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Cleaning method for tunnel dry ice

A dry ice cleaning and tunnel technology, applied in the field of tunnel cleaning, can solve problems such as the destruction of cleaning objects, achieve clean secondary pollution, no secondary pollution, and improve cleaning efficiency.

Inactive Publication Date: 2012-12-26
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the water jet has a large energy, and it is easy to damage the cleaning object during the cleaning process.

Method used

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  • Cleaning method for tunnel dry ice
  • Cleaning method for tunnel dry ice
  • Cleaning method for tunnel dry ice

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Embodiment Construction

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] see figure 1 , tunnel dry ice blasting method, adopt a kind of tunnel dry ice blasting machine in this method, this dry ice blasting machine comprises engineering vehicle 1, air compressor 8 and the liquid carbon dioxide storage tank 2 that is arranged on engineering vehicle 1, cleaning nozzle machine bogie 3. Cleaning control display 4, control platform 5 and dry ice blasting device 9. The air compressor 8 is rigidly connected with the engineering vehicle 1 through the traction frame 7 . The cleaning control display 4 is installed on the control platform to display the status parameters of the entire equipment; the control platform 5 is packaged with a control system, and the entire equipment is controlled by the control system; there is also a chair 6 behind the control platform 5, which is convenient for operation Personne...

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Abstract

The invention discloses a cleaning method for tunnel dry ice. The method comprises the following steps: 1) respectively connecting an air compressor, a liquid carbon dioxide storage tank and a dry ice cleaning device, and checking gas tightness; 2) connecting the dry ice cleaning device and interfaces of each nozzle set on a cleaning nozzle machine bogie; 3) driving an engineering truck into a tunnel inlet to be cleaned, and adjusting the cleaning nozzle machine bogie; 4) opening the air compressor, opening a valve connected with the dry ice cleaning device after the pressure of the air compressor reaches set value; 5) opening the carbon dioxide storage tank valve; 6) uniformly progressing the engineering truck with low speed, assuring the cleaning time of each cleaned surface for 1-2 seconds; 7) closing the liquid carbon dioxide storage tank valve after finishing cleaning. The cleaning method develops a device suitable for cleaning the tunnel dry ice according to physico-chemical property of carbon dioxide, thermodynamic principle and dry ice cleaning characteristics; according to the cleaning method for tunnel dry ice, the ejected dry ice is dry ice sand which has soft texture, small grain diameter and low density, so that the surface of cement is favorable for cleaning and has no injury to the cement, thereby reducing the influence of void and fissuring of the cement surface caused by dry ice micro detonation.

Description

technical field [0001] The invention relates to the technical field of tunnel cleaning, in particular to a tunnel dry ice cleaning method. [0002] Background technique [0003] In recent years, with the gradual expansion of the scale of my country's transportation infrastructure construction and the rapid development of highway construction, the proportion of tunnel mileage to the total mileage of routes is also increasing. By the end of 2008, the total mileage of expressways in my country had reached 60,000 kilometers, and the mileage of tunnels was close to 3,000 kilometers. Expressway construction in Chongqing has developed rapidly in recent years. By the end of 2009, the mileage of expressways in operation exceeded 1,500 kilometers. Because it is located in the southwest mountainous area, the proportion of expressway tunnels in Chongqing is larger, and many tunnels are long tunnels. [0004] In tunnels, especially long tunnels, the exhaust gas emitted by automobiles i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01H1/00
Inventor 任松姜德义杨春和何华勇师燕滑王震陈结
Owner CHONGQING UNIV
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