Applied Research On Ensuring Technology Of The Ventilation System And Expand Capacity In The Changcun Mine

The dissertation studies the present ventilation system situation of Changcun mine.First,through the comprehensive analysis of the existing ventilation system of Changchun mine to conduct a preparation for expansion,second,according to the coal mining plan to expand the production,then according to the existing problems in the coal mine ventilation system and put forward the corresponding measures to ensure stable and reliable operation of the ventilation system.The dissertation analyzes the existing ventilation system and the coal mining plan of Changcun mine.The +520 level of mining is nearing completion,Changcun mine gradually transits to the +470 mining level,there are three schemes:1)constructing return air shaft;2)extending S3 mining and incorporating ventilation system of +470 level;3)extending S6 mining.Through the simulation of the ventilation system information management software,the best scheme is selected.In order to improve the reliability and stability of coal mine ventilation system,taking the following measures:1)through the innovation of Changcun mine ventilation system to achieve the purpose of independent ventilation;2)the dissertation simulates ventilation system in the different cases when the fan stalls and proposes the solutions to ensure that the ventilation system is stable and reliable operation;3)the dissertation proposes the corresponding measures though the simulation of reversing airflow in multi-shaft mine,when the fire occurs in mine,these measures make it possible for persons affected by the fire to have sufficient time to evacuate and reduce the disaster spread range,at the same time they can reduce casualties caused by fire accident;4)according to the results of air door failure simulation,taking corresponding measures to ensure the stability of the ventilation system.