Compound supporting device for tunnel micro-step construction

A composite support and micro-step technology, applied in tunnels, shaft equipment, installation of bolts, etc., can solve problems such as excessive tension and accidents, and achieve the effect of good fixation and connection

Pending Publication Date: 2020-09-01
浙江省水利水电勘测设计院有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The bolt device in the technical solution has the following disadvantages: the bolt is obliquely inserted into the upper rock layer, and a multi-layer steel mesh is welded at the bottom of the bolt, causing the upper rock layer to withstand excessive tension, which is likely to cause accidents occur

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  • Compound supporting device for tunnel micro-step construction
  • Compound supporting device for tunnel micro-step construction
  • Compound supporting device for tunnel micro-step construction

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Embodiment Construction

[0024] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1 to Figure 4 As shown, a composite support device for tunnel micro-step construction, it includes several pipe shed pipes 2, several fixed frames 1 and several steel arch frames 4, the pipe shed pipes 2 are evenly arranged in a semi-circular shape and inserted into the In the rock of the mountain; the fixed frame 1 is a semi-annular body, which is set at a certain distance along the length direction of the pipe shed pipe 2 and is socketed on the pipe shed pipe 2; the steel arch frame 4 is connected in sections to form a semi-annular body, and The length direction of the shed pipe 2 is arranged at regular intervals, and is docked with the fixed frame 1 at the corresponding position. On the same transverse plane perpendicular to the pipe shed pipe 2, the steel arch frame 4 and the fixed frame 1 are ...

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PUM

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Abstract

Disclosed in the present invention is a compound supporting device for a tunnel micro-step construction, comprising multiple pipe shed pipes, multiple fixed frames, and multiple steel arches. The pipeshed pipes are uniformly arranged in a semicircle and inserted in mountain rocks; the fixed frames are semicircles, arranged in the length directions of the pipe shed pipes every other a certain distance and sleeved on the pipe shed pipes; the steel arches are segmented and connected as a semicircle, are arranged in the length directions of the pipe shed pipes every other a certain distance, andare in butt joint with the fixed frames in the corresponding positions; and on the same horizontal plane perpendicular to the pipe shed pipes, the steel arches and the fixed frames are fixedly connected to form a complete closed ring. The device of the present invention provides a support force to the rocks thereabove, so that the rocks are not suffered from a tension, and are fixed; and when a step method is used for construction, the rocks above an upper step are supported, higher safety is achieved during construction of a lower step, so that the effect of safety construction is achieved.

Description

technical field [0001] The invention relates to the technical field of construction composite support, in particular to a tunnel micro-step construction composite support device. Background technique [0002] In pit exploration engineering, composite support is any one or more of the single support methods such as shotcrete support and bolt support, grouting, steel mesh, steel arch, pipe shed, etc. , in order to improve the support method of excavation construction safety. [0003] Chinese patent CN202360108U discloses a simple, convenient, safe and reliable composite support structure, including a plurality of bolts extending into the rock. The second layer of reinforcement arch ribs is welded, the first layer of reinforcement mesh is closely attached to the rock surface, and the second layer of reinforcement arch ribs is respectively welded on the outside of the first layer of reinforcement mesh; in addition, the second layer of reinforcement arch ribs The steel mesh wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/14E21D11/18E21D11/15E21D11/10E21D20/00
CPCE21D11/10E21D11/14E21D11/152E21D11/18E21D20/00
Inventor 肖钰吴蕾岳竹余建平吴留伟郭云川
Owner 浙江省水利水电勘测设计院有限责任公司
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