Water jet cutter for cutter head of shield tunneling machine

Abstract

The invention belongs to the technical field of shield tunneling machines, and discloses a water jet cutter for a cutter head of a shield tunneling machine. The water jet cutter comprises a cutter head and a water supply assembly, wherein the water supply assembly is used for conveying water; a hobbing cutter is arranged at one side of the cutter head; a blocking cover is arranged on the circumferential surface of the cutter head in a sleeving way; an installing groove is formed in one side, near the hobbing cutter, of the cutter head; a water outlet pipe is arranged inside the installing groove; a water spraying head is arranged on the circumferential surface of the water outlet pipe; the water supply assembly comprises a main pipe; the main pipe is arranged inside the cutter head; and a water inlet pipe is arranged at one side of the main pipe. The front side of the cutter head is shielded through the blocking cover, so that the water sprayed out from the water spraying head cannot directly flow into soil under the shield tunneling machine; the water can drive the broken soil body to enter a soil water cabin; the too high water content of the soil in front of the shield tunneling machine cannot be easily caused; the soil bearing force cannot be reduced; the soil layer collapse cannot be easily caused; and the safety guarantee during the construction is improved.

Description

technical field [0001] The invention belongs to the technical field of shield machines, and in particular relates to a water jet for the cutter head of a shield machine. Background technique [0002] The shield machine is a tunnel boring machine that uses the shield method. The construction method of the shield tunnel is that the tunnel boring machine builds (lays) the "shield" (referring to the supporting segment) of the tunnel while digging, which is different from the open construction. Internationally, the generalized shield machine can also be used in rock formations, but it is different from the open (non-shield method) tunnel boring machine. In my country, tunnel boring machines used in soft ground are customarily called (narrowly defined) shield machines. Shield machines are generally divided into hand-extruded shields, extrusion shields, and semi-mechanical shields according to their working principles. TBM (local air pressure, global air pressure), mechanical shiel...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a shield machine cutter head with a water jet to solve the problems in the above-mentioned background technology that it is easy to cause the soil layer to collapse and reduce the tunneling efficiency of the shield machine

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