A reaction shield structure with strong stabilizing effect for tunnel excavation engineering

Abstract

The invention relates to a reaction shield structure with a high stabilizing effect for tunneling works. The reaction shield structure comprises a shield protective frame and an expanding plate; a buffer layer is arranged on the inner wall in the shield protective frame, a rotating shaft is connected to the upper end of the outer wall of the top of the buffer layer, a first protective plate is arranged on the outer wall of the rotating shaft, and fixing clamps are connected to the top of the outer wall of the first protective plate. The reaction shield structure has the advantages that a movable block can move left and right under interaction of a slide way and a second hydraulic cylinder, and friction resistance can be reduced during moving through the arrangement of the slide way, so that both time and labor are saved; besides, the expanding plate can be moved from the inside of a support under action of the second hydraulic cylinder to support walls of tunnels when the reaction shield structure is used for supporting the tunnels in different width, collapse of the tunnels during heading is avoided, and the reaction shield structure can create time for heading workers to escape in accident collapse of the tunnels.

Description

technical field [0001] The invention relates to the technical field of reaction shield devices, in particular to a reaction shield structure with strong stabilizing effects for tunnel excavation engineering. Background technique [0002] Tunnels refer to passages dug out of existing buildings or earth-rock structures for three-dimensional traffic, crossing mountains and ridges, underground passages, crossing rivers, crossing seas, pipeline transportation, underground cables, water conservancy projects, etc. Tunnels are not necessarily all Underground passages, which are only located under the ground, are called underground tunnels. In Taiwan, China, they are sometimes called underground passages. Tunnels are engineering buildings buried in the ground. They are a form of human use of underground space. There will be work when digging tunnels When personnel entered, a counter force shield structure for protecting staff attracted people's attention. [0003] A new type of shie...

AI Technical Summary

Problems solved by technology

[0003] A new type of shield reaction force frame is disclosed in the Chinese Invention Patent Application Publication No. CN 201721609452. The utility model belongs to the technical field of subway construction, and in particular relates to a new type of shield reaction force frame, which includes a rectangular frame body arranged perpendicular to the ground. The frame body includes an upper support beam, a lower support beam and two upright columns. Each upright column is connected with a slanted top column and a slanted top column 2 on the side away from the shield door opening. Vibration sensor, slanted top column 1 and slanted top column_bottom are respectively connected with a lower support plate, the lower support plate is fixed on the ground, and the top of the upper support beam is provided with an upper column 1 and an upper top at intervals on the side away from the shield tunnel. The second column, the upper top column one and the upper top column two are jointly fixed with an upper support plate. The present invention has a simple structure, which is beneficial to improve the support strength, facilitate monitoring of the support state, ensure safety and reliability, and facilitate market promotion and application. However, there are also some The disadvantage is that the tunnel cannot be supported more stably during use, resulting in that it cannot provide people with a better time to escape from danger when the tunnel collapses unexpectedly, and it is not convenient enough to move, and secondly, it is not enough when used. Therefore, we propose a reaction shield structure with strong stabilizing effect for tunnel excavation engineering

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