Theoretical investigation on the relationship between tail roadway methane drainage and distribution of easily spontaneous combustible region in gob
In order to understand the influence of tail methane drainage pattern on easily spontaneous combustible region in gob, a theoretical qualitative analysis was performed in regards to the spontaneous combustion hazards resulting from drainage position and pressure. Subsequently, the software FLUENT was employed to quantitatively investigate the theoretical solutions by solving the mathematic model established with mass, momentum, component and energy conservation equations. The calculation results demonstrate that methane drainage from alternate exterior roadway to gob can increase the range of easily spontaneous combustible region dramatically; the oxidation zone width increases with increasing drainage pressure, especially near the drainage hole. The rate of temperature rise can accelerate obviously and high temperature region moves back towards the depth of gob. The conclusions summarize the negative influence of methane drainage on fire protection in gob and present a method of determining drainage parameters dedicated to prevent spontaneous combustion.
tail methane drainage pattern easily spontaneous combustible region FLUENT drainage pressure temperature rise.
Zhu Hongqing Liu Xingkui
Faculty of Resource and Safety Engineering, China University of Mining & Technology (Beijing), Beijing 100083,China State Key Lab of Coal Resources and Safe Mining, China University of Mining & Technology(Beijing), Beijing 100083, China
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
516-524
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）