Same-plane multi-cutter-disc rectangular tunneling machine used in water-rich pebble stratum

Abstract

The invention relates to the technical field of tunnel construction equipment, in particular to a same-plane multi-cutter-disc rectangular tunneling machine used in a water-rich pebble stratum. The same-plane multi-cutter-disc rectangular tunneling machine comprises a shield body, a cutter disc mechanism, a cutter disc driving mechanism and a residue soil delivery mechanism, wherein the cutter disc mechanism comprises 10 cutter discs symmetrically arranged on the same plane and comprises large cutter discs, middle cutter discs, small cutter discs and miniature cutter discs, the 10 cutter discs perform cooperative rotation on the same plane and do not interfere mutually. An advanced grouting pipe is obliquely arranged at the upper portion of the shield body. The excavation cutter discs of the same-plane multi-cutter-disc rectangular tunneling machine used in the water-rich pebble stratum are located on the same plane, unique structures of the cutter discs make the adaptability of the tunneling machine to the water-rich pebble stratum improved greatly, meanwhile an excavating face is effectively supported, soil body collapse is avoided, soil body sedimentation can be effectively controlled, and accordingly the life safety of workers is ensured.

Description

technical field [0001] The invention relates to the technical field of tunnel construction equipment, in particular to a rectangular tunnel boring machine with multiple cutterheads on the same plane used in water-rich cobblestone formations. Background technique [0002] With the development of the economy, the urbanization process is gradually accelerating, and the road space is getting smaller and smaller. The construction of underground tunnels has become a new direction in the current construction field. The rectangular tunnel boring machine has the advantages of high space utilization rate, shallow covering soil and relatively low construction cost, and its effective use area is more than 20% larger than that of the circular pipe jacking. At present, domestic rectangular tunnel boring machines are still limited to conventional rectangular tunnel boring machines that are only suitable for soft soils such as silt, sticky, silt, sand, etc., but the application of rectangul...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the current existing rectangular roadheader for cobblestone formations that have large disturbance to the soil, limited mixing area, poor fluidity of the muck, and easy to cause soil collapse, so as to realize a kind of cutter head that is in the same plane. At the same time, the tunnel face can be effectively supported to avoid soil collapse, and the same-plane multi-cutter rectangular tunnel boring machine with good adaptability to cobblestone stratum is used for water-rich cobblestone stratum

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