A dual-mode slagging roadheader and its composite slagging system

Abstract

The invention discloses a composite slag discharge system, which includes a cutter head arranged at the front end of the machine body, an excavation bin set in the body and used for temporarily storing the dregs discharged from the cutter head, set in the body and selectively The air cushion warehouse communicated with the excavation chamber, and the hard rock transportation mechanism arranged in the body and communicated with the excavation chamber for transporting the temporarily stored hard rock dregs to the outside, and the hard rock transportation mechanism arranged in the The mud water pumping mechanism inside the body and communicated with the air cushion bin is used to pump the inflow mud water and dregs to the outside. In this way, the hard rock slag in the excavation chamber can be transported and discharged by the hard rock transportation mechanism, and the muddy water slag in the air cushion chamber can be pumped and discharged by the mud water pumping mechanism, so the tunnel boring machine can be improved to the tunnel strata. The adaptability to geological changes meets the construction needs of long-distance tunnel excavation operations in strata where hard rock and soft soil coexist. The invention also discloses a double-mode slag-discharging tunneling machine, the beneficial effects of which are as above.

Description

technical field [0001] The invention relates to the technical field of tunnel excavation, in particular to a composite slag discharge system. The invention also relates to a dual-mode slag-discharging tunneling machine. Background technique [0002] With the rapid development of the national economy, my country's urbanization process continues to accelerate. For a long period of time in the future, domestic urban subway tunnels, hydraulic tunnels, cross-river tunnels, railway tunnels, highway tunnels, municipal pipelines and other tunnel projects will require a large number of tunnel boring machine. [0003] Tunnel boring machine is a highly intelligent tunnel construction equipment that integrates mechanical, electrical, hydraulic, optical and computer technologies. Tunnel boring machines are generally divided into two categories in China, namely, open tunnel boring machine (Tunnel Boring Machine, referred to as TBM) and shield tunnel boring machine (abbreviated as shield ...

AI Technical Summary

Problems solved by technology

For the hard rock slag excavated by TBM, the belt conveyor is usually used to transport the slag, which has a high construction efficiency for hard rock and can cope with long-distance hard rock conditions, but it is difficult to excavate in water-rich, sandy and mud-containing geology

The host part of the shield machine is isolated from the formation, which can well block the water and soil pressure. Usually, the mud-water balance method is used to pump the slag, which can better adapt to the water-rich, high water pressure and other formations, but the construction efficiency is low. Continuous Higher cost when excavating long distances

[0005] In the existing technology, the slag discharge method of the tunnel boring machine is either the belt conveyor slag discharge of the TBM, or the mud-water balance slag discharge of the shield machine, which has great limitations on the adaptability to changes in stratum geology

At present, my country's large-scale tunnel projects such as railway tunnels, highway tunnels, water diversion tunnels, and subsea tunnels are developing rapidly. Actual engineering needs

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