Metal Mining Law of natural wind pressure and Applications
|School||Jiangxi University of Technology|
|Course||Safety Technology and Engineering|
|Keywords||mine ventilation air pressure mechanical ventilation optimal match|
The pressure of natural wind is the complementary measure of the mine ventilation system, we must maintain the dynamic system at its best situation for ensuring safe production and reducing production cost. It is necessary to help vertilation through using the natural wind prssure or reducing the obstructing effection to the natural wind pressure. However,The dynamic system is affected by the continuous development and change of mine,which is disadvantage to the safe production and leads to unreasonable situation of the technologe economy. The above situation is common in the system of mine vertilation in China. It is not only improving the whole mine vertilation condition, but also reducing expenditure in the aspect of Power loss in winter by main fan under the assissting of natural wind pressure. We must adjust the power of main fan in time for ensuring good ventilation underground because natural wind hampers the ventilation of the main fan in summer. But now most of the mine are invested a large cost of human and finacial resources in the project of mine ventilaiton. This paper makes many simulating Researches in winter, summer, spring and autumn in two different situations, one situation is under the single affection of natural wind pressure and the other is the common affection of main fan and natural wind pressure, both of them take advantage of mine ventilation net solving software. The amount in winter, summer, spring and autumn respectively are 31m~3/s, 8.2m~3/s, 10.5m~3/s,but the sum amount of wind in the whole mine is 45.23m~3/s, Apparently, the factural amount of ventilation can not meet the sum amount of ventilation.However,it can offer 80.3m~3/s、45.4m~3/s、55.2 m~3/s, respectively in winter, summer, spring and autumn under the situation of common affection by main fan and natural wind pressure. From the above analyze, we know that the common affection of main fan and natural wind pressure can meet the demand of the wind in different seasons.