掘进工作面通风布置对粉尘分布规律的影响

来源期刊:中南大学学报(自然科学版)2018年第9期

论文作者:周智勇 胡培 韩章程 陈建宏

文章页码:2264 - 2272

关键词:矿井通风;掘进巷道;数值模拟;粉尘

Key words:mine ventilation; excavation roadway; numerical simulation; dust

摘    要:针对深部通风面临的粉尘污染问题,结合气固两相流理论,采用长压短抽-前压后抽式通风方式,建立掘进巷道混合式通风三维模型。以湖南辰州矿业沃溪坑口为研究对象,选取4种通风布置参数即压风口与掘进面之间的距离、抽风口与掘进面之间的距离、抽压风量比、风筒高度,每种参数设置3种模拟方案,利用Fluent软件对不同方案下巷道内的粉尘浓度进行模拟研究,通过分析比较不同布置参数下的排尘效果,得出该混合式通风布置参数的最优值。研究结果表明:当压风口与掘进面之间的距离 =10.0 m,抽风口与掘进面之间的距离 =35.0 m,抽压比K=1.5,双风筒高度H=1.5 m时,通风排尘效果最理想。

Abstract: Aiming at the problem of dust pollution in the deep ventilation, the theory of gas-solid two-phase flow and combined ventilation systems in excavation roadway were used, and the three-dimensional numerical model of hybrid ventilation was established. Taking Woxi pithead of Chenzhou Mining as the research object, Fluent software was used to study the optimized ventilation method. The four layout parameters, i.e. the distance between the pressure vent and the heading surface, the distance between the suction and the heading surface, the suction pressure ratio of air volume and the height of fan drum, were selected. The effect of exhaust dust of the ventilation method in different setting parameters was analyzed, and the optimal value of the ventilation layout parameter was obtained. The results show that when the distance between the pressure vents and the heading surface is 10.0 m, the distance between the suction and the heading surface is 35.0 m, the suction pressure ratio of air volume is 1.5 and the height of fan drum is 1.5 m, the effect of dust exhaust is the most ideal.

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