摘要
针对综采面"采场-邻空煤柱-采空区"间的漏风微循环现象,利用MATLAB中的PDE工具进行二维非线性渗流的数值模拟,同时分析研究漏风微循环现象形成的原因,以及漏风微循环对煤炭自燃的影响。研究表明,"采场-邻空煤柱-采空区"间的漏风微循环可以导致采空区内相对压力和气体成分的周期性变化,即"采空区喘息"现象。
As a two dimensional nonlinear transfusion model,the "stope- neighboring pillars- goaf"micro- circulation phenomenon was numerically simulated with PDE tools in MATLAB. The formation of the phenomenon and its influence on coal spontaneous combustion was also studied. The results show that the "stope- neighboring pillars- goaf"micro- circulation causes the periodic variation of relative pressure and gas composition in mining face goaf,which is called "goaf gasp". The research gives a theoretical significance for large- area fire prevention and extinguishing.
出处
《河北工程大学学报(自然科学版)》
CAS
2016年第3期85-88,103,共5页
Journal of Hebei University of Engineering:Natural Science Edition
基金
国家自然科学基金资助项目(51074168)
关键词
邻空煤柱
漏风微循环
采空区喘息
防灭火
neighboring pillar
air leakage micro-circulation
goaf gasp
fire prevention and extinguishing