Full-fracture-surface hard-rock tunneling machine cutter disc and tunneling method

Abstract

The invention belongs to the technical field of engineering machinery, and specifically discloses a full-section hard rock tunnel boring machine cutter head and an excavation method, including a main cutter head mechanism, an expansion cutter head mechanism and a connecting body; The mounting hole of the connecting body of the driving mechanism; the main cutter head mechanism includes the main cutter head, the first slag removal knife, the first hob unit and the first water knife unit; the expansion cutter head mechanism includes several auxiliary cutter head mechanisms; the auxiliary cutter head mechanism It includes an auxiliary cutter head, an auxiliary cutter head installation frame, and a telescopic mechanism; a second hob group, a second water jet group and a second slag removal knife are arranged on the cutting end of the auxiliary cutter head. The water jet group of the cutter head of the present invention can cut the tunnel rock with water flow, and the tunnel rock becomes looser after the water flow cutting, and then the hob unit rolls and crushes the looser tunnel rock, which effectively reduces the excavation stress and protects the hob; The telescopic mechanism connected to the cutter head can change the cutting diameter of the cutter head, which is suitable for the needs of tunnels with various diameters.

Description

technical field [0001] The invention belongs to the technical field of construction machinery, and in particular relates to a full-section hard rock tunnel boring machine cutterhead and a tunneling method. Background technique [0002] The full-face tunnel boring machine is the tunnel boring equipment that is often used in the world. It is widely used all over the world because of its small impact on the surface and fast construction speed. However, the cutting method of the cutter head of the existing full-face hard rock tunnel boring machine is Only use hob pure friction cutting, the excavation stress is large, so the force on the cutter head is large, so the cutter head and cutter wear are relatively large, resulting in slow excavation speed and many construction failures. [0003] The cutting diameter of the existing cutter head is not easy to adjust, and cannot be adapted to the requirements of tunnels with various diameters. Contents of the invention [0004] Aiming...

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Problems solved by technology

[0002] The full-face tunnel boring machine is the tunnel boring equipment that is often used in the world. It is widely used all over the world because of its small impact on the surface and fast construction speed. However, the cutting method of the cutter head of the existing full-face hard rock tunnel boring machine is Only the hob is used for pure friction

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