U型通风采空区自燃“三带”划分研究_中国煤炭行业知识服务平台

U型通风采空区自燃“三带”划分研究

Title

Research on the "Three Zones" Division of Spontaneous Combustion in the U-shaped Ventilation Goaf
作者

冀凯戴子栋
Author

Ji Kai;Dai Zidong
单位

河南龙宇能源股份有限公司陈四楼煤矿
Organization

Henan Longyu Energy Co., Ltd.
摘要

通过氧气浓度指标法，利用FLUENT数值模拟软件及现场布设束管对陈四楼煤矿21210工作面采空区自燃“三带”范围进行划分。结果表明：陈四楼煤矿21210工作面现场实测和数值模拟的自燃“三带”范围基本一致。进风侧：散热带0～78 m，氧化升温带78～129 m，窒息带大于129 m。回风侧：散热带0～42.5 m，氧化升温带42.5～92.5 m，窒息带大于92.5 m。
Abstract

By using the oxygen concentration index method, FLUENT numerical simulation software and on-site layout of bundle tubes, the "three zones" of spontaneous combustion range in the goaf of the 21210 working face of Chensilou Coal Mine are divided. The results show that the range of the "three zones" of spontaneous combustion in the 21210 working face of Chensilou Coal Mine are basically consistent in terms of on-site measurement and numerical simulation. On the air inlet side: the heat dissipation zone is 0-78 m, the oxidation temperature rise zone is 78-129 m, and the suffocation zone is greater than 129 m, on the return air side: the heat dissipation zone is 0-42.5 m, the oxidation temperature rise zone is 42.5-92.5 m, and the suffocation zone is greater than 92.5 m.
关键词

采空区自燃“三带”划分数值模拟氧气浓度
KeyWords

goaf; spontaneous combustion "three zones"; divide; numerical simulation; oxygen concentration
文章目录

1 工作面概况及自燃“三带”划分标准
1.1 工作面概况
1.2 煤自燃“三带”划分理论
2 测点布置及测试结果
2.1 测点布置方式
2.2 测试结果分析
3 数值模拟
3.1 采空区物理模型建立
3.2 模拟参数设置
3.3 模拟结果分析
4 结语
DOI

10.3969/j.issn.1005-2801.2023.07.040
引用格式

冀凯,戴子栋.U型通风采空区自燃“三带”划分研究[J].山东煤炭科技,2023,41(07):123-125.