基于点火源模型反演测算煤矸石山着火点深度研究  

Study on inverting calculation of ignition point depth in coal waste pile based on ignition source model

作　　者：胡振琪[1,2] 高杨[1,2] 苏未曰[1] 夏清[1,2] 曾纪勇[1,2] 

机构地区：[1]中国矿业大学(北京)土地复垦与生态重建研究所,北京100083 [2]矿山生态安全教育部工程研究中心,北京100083

出　　处：《煤炭科学技术》2015年第1期134-137,20,共5页Coal Science and Technology

基　　金：国家自然科学基金资助项目(41371502)

摘　　要：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 simple, effective 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 applied to establish reverse mathematic model of firing point depth in coal waste pile.With calculation on temperature ratio between surface feature temperatures ,a fitting approximation 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 point 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 witb a borehole temperature 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 firing point depth of coal waste pile during spontaneous combustion.

关 键 词：煤矸石山 着火点深度 点火源模型 表面温度 

分 类 号：TD98[矿业工程—选矿]