高瓦斯工作面通风效果评价指标及隶属函数的确定

Determination of evaluation indexes of ventilation effect and their membership functions of working face with high volume fraction gas

总结了矿井通风系统评价方法的研究现状;针对现有矿井通风系统评价方法仅针对整个矿井,无法体现工作面通风情况的问题,提出了高瓦斯工作面通风效果评价指标体系;通过调查得出了直接影响工作面通风效果的8个评价指标,包括工作面风速、工作面温度、工作面湿度、工作面粉尘浓度、风量供需比、工作面瓦斯体积分数、上隅角瓦斯体积分数、回风巷瓦斯体积分数,给出了各评价指标的取值范围,并建立了各评价指标的隶属函数;将该评价指标体系应用于寺河煤矿W1301工作面通风效果评价,结果验证了该体系的合理性。

Research status of evaluation method of mine ventilation system was summarized.In view of problem that existing evaluation methods were only for entire mine and unable to show ventilation condition of working face,an evaluation index system of ventilation effect of working face with high volume fraction gas was proposed.Eight evaluation indexes were gotten which could influence ventilation effect of working face directly according to investigation,including wind speed of working face,temperature of working face,humidity of working face,dust concentration of working face,ratio of supply to demand of wind volume,volume fraction of gas of working face,volume fraction of gas of top corner and volume fraction of gas of return airway.Scope of each evaluation index was given and membership function of each evaluation index was established.The system has been applied in W1301working face of Sihe Coal Mine for evaluating ventilation effect with a result verifying rationality of the system.