Cleaning method for tunnel dry ice
A technology of dry ice cleaning and tunneling, which is applied in the field of tunnel cleaning, can solve the problems of cleaning objects such as damage, achieve clean secondary pollution, no secondary pollution, and improve cleaning efficiency
Inactive Publication Date: 2014-06-18
CHONGQING UNIV
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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.
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[0028] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
[0029] See figure 1 , Tunnel dry ice cleaning method, in which a tunnel dry ice cleaning machine is used, the dry ice cleaning machine includes an engineering vehicle 1, an air compressor 8, a liquid carbon dioxide storage tank 2 and a cleaning nozzle machine bogie provided on the engineering vehicle 1 3. Cleaning control display 4, control platform 5 and dry ice cleaning device 9. The air compressor 8 is rigidly connected with the engineering vehicle 1 through a 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 encapsulated with a control system, and the entire equipment is controlled by the control system; there is a chair 6 behind the control platform 5 for easy operation The personnel sit on the chair 6 to operate the entire co...
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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. Background technique [0002] In recent years, with the gradual expansion of my country's transportation infrastructure construction scale and rapid development of highway construction, the proportion of tunnel mileage to the total mileage of the route is also increasing. As of the end of 2008, the total mileage of highways in my country has reached 60,000 kilometers, and the mileage of tunnels is close to 3,000 kilometers. The expressway construction in Chongqing has been developing rapidly in recent years. By the end of 2009, the mileage of expressway opened to traffic exceeded 1,500 kilometers. Because it is located in the southwest mountainous area, the proportion of Chongqing expressway tunnels is larger, and many tunnels are long tunnels. [0003] In tunnels, especially long and large tunnels, the exhaust gas emitted by vehicle operation ...
Claims
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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