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以钻头、药卷、铭杆为特点的极进和支护施工技术。实践证明,它是提高巷道掘进效益,确保工程质全的有效途径。
Extremely advanced and support construction technology featuring drill bit, medicine roll and Ming-pole. Practice has proved that it is an effective way to improve the tunneling benefit and ensure the quality of the project.