Soft soil foundation excavation reinforcement device in rock tunnel of improved tunnel boring machine

Abstract

Disclosed is a soft ground excavation reinforcement apparatus for an improved TBM rock tunnel, the apparatus comprising: an excavation body (100) comprising a rotating cutter head (110) for drilling and excavating rock by means of rotation, and a forward movement part (120) for moving the rotating cutter head (110) forward; a gripper body (200) provided on an outer surface of the forward movement part (120) of the excavation body (100), and closely attaching to an excavated rock surface so as to support the excavation body (100) when the excavation body (100) moves forward; a reinforcement body (300) interposed between the rotating cutter head (110) of the excavation body (100) and the gripper body (200) so as to reinforce a fault fracture zone when drilling and excavating rock; and a segment (400) constructed on the fault fracture zone by means of the reinforcement body (300). The reinforcement body (300) comprises: a reinforcement body housing part (310) surrounding an outer surface of the forward movement part (120) of the excavation body (100), and comprising a bearing part (311); a reinforcement body rotation part (320) positioned on the circumferential portion of the reinforcement body housing part (310) by being connected with the reinforcement body housing part (310) by means of a support frame part (321), and having an interlocking gear (322) formed along the inner circumferential surface thereof; a reinforcement body rotation motor (330) comprising a drive gear (331) engaged with the interlocking gear (322) of the reinforcement body rotation part (320); a first cylinder part (340 (351)) and a second cylinder part (350) connected with the reinforcement body rotation part (320) by means of reinforcement body brackets (341, 351); a first link part (360) having one side thereof connected with the first cylinder part (340 (351)), and a second link part (370) having one side thereof connected with the second cylinder part (350); and a segment erector (380) having the other side of the first link part (360) and the other side of the second cylinder part (350) connected thereto, and comprising a connecting protrusion part (381) connected with the segment (400).

Description

technical field [0001] The present invention relates to the soft soil foundation excavation reinforcement device in the rock tunnel of improved tunnel boring machine, more specifically, relates to the soft soil foundation excavation reinforcement device in the rock tunnel of improved tunnel boring machine, that is, when using In the process of excavating rocks with the Tunnel Boring Machine (Tunnel Boring Machine), when the soft soil foundation is reached, the steel pipe sheet is used to give priority to the reinforcement of the soft soil foundation. Background technique [0002] Generally, construction methods used to excavate tunnels include American Steel Support Method (ASSM, American Steel Support Method) as a conventional construction method, New Austrian Tunneling Method (NATM, New Austrian Tunneling Method) as a new construction method, Tunnel Boring Machine (Tunnel Boring Machine method) or Shield Tunnel. [0003] Among them, the U.S. steel support method, which is...

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Problems solved by technology

[0016] However, in the case of the prior art, since the excavating device having a collapse protector around the cutter head is used as a shield method, it is difficult to apply the excavating device without a clamper to Under the condition that the main body is supported by the holder, the tunnel boring machine method is advanced by the hydraulic cylinder and no collapse protection body is installed on the cutter head. For the shield tunnel boring machine method, it is different from the excavation of the segment (steel, PC segment) There is a difference in the method of driving by obtaining the thrust from the hydraulic cylinder at the section section of the segment in the direction of tunneling, and even if it is applicable, it still cannot solve the problem of slipping between the gripper and the segment

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