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Shield tunneling machine first used in a kilometer-underground coal mine


Juye, July 26 - tunnel tunneling shield machine is now applied to the coal mine. On July 20, Xinkuang no.1, China's first shield tunneling machine with large diameter and deep buried section, was put into operation in the 980m shaft of New Dragon Company, Shandong Energy Xinwen Mining Group.It integrates tunneling, slag discharge, support, dust removal, ventilation, guidance and explosion protection technology, and the tunneling efficiency can be increased 5 to 10 times.