion tunnel projects, railway and highway traffic tunnel projects, TBM (Tunnel Boring Machine, road boring machine) construction is mostly used. In the traditional TBM construction process, due to the limitation of the capacity of the TBM equipment itself, when the uniaxial compressive strength of the surrounding rock of the tunnel face exceeds 150MPa, the penetration of the TBM hob is extremely low, and the wear rate of the hob is greatly accelerated, resulting in TBM excavation. The footage is low, the tunneling speed is slow, and the service life of the TBM spindle is reduced. [0003] Therefore, how to provide a high-pressure water jet double-slit coupled rock-breaking tunneling machine to reduce the wear of ...

AI Technical Summary

Problems solved by technology

In the traditional TBM construction process, due to the limitation of the capacity of the TBM equipment itself, when the uniaxial compressive strength of the surrounding rock of the tunnel face exceeds 150MPa, the penetration of the TBM hob is extremely low, and the wear rate of the hob is greatly accelerated, resulting in TBM excavation. The footage is low, the tunneling speed is slow, and the service life of the TBM spindle is reduced

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