辽宁工程技术大学学报（自然科学版）2017，Vol.36Issue(8)：785-789,5.DOI:10.11956/j.issn.1008-0562.2017.08.001
“两进一回”复杂采场采空区注氮防灭火模拟
Simulation on nitrogen injection for fire preventing in goaf of complex stope based on "two intake and one return airway"
摘要
Abstract
To research the nitrogen injection technology on fire preventing and exhausting in goaf and the concentration distribution law of gas and oxygen under the partial W-type ventilation with two inlets and one return roadway,the partial W-type 3D physical stope model is built.The Fluent software is used to simulate the pressure distribution,velocity field and gas drainage under the condition of inhomogeneous continuous porosity.The inerting effect of nitrogen infection under different nitrogen injection volume and different nitrogen injection location is simulated and analysed.The results show that the simulation results of pressure difference,air-leakage law,gas and oxygen concentration are consistent with the field measurement results.With the gas drainage increasing,the max gas concentration decreases and the oxygen concentration range has the decreasing tendency at belt-roadway side while it has the increasing tendency at rail-roadway side in gob.The suitable nitrogen injection volume and the suitable nitrogen injection location are 1140 m3/h and 40m distance to the face respectively.关键词
偏“W”型通风/遗留巷道/瓦斯浓度/体积分数/注氮量/注氮位置Key words
partial W-type ventilation/left roadway/gas concentration/oxygen concentration/nitrogen injection volume/nitrogen injection location分类
矿业与冶金引用本文复制引用
李宗翔,李杰,李林,赵志军..“两进一回”复杂采场采空区注氮防灭火模拟[J].辽宁工程技术大学学报（自然科学版）,2017,36(8):785-789,5.基金项目
国家自然科学基金(51074086,51174109) （51074086,51174109）
