松散煤体氧自由扩散特性的定量分析  

Quantitative study on oxygen free-diffusing characteristics in loose coal

作　　者：桂来保[1] 罗海珠[2] 梁运涛[2] 

机构地区：[1]安徽理工大学资源开发与管理工程系,安徽淮南232001 [2]煤炭科学研究总院抚顺分院,辽宁抚顺113001

出　　处：《安徽理工大学学报（自然科学版）》2004年第1期12-14,24,共4页Journal of Anhui University of Science and Technology:Natural Science

基　　金：国家自然科学基金资助项目(50174030)

摘　　要：以ODT-1型氧扩散特性实验装置为手段,考察测试了不同环境温度、不同粒度松散煤体典型煤样对氧的自由扩散特性。结果表明:煤的破碎程度是氧在煤体表面扩散作用的主要度量因子;环境温度的变化对氧扩散特性的影响关系不大;扩散系数和煤样粒度的倒数之间有明显的趋势关系,在一定程度上可以用来定量描述煤自身本构特性参数对自然发火的综合影响程度。With the oxygen diffusing tester typed ODT-1, the oxygen free-diffusing characteristics in loose coal are studied under different temperature condition and different granularity coal. The result shows that the coal broken degree is the main token factor for measuring the oxygen free-diffusing characteristics in coal. Otherwise, the influence is little related to the environmental temperature changes. The diffuse coefficient has a distinct trend of coherence with the change of the reciprocal of coal granularity. Moreover, to some extent, the diffuse coefficient can be used to quantitatively denote the degree of the influence of coal native parameters upon spontaneous combustion.

关 键 词：松散煤体 氧 自由扩散特性 定量分析 煤炭自然发火 灾害 

分 类 号：TD75[矿业工程—矿井通风与安全] TD71