my country's first large slope spiral tunnel excavation machine is offline

Xinhua News Agency, Beijing, September 5th (Fan Xi, Xu Haobing) Reporter learned from China Railway Construction Co., Ltd. on the 5th that the hard rock tunnel excavation machine jointly created by China Railway Construction Heavy Industry Group and China Railway 18th Bureau Group "No." officially offline. This is my country's first large -slope spiral tunnel excavator, which will participate in the construction of slope construction of the underground laboratory of Beishan High -Platform waste geological disposal.

According to Xu Chunxian, the person in charge of the construction of the Beishan underground laboratory of the 18th Bureau of China Railway, the slope road of the Beishan Underground Lab is about 7.2 kilometers long. It is the first slope project in my country to use a full -cut hard rock excavator construction. Equipment is a problem of spiral small turns in the continuous large slope tunnel.

"'Beishan No. 1' needs to excavate a spiral curve slope in the Beishan underground laboratory. The project is excavated in a clockwise spiral when the project is downward, and the comprehensive slope is 10%, which is equivalent to 10 meters of tunnels. 1 meter, "Xu Chunxian said.

Beishan underground laboratory is a national key project planned for the "Thirteenth Five -Year Plan" period. In June 2021, the construction of the Beishan Underground Laboratory marked the stage of the construction and development of underground laboratories in the underground laboratory construction and research and development stages of high waste geological disposal in my country.

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