【正文】 s safety and the health seriously.The shaft builds systematic necessity of machinery ventilationVentilates the question is the artillery smoke poison accident principal factor According to the preliminary statistics, in 2006 has noncoal mine 3 human of above heavy especially big accident altogether 74, died 311 people, in which underground mine (including pares prospects) artillery smoke poison accident 22, died 76 people, separately occupies the noncoal mine heavy especially big accident 28% and 24%.But in these artillery smoke poison accident, the establishment artificial draft systematic, the well ventilated facility imperfect, has not carried on the pulsion artificial draft or forced draft not full causes the primary cause which the accident occurs. If in December, 2006 occurs in the Yunnan lancang 23 lead ore limited pany Gigantean loose wooded mountain leadzinc mine, the Inner Mongolian group dragon industry limited pany, the Guizhou gold Xin mining industry limited pany chaotic crag pond mercury ore, the Yunnan Yuanyang County gold pany, the Gansu Yangshan gold ore artillery smoke poison accident, is because has not begun using the draft equipment, creates under the natural ventilation conditionIs been natural ventilation big the seasonal variation influence, the main performance is: 1. Amount of wind are unstable. The Spring and Autumn Period season enters, returns to the air shaft temperature difference to be small, the natural wind pressure is small, ventilates the effect to be bad, even can appear the zero amount of wind the situation. 2. Loose directions are unstable. The summer winter season loose direction is opposite, the spring and Autumn Period season natural wind pressure is small, the loose direction is unstable. 3. In the natural ventilation situation, the mine pit cannot implement forces the counterwind, does not favor the mine fire, the virulent noxious gas proliferation spread control. On November 20, 2004, creates 70 dead, direct economic loss 600 ten thousand Yuan Hebei Xingtai Shahe city Li Shengwen the iron ore mine shaft fire accident, one of its expanded primary causes then does not have the independent consummation ventilation system, 5 mine shafts mutually between by the old tunnel which abandons and without processing pick the depletion region connection, even between various ores even lane direct connected, adds all mines to select the natural ventilation method, has formed the entire mining area mine shaft wind era path big circulation, causes the connected various ores to receive the accident mine fire haze the pollution.The shaft builds systematic feasibility of machinery ventilationThe mine enterprise is take seeks to make a profit as the main purpose resources enterprise, the enterprise establishes the artificial draft system to consider the cost and the benefit inevitably. Ventilates the cost by the equipment amortization fund, the power expense, the materials expenses, the well ventilated labor wages, specially for ventilates the service the well lane project amortization fund and the maintenance expense, the well ventilated measuring appliance purchase expense and the maintenance cost and so on 6 kind of constitutions. The next table was to the Shandong gold range iron ore marquis village, the hard mountain, summons the mouth 3 ores in August, 2002 to ventilate the expense the statistics. The mine enterprise is take seeks to make a profit as the main purpose resources enterprise, the enterprise establishes the artificial draft system to consider the cost and the benefit inevitably. Ventilates the cost by the equipment amortization fund, the power expense, the materials expenses, the well ventilated labor wages, specially for ventilates the service the well lane project amortization fund and the maintenance expense, the well ventilated measuring appliance purchase expense and the maintenance cost and so on 6 kind of constitutions. The next table was to the Shandong gold range iron ore marquis village, the hard mountain, summons the mouth 3 ores in August, 2002 to ventilate the expense the statisticsThe machinery ventilation responds to the problem paying attention toMetal Nonmetallic Mine safety Regulations stipulation country the family supervises and manages the bureau promulgation Metal Nonmetallic Mine safety Regulations (to hereafter refer to as Regulations safely) to stipulate that, “The mine pit should establish the artificial draft system. Regarding natural wind pressure big mine pit, when the amount of wind, the wind speed and the work place air quality can achieve when Regulations mine shaft air stipulation, the permission uses natural ventilation to substitute the artificial draft temporarily. But” the original regulations stipulated that, “All mine pits must establish the perfect artificial draft system.” The new regulations stipulation original regulations stipulation is more scientific rigorously, more reasonable feasible. Our country39。 3. forms the penetration in the entire mine pit to be loose. The mine pit artificial draft system, according to enters the air shaft with to return to the air shaft to be different in well field scope arrangement way, divides into the central like ventilation system, opposite angle type ventilation system and the central opposite angle mixed style ventilation system。s to carry on the mine pit artificial draft theory and the applied research, the modern mine pit uses the artificial draftShaft machinery ventilation systemThe mine pit mechanical vantages system refers to the mine pit for, the row of wind equipment facility system, including the mine ventilation network, the well ventilated power equipment, the mine ventilation construction and other ventilates controls the facility. The mine pit consummates the artificial draft system must have following 3 essential factors: 1. must have at least reliable e