摘要
漏风是导致采空区内部遗煤自燃的主要因素,掌握采空区的漏风分布与漏风通道是防止采空区遗煤自然发火的基础与前提。以青龙煤矿11808孤岛面为试验面,开展了SF_(6)示踪试验并对11808孤岛面采空区及相邻采空区的漏风状态进行了分析。结果表明,11808工作面的最大漏风量229.7 m^(3)/min,漏风率14.9%,11808孤岛面的进风巷与回风巷相邻的煤柱均发生了微小的漏风现象。孤岛面采空区内漏风路径先由21802工作面采空区流向11808孤岛面采空区,再由11808采空区流向11806工作面采空区。该研究结果可为类似孤岛面采空区遗煤自燃防治工作提供参考。
The leakage is the main factor that causes the coal to burn spontaneously in the empty area,and it is the basis and premise to control the leakage distribution and leakage channel of the mining area to prevent the coal from igniting and igniting in the mining area.Based on the test surface of Qinglong coal mine 11808,SF_(6) tracer test was carried out and the leakage state of 11808 island surface mining area and adjacent emptying area was analyzed.The results show that the maximum leakage volume of 11808 work surface is 229.7 m^(3)/min,the leakage rate is 14.9%,and the coal column adjacent to the inlet and backwind alleys on the 11808 island surface has a small leakage phenomenon.The leakage path in the island surface clearance area first flows from the 21802 work surface emptying area to the 11808 island surface emptying area,and then from the 11808 emptying area to the 11806 work surface emptying area.The results of this study can provide reference for the prevention and control of coal self-ignition in similar island surface mining areas.
作者
刘思鑫
李洪先
王国芝
朱明凯
任广意
LIU Si-xin;LI Hong-xian;WANG Guo-zhi;ZHU Ming-kai;REN Guang-yi(School of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Guizhou Qianxi Energy Development Co.,Ltd.,Bijie 551700,China)
出处
《煤炭技术》
CAS
北大核心
2021年第12期166-170,共5页
Coal Technology
作者简介
刘思鑫(1997-),山东聊城人,硕士研究生,研究方向:矿井火灾防治,电子信箱:827999127@qq.com.
