Water jet tunneling type shield tunneling machine

Abstract

The invention provides a water jet tunneling type shield tunneling machine. A water jet technology and a shield tunneling technology are combined and an annular retaining device is moved frontwards; in a tunneling process, a cavity formed in the outer side of a rock cylinder is pushed forwards in a tunneling process; a disc-shaped hobbing cutter of an existing shield tunneling machine is changed into an annular hobbing cutter and is arranged at the front end of the annular retaining device, so that abrasion is reduced; a retractable pressure sensor probe is arranged at the front end of the annular retaining device so that a water jet can be conveniently opened in time; an alloy cutter is partially or wholly replaced by the water jet; when the machine meets a stratum layer or a hard rock layer with complicated lithological characters, the water jet is used for assisting tunneling, so that direct collision between the cutter and rocks is reduced; and in order to reduce water utilization cost and sand utilization cost of the water jet, a residue soil conveying device and a water pumping device of the shield tunneling machine are improved, and pumped underground water and crushed waste residues, which are pumped in a tunnel construction process, are recycled and are used for a sand adding water jet. The embodiment suitable for mines is designed. The tunnel construction cost can be easily reduced, harms of collapse, waste heat, water inrush accidents and dust are effectively reduced, and wastes of underground water are reduced.

Description

technical field [0001] The present invention relates to high-pressure water jet cutting (hereinafter referred to as water jet) technology and shield technology. Specifically, it is a combination of water jet and shield machine invented and created by using water jet to partially replace traditional alloy knives to cut tunnels, mines, etc. Hard rock or uneven ground that may be encountered during the construction process to reduce wear and reduce costs, and comprehensively utilize the shield machine that excavates the groundwater extracted from the excavation construction stratum and the waste residue generated during the excavation process. Background technique [0002] When constructing with existing shield cutting tools, various complex formations will be encountered. Uniform hard rock formations only need a hob, but when the formation is uneven, a cutter must be installed. The cutter has almost no effect in the process of breaking hard rock. Due to the penetration angle a...

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Problems solved by technology

In addition, the larger the size of the ore mined by gemstone mining, the higher the value. It is necessary to keep the integrity of the ore as much as possible, and the use of explosives must be avoided as much as possible. However, the current mining method uses more explosives, and the use of shield technology to mine without explosives is still unavailable. precedent

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