Courter force device for shield jacking and new austrian tunneling method supporting, and setting method of courter force device

Abstract

The invention belongs to the technical field of tunnels and underground engineering, in particular to a courter force device for shield jacking and new austrian tunneling method supporting, and a setting method of the courter force device. The courter force device effectively solves the difficult problem that traditional shield construction must adopt a segment lining to provide courter force andcannot adopt shorcrete bolt lining in a new austrian tunneling method for supporting. The courter force comprises a shield machine body; a plurality of jacking-pushing oil cylinders are evenly distributed on the shield tail of the shield machine body in the shield direction, and the arranging form of the multiple evenly-distributed jacking-pushing oil cylinders is matched with a structural form ofa shield section; circumferential arch frames arranged in the shield section are arranged on the excavated shield section of the shield machine body, and longitudinal courter-force beams arranged inthe shield section are arranged between the circumferential arch frames. According to the courter force device and the setting method thereof, the advantages of safe and quick tunneling of a shield tunneling method and economy and reasonability of new austrian tunneling method lining are combined, and the quick, safe and economic construction targets of a tunnel are achieved.

Description

technical field [0001] The invention belongs to the technical field of tunnels and underground engineering; in particular, it relates to a counter force device and a setting method for shield jacking new Austrian method support. Background technique [0002] At present, in the soft rock with no groundwater or little groundwater, such as IV and V surrounding rocks or soil and rock formations, the tunnel construction is generally carried out by the new Austrian method or the shield method; the shield method is tunnel and tunnel construction. A fully mechanized construction method for underground engineering, which is to push the shield machine in the stratum, support the surrounding rock through the shield shell and segments to prevent the collapse into the tunnel, and at the same time use the cutting device in front of the excavation face. The excavation of the soil is carried out of the hole by excavation machinery, and the jack is used to pressurize the lining assembled int...

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Problems solved by technology

[0005] The main purpose is to propose a counter force device for the combination of shield tunneling and NATM support, effectively solving the problem that traditional shield construction must use segment lining to provide counter force, and NATM spraying cannot be used. The problem of anchor lining for support; combining the safe and rapid excavation of the shield method with the economic and reasonable advantages of the new Austrian method of lining, without changing the existing tunnel structure design, it can ensure the mechanized rapid excavation of soft rock tunnels, and the initial support It is suitable for various types of lining sections, such as circular and horseshoe-shaped tunnel sections, etc., to achieve the goal of fast, safe and economical tunnel construction

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