Research Institute of Land Reclamation and Ecological Restoration,China University of Mining and Technology(
Beijing) MOE Engineering Research Center of Mine Ecology and Safety

针对传统煤矸石山自燃过程中深部着火位置不明,且缺乏简单有效安全的测定着火点深度方法等问题,以简单稳态线性模型理论为基础,基于单点火源模型的反演方法,建立了煤矸石山着火点深度反演的数学模型。通过计算表面特征温度点之间的温度比值,采用拟合逼近真实值的方法进行数值求解,得到煤矸石山着火点深度。应用该方法对王庄煤矿煤矸石山南坡着火点深度进行测算,结果表明,其与钻孔测温得出的着火点深度相比误差为13 cm,可以满足煤矸石山自燃防治的需求,为判定煤矸石山自燃时着火点深度的获取提供了新思路。

According to an unclear firing location in a deeptraditional coal waste pile during a spontaneous combustion process,lacking of simpleffective and safety method to measure a firing point depth and other problems,based on simple steady-state linear model theory as a base,reverse method of single firing source model was a pplied to establish reverse mathematic model of firing point depth in coal waste pile. With calculation on temperature ratio between surface feature temperatures,a ftting a pproximation actual value method was applied to the numerical solution and a firing point depth in the coal waste pile was obtained. The method was applied to a firing poi nt depth in the south slope of Wangzhuang Mine Coal Waste Pile and the calculation results had an error of 13 cm to a firing point depth measured with a borehole tempera ture measurement. The method could meet the requirements of the spontaneous combustion prevention for the coal waste pile and could provide new idea to have the firin g point depth of coal waste pile during spontaneous combustion.

国家自然科学基金资助项目(41371502)；