high altitude

In order to enhance the overall safety management level of mechanized drilling and blasting operations in high⁃altitude tunnels, through the analysis of the full⁃process systematic mechanized construction practice implemented in high⁃altitude tunnels,solutions were proposed from the perspectives of

Aiming at complicated geological conditions, large buried depth, excessive toxic and harmful gases,and high altitude in Sichuan⁃Tibet region, through investigation and analysis of the current situation of large⁃scale mechanical construction equipment in a certain section of Sichuan⁃Tibet Railway

Jiama mine of Huatailong company,located in the snow covered plateau of Tibet,is one of the largest copper gold polymetallic mines in China.The bad weather conditions and low mechanization level are the bottlenecks restricting the rapid development of enterprises.In order to achieve large-scale