A support device for loess tunnel construction
A technology for supporting devices and loess tunnels, applied in tunnels, mining devices, tunnel linings, etc., can solve the problems of high labor intensity, heavy workload, leaving traces of small formwork, etc., to achieve good results and improve construction efficiency.
Inactive Publication Date: 2019-09-06
CHINA RAILWEY ENG SERVICE CO LTD
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Problems solved by technology
[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a support device for loess tunnel construction to solve the difficulty in assembling the existing small formwork, the workload is large, the labor intensity is high during variable cross-section construction, and the lining surface will leave obvious Small formwork traces, poor apparent quality, can not meet the requirements of lining quality
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[0023] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0024]see Figure 1-Figure 6 , the present invention provides a technical solution for a loess tunnel construction support device: its structure includes an anti-tilt alarm mechanism 1, a block 2, a loess body 3, a segmented large formwork 4, an adjustable support frame 5, an auxiliary door frame 6, and a jack 7. I-beam 8, supporting I-beam 9, side wall hanging board 10, the sectioned large formwork 4 is an arc structure, and the sectioned large formwork 4 is fixed below the loess body 3, and passed through The connection is reinforced by bolts. There are two wooden blocks 2, which are respectively located at the bottom of the loess body 3. The anti-tilt alarm mechanism 1 is respectively welded on the top of the wooden blocks 2, and is connected b...
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The invention discloses a supporting device for loess tunnel construction. The supporting device structurally comprises anti-tilt alarm mechanisms, two skid blocks, a loess body, a segmented large formwork, adjustable support frames, an auxiliary portal frame, jacks, I-steel, support I-steel, and side wall hanging panels. The segmented large formwork is of an arc-shaped structure, and the segmented large formwork is fixedly arranged below the loess body and connected in a reinforced mode through bolts; the two skid blocks are separately arranged at the bottom of the loess body; and the anti-tilt alarm mechanisms are separately welded to the tops of the skid blocks and connected in a reinforced mode through bolts. According to the supporting device for the loess tunnel construction, slidingrods can be fixed through fixing blocks, in the way, the effect of the sliding rods during use is better, so that the problem that the sliding rods drop after long-time use due to the fact that the sliding rods become loose after long-time use is avoided, the effect of preventing the I-steel from tilting is played, therefore, the effect of the I-steel during construction is better, and the efficiency of tunnel construction is improved.
Description
technical field [0001] The invention relates to a loess tunnel construction support device, which belongs to the technical field of loess tunnel construction. Background technique [0002] During tunnel construction, the construction of large-section loess tunnels follows the principles of the "New Austrian Method" and follows the principles of "early forecasting, pipe advance, non-blasting, short excavation, less disturbance, strict water control, strong support, early closure, frequent measurement, The principle of "tight lining" is advancing steadily. Immediately after the excavation, the initial support shall be carried out to ensure that the surrounding rock is closed in the shortest time, the inverted arch is completed in time, and the section steel is formed into a ring. The places where the force is greater are the arched waist and arched feet. [0003] However, the existing small formwork is difficult to assemble, the workload is heavy, and the labor intensity is ...
Claims
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IPC IPC(8): E21D11/00E21D11/04E21D11/02E21D11/14E21F17/18
Inventor 张罗悦
Owner CHINA RAILWEY ENG SERVICE CO LTD