For the first time in China, "Cornerstone" was launched in Anshan Iron and Steel West Anshan Iron Ore Project.
On December 10, the TBM (full-section hard rock tunnel boring machine) "Cornerstone", which was first used in the construction of underground iron mines in China, was launched in the West Anshan Iron Ore Project of Anshan Iron and Steel Co., Ltd.
The picture shows the full-section hard rock tunnel boring machine "Cornerstone" at the construction site of Anshan Iron Ore Project in Anshan West. Photo by Cong Nan.
Located in Anshan City, Liaoning Province, the West Anshan Iron Ore Project officially started in November 2022 and is the largest single underground iron ore project in China. This project is the first to apply TBM to the construction of underground iron mines, creating a precedent for the research and application of TBM key technologies and equipment at home and abroad.
TBM is the world's most advanced tunnel construction machinery, with the advantages of fast tunneling speed, environmental protection and high comprehensive efficiency, and can carry out tunnel construction under complex geological conditions that are difficult to operate by traditional drilling and blasting methods, and is currently widely used in tunneling projects such as railways, hydropower, transportation, and subways.
According to reports, the "cornerstone" has a total length of 188 meters and an excavation diameter of 703 meters, with a total weight of 1200 tons. After it is put into use, compared with the traditional drilling and blasting method, the comprehensive efficiency of construction can be increased by more than 3 times.
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