With the continuous improvement of the country's requirements for the construction of "six major systems" in coal mines, in the process of coal mine production and management, the communication system plays a vital role in coal mine safety production, command and dispatch, emergency rescue and other aspects。The coal mine industry should be further committed to creating a safe and reliable communication command and dispatch, strengthen the improvement of communication system equipment, ensure real-time scheduling management of the production process, and achieve a high degree of integration of coal mine communication systems。...

This project is mainly composed of Qinling water transmission tunnel, Golden Gorge water project and Sanhekou water project。And up to 98.The 3km Qinling Mountain water tunnel has become a top priority。The maximum buried depth of the tunnel reaches 2012 meters from the ground, which needs to overcome the worldwide problems such as ultra-long distance ventilation, water gushing, mud gushing, rock burst and high temperature geothermal。...