Rock breaking device adopting aid of TBM high-voltage pulse water jet

Abstract

The invention provides a rock breaking device adopting the aid of TBM high-voltage pulse water jet. The device comprises a water tank, a TBM water supply pipeline, a filter, a water supply pump, a hydraulic pressurizer, a rotator, a flow divider, a pulse water flow generation device, a tool disc, a controller, a conductive slide ring and a computer, wherein the hydraulic pressurizer, the water supply pump, the filter, the water tank and the controller are fixedly installed in a TBM main beam through bolts; the flow divider and the pulse water flow generation device are installed on the tool disc; and the components are connected through a high-pressure water conveying pipeline, a low-pressure water conveying pipeline, an electric wire or a signal wire. The rock breaking device adopting theaid of the TBM high-voltage pulse water jet has the following beneficial effects: a high-voltage pulse water jet beam is generated through the device to effectively crack rock, so that a tool is aided to efficiently and safely break the rock.

Description

technical field [0001] The invention relates to the field of rock-breaking devices, in particular to a TBM high-pressure pulsed water jet assisted rock-breaking device. Background technique [0002] The traditional TBM mainly uses the hob on the cutterhead to break rock mechanically. During the contact movement between the hob and the rock surface, the normal force, rolling force and lateral force will be applied to the rock surface, resulting in crushing, shearing, abrasion and other mechanical effects, causing stress concentration and micro-cracks in the rock, and the extension of micro-cracks Expansion creates macroscopic damage, which breaks up the rock. When excavating hard rock mass with high confining pressure, TBM has insufficient rock-breaking ability and low efficiency, and is prone to problems such as low penetration of cutters and severe wear. It leads to frequent replacement and maintenance of tools, which consumes a lot of time, seriously affects the construc...

AI Technical Summary

Problems solved by technology

At present, the existing patent "High Pressure Water Jet Full-Section Rock Tunneling Machine Cutter Design Method" proposes the concept of setting nozzles on the TBM cutter head to generate water jets to assist the cutter in breaking rocks. Rock Breaking System and Method” discloses the layout method of the water jet generation system on the TBM, but both of them only propose the use of water jet, without specifying what form of water jet to use; the latter uses a motor-driven booster pump as power device, the jet pressure is generally not high, and the volume is large

Images