Strive for strong provincial capital to welcome the 20th. New breakthroughs!The world's first large slope spiral tunnel excavator is offline in Changsha!

On the 4th, a hard rock tunnel excavator with a diameter of 7.03 meters was offline at Changsha Second Industrial Park, China Railway Construction Heavy Industry Group. The screw -type excavation of the 380 -meter curve radius is the world's first large slope spiral tunnel excavator, which will participate in the construction of the slope of the underground laboratory of Beishan in Gansu.

"Beishan No. 1" is offline in Changsha.

This excavator was named "Beishan 1" and was jointly built by China Railway Construction Heavy Industry Group and China Railway 18th Bureau Group. "Beishan No. 1" needs to excavate a spiral curve slope in the underground laboratory of Beishan. The project is excavated in a pneeling of the pneeling when the surface is downward. Meter.

Xu Chunxian, the person in charge of the construction of the Beishan Underground Laboratory of China Railway Eighteenth Bureau, introduced that the slope road of the Beishan Underground Lab is about 7.2 kilometers long. It is the first slope project in the world to use a full -breaking hard rock excavation machine. Small spiral turns in the Greater Poor Tunnel excavate the problem; at the same time, the engineering geology is mainly based on breeze granite. The quartz content reaches 25%-30%. Geological.

In response to the characteristics of extremely hard rocks and large slopes facing the project, the "Beishan No. 1" development team carried out targeted design, providing technical equipment solutions for the rapid construction of the project slope.

Wu Min, deputy dean of the China Railway Construction Heavy Industry Group's excavator research and design institute, introduced that the blade is equivalent to the iron tooth steel teeth of the excavation machine. Formed the air -to -air surface, compared with the traditional plane blade of the rock breaks of the rock breaking, it can meet the requirements of the engineering pole hard rock construction; in order to increase the flexibility of the excavation machine on the large slope spiral turning, the development team improved the spatial structure of the host system. In addition, advanced orientation, direction control early warning, and auxiliary driving automatic cruise system, enables the excavator to have the ability to excavate the large slope spiral curve.

The Gansu Beishan Underground Lab, which was built by the 18th Bureau of China Railway, is a national key project planned during the "Thirteenth Five -Year Plan" period. Perform the construction progress of the construction of Beishan underground laboratories.

Source 丨 Changsha releases comprehensive materials 丨 New Hunan, Changsha Evening News, Star Online, Iron Construction Heavy Industry

Edit 丨 Wen Chunyan School Division 丨 Chen Meng

Review 丨 Du Jin

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