摘要
基于理想化的大倾角工作面及采空区建立二维直角坐标系,结合采煤工作面的温度分布模型,以微积分的形式,建立大倾角工作面热风压模型。在大倾角工作面热风压模型的基础上,结合采空区热风压作用规律的四个不同阶段,以采空区临界点、临界温度为基础,推导出采空区漏风风路风流方向的判定条件。通过对山东某矿3206工作面分析得出:3206工作面处于热风压作用的第四个阶段,即采空区内部高温有害气体沿漏风风路从工作面上隅角涌入工作面。
Under the two-dimensional rectangular coordinate system established in idealized large dip angle working face and goaf,and combined with the temperature distribution model of coal face,a heat wind pressure model of large dip angle working face was set up in the form of calculus.Based on this model and combined with the four different stages of heat wind pressure action law in the goaf,the wind direction judging criteria of air leakage wind path in goaf were deduced from the analysis of the critical point and critical temperature.The analysis of working surface 3206 in a mine in Shandong showed that during the fourth stage of heat wind pressure action,the high temperature and noxious gas inside the goaf went up from the upper corner onto working face 3206 along the air leakage wind path.
出处
《山东科技大学学报（自然科学版）》
CAS
2016年第5期42-48,共7页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学青年科学基金项目(51204103)
关键词
大倾角
漏风通道
高温热害
热风压
采空区
large dip angle
air leakage channel
high temperature and heat harm
heat wind pressure
goaf
