摘要
大柳塔煤矿全断面快速掘进系统使用过程中,出现了巷道内煤尘质量浓度超标和锚杆机前方风量不足问题。根据全断面快速掘进设备的布置特点,设计了长压短抽通风方式降尘增风。为预测长压短抽通风方式的效果,利用Gambit前处理软件建立了掘进工作面物理模型。基于气固两相流和射流理论,采用离散相模型,利用Fluent软件模拟工作面煤尘在不同抽压风量、不同抽压风口位置和不同抽吸比条件下粉尘质量浓度分布规律。该研究可以为长压短抽通风方式风机设备的选型和布局提供科学依据。
This paper seeks to address the problems,such as the excessive coal dust concentration in tunnels and a lack of new air between the bolting machine and working face—which arise from the working process due to the use of a new kind of full section tunnel boring machines in Daliuta coal mine.These issues are eliminated by designing a sort of ventilation method defined as long-pressure and shortpumping ventilation mode according to the layout characteristics of the excavation system. The study aimed at the elimination consists of using Gambit pretreatment software to establish the physics model for the excavation system for the purpose of predicting the effectiveness of long-short ventilation; applying discrete phase models of the theory of gas-solid two-phase flow and jet and using Fluent to simulate the law underlying the distribution of coal dust occurring in the conditions of different quantity and ratio of pressing air volume to absorption air volume; and different outlet locations of the pressing air and absorption air volume. The result may provide a scientific reference for the selection and arrangement of fan equipment tailored for long-pressure and short-pumping ventilation mode.
作者
刘永立
刘迪
沈斌
Liu Yongli Liu Di Shen Bin(Key Laboratory of Mining Engineering of Heilongjiang Province College, Heilongjiang University of Science ＆ Technology, Harbin 150022, China)
出处
《黑龙江科技大学学报》
CAS
2016年第5期475-479,共5页
Journal of Heilongjiang University of Science And Technology
基金
国家自然科学基金项目(51474099)
