Propulsion method for shield machine to pass through shallow-buried underground excavation tunnel

Abstract

The invention discloses a propulsion method for shield machine to pass through shallow-buried underground excavation tunnel. The propulsion method includes the steps that 1, a concrete guide platformis poured; 2, a shield body walking guide rail is laid; 3, a connecting bridge is supported; 4, the shield machine is dissembled; 5, the shield body is pushed; 6, a battery car guide rail and a platform car guide rail are laid; 7, a reaction force frame is installed; 8, a trolley structure is pushed; and 9, the shield body and the trolley structure are connected. According to the propulsion method, the method that the shield body of the shield machine and the trolley structure are separated and then pushed separately is used, so that the shield body of the shield machine can safely and rapidlypass through an underground excavation tunnel in non bulldozing mode, meanwhile, the concrete guide platform is used as the supporting foundation of the shield body, so that propulsion of the shieldbody and the trolley structure in the later stage is convenient, and the construction period is shortened. The shield body is pushed by using a on-rail heavy object pushing machine, selected mechanical equipment is less, and the propulsion work of the shield body is simplified, so that the shield body can pass through the underground excavation tunnel quickly when the driving force of the shield body is lost in the underground excavation tunnel, so that the shield body is safe and undamaged in the process of propulsion

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, and in particular relates to a method for advancing a shield machine through shallow buried tunnels. Background technique [0002] When the shield machine is moving, the segment needs to be used as the supporting power. When the shield machine goes out of the hole and enters the underground excavation section, it cannot be disassembled and hoisted in the confined space. Losing the segment support cannot provide the shield machine with forward movement power. Under such circumstances, the shield machine will not be able to move forward independently. In order to ensure that the shield machine enters the end of the next section smoothly, safely and quickly, it is necessary to push the shield machine through the underground excavation section to ensure the construction of the next section. . During the construction of Xi'an Metro Line 4, the total length of the shield section from Daming...

AI Technical Summary

Problems solved by technology

After excavating 104m, the shield machine enters a 150m-long underground excavation tunnel. The width of the underground excavation section is 7.5m, the height is 7.65m, and the buried depth of the tunnel is about 18m. Due to the existence of underground excavation tunnels in the entire section, the shield machine cannot be powered by segments Complete the travel in the entire section, and because the shield machine cannot be disassembled and hoisted in the confined space, a method of advancing the shield machine through the shallow buried tunnel is needed to solve the problem of shield tunneling in the tunnel. The problem of institutional progress

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