Study on ventilation guarantee in explosion accident of capital construction mine

During the period of mine infrastructure construction, the underground production system is not perfect and the mine ventilation network is not mature, which brings many obstacles to the promotion of shaft construction projects.In view of the actual ventilation problems highlighted in this kind of mine explosion accidents, such as the damage of the original ventilation system, the excessive toxic gas, the low visibility of the shaft, and the difficulty of sending fresh air, taking the “1·10”explosion accident of Hushan Gold Mine in Qixia, Shandong Province as an example.The rapid organization of local ventilation, the optimization of ventilation scheme by pumping negative pressure air duct, the detection of mine conditions, the calculation of gas concentration various ventilation guarantee measures such as forced fresh air supply and the establishment of natural ventilation network by drilling are summarized and analyzed.The practice results show that reasonable mine ventilation guarantee is not only a necessary condition for the development of underground rescue work, but also a basic element to maintain the vital signs of trapped people and reduce the erosion of toxic gas.Relying on the ventilation strategy under the actual conditions of the front line, real-time adjustment and cooperation with multiple disciplines and types of work provide important support for the smooth implementation of ventilation guarantee measures.The positive reflection and accumulation in the rescue practice is of great practical significance to further improve the ventilation guarantee system in similar accidents and establish and improve the disaster prevention mechanism of capital construction mines.