Tunnel telescopic thermal insulation structure and tunnel thermal insulation method
A thermal insulation and telescopic technology, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as irreversible damage, thermal insulation performance degradation, and inability to approach the tunnel face at a short distance, so as to avoid irrecoverable Sexually destructive effects
Active Publication Date: 2020-10-09
SOUTHEAST UNIV
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Problems solved by technology
[0006] (1) Due to the phenomenon of water leakage in the surrounding rock during the construction period, the environment in the cave is relatively humid, and the existing solid insulation materials are very easy to absorb water, resulting in a decline in insulation performance
At the same time, the surrounding rock section after construction blasting is uneven, and it is impossible to lay suitable solid insulation materials to keep close contact with the rock wall; construction blasting itself will also cause irreversible damage to the existing solid insulation structure
Therefore, when laying solid insulation materials, it is impossible to get close to the face of the tunnel, and it is difficult to improve the working environment of workers.
Method used
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[0033] The preferred implementation of the present invention will be described in detail below with reference to the accompanying drawings.
[0034] The telescopic thermal insulation structure of the tunnel in this embodiment is as follows: figure 1 , figure 2 , image 3 and Figure 4 As shown, it is mainly composed of flexible fabric 1, skeleton 9, U-shaped track 6 and airbag 2. Wherein the skeleton 9 is arched, and the flexible fabric 1 is laid on the skeleton; the bottom of the skeleton 9 has a skeleton vertical bar 4 and a cross bar 5, which are socket-type connected with the U-shaped track 6; airbags 2 and Trachea, the airbag 2 is inflated by the trachea. After inflation, the airbag forms a closed space between the inner and outer layers of flexible fabrics, as well as between the exposed surrounding rock and the flexible fabric laid on the outer layer of the skeleton. The groove inboard of U-shaped guide rail 6 has chute, and the skeleton vertical bar 4 and cross ba...
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The invention provides a tunnel telescopic type heat-preservation thermal-insulating structure which comprises a framework, a flexible fabric, a guide track, airbags and an air tube, wherein the framework consists of a plurality of arc-shaped frames; the arc-shaped frames are connected by inner and outer layers of the flexible fabric; the bottom end of the framework is in sliding matching with theguide track; the airbag is arranged at the front end, the rear end and the lower end of the framework; when the airbags are inflated, a first sealed space is formed between the inner and outer layersof the flexible fabrics and the inflated airbags at the front end, the rear end and the lower end; a second sealing space is formed among exposed surrounding rock, the outer layer of the flexible fabric and the inflated airbags at the front end, the rear end and the lower end. By adopting the structure, heat preservation can be implemented on a tunnel. The structure can be rapidly withdraw and repeatedly used, can be extended, shrunk and steered according to demands, is capable of effectively preventing irrecoverable damage caused by explosion to heat-preservation structures, can be adjustedaccording to practical construction conditions, and has the advantages of being economic, environmental-friendly, efficient and the like.
Description
technical field [0001] The invention is applied to the fields of thermal insulation of surrounding rocks of high-temperature tunnels and thermal insulation of frozen soil tunnels, and in particular relates to a telescopic tunnel thermal insulation structure and a mobile tunnel thermal insulation method. Background technique [0002] During the construction of Sichuan-Tibet railway tunnels, it is difficult to solve the problem of high ground temperature. The exposed rock body releases heat into the tunnel, causing the air temperature in the tunnel to be too high, up to 80 degrees. Using existing cooling methods, such as ventilation and river water cooling, the temperature can only be controlled at about 40 degrees. Moreover, when the temperature is lowered at this stage, the exposed surrounding rock has not been insulated, and the heat source has not been isolated from the source. The heat source still exists and interferes with other means of cooling, so how to effectively ...
Claims
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IPC IPC(8): E21D11/38
Inventor 张国柱张书棋郭易木陈家威姜国栋王维
Owner SOUTHEAST UNIV