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为建立稳定可靠的矿井通风系统和保证煤矿安全生产,采用概率论与数理统计的方法,分析矿井巷道风阻的变化规律,研究通风系统巷道故障的规律分布.以小青煤矿为例把矿井巷道分为两大类:均匀分布型故障巷道和正态分布型故障巷道,定义了矿井巷道的故障概率函数.根据概率密度函数,确定通风系统故障的判断函数.研究小青煤矿通风巷道故障对整个通风系统的影响关系.研究结果表明:小青煤矿在维修周期内通风系统单一巷道故障概率一定时,通风系统没有发生故障;当多个巷道以一定的故障概率并行存在时,得出通风系统故障与不故障两种可能.
In order to establish stable and reliable mine ventilation system and ensure coal mine safety production, the probability law and mathematical statistics method are used to analyze the variation rule of mine roadway resistance and to study the regular distribution of mine roadway failure. Taking Xiaoqing Coal Mine as an example, Is divided into two categories: uniform distributed fault lane and normal distributed fault roadway, defined the mine roadway fault probability function.According to the probability density function, to determine the ventilation system fault judgment function.Study Xiaoqing coal mine ventilation tunnel fault on the entire ventilation System.The results show that there is no failure of the ventilation system when the failure probability of a single roadway in the ventilation system is constant in the maintenance cycle of a small coal mine and the failure of the ventilation system is obtained when multiple roadways exist in parallel with a certain probability of failure Not fault two possibilities.