Device development and ezperimental study on the methane ezplosion ignited by sparks of cable bolt slippage (breakage)
The first experimental device in the world was designed for studying methane explosion ignited by sparks of cable bolt slippage (breakage), which was designed with the same size as underground and the length of cable bolt can be tested as long as 7.0 m. It can also carry out shock loading and preload of cable bolt which represent underground cable bolt slippage (breakage). The system pressure and impact velocity of the device is adjustable, also can conduct a series of experiments under methane environment. A series of experiments were conducted to study the possibility of spark generation during Ф15.24×6500 mm cable bolt slippage (breakage) and the probability of methane explosion caused by the spark. The results show that, when the exposed length of cable bolt is less than 200 mm, the maximum temperature of the spark generated by cable bolt slippage (breakage) is far less than the required ignition temperature for a methane explosion of 650℃, and the duration of spark is less than 0.12 second, The spark generated by the slippage (breakage) of cable bolt couldnt ignite a methane explosion.
cable bolt slippage (breakage) friction sparks methane ezplosion ezperimental device
Xu Jia-lin Wu Ren-lun Xu Guang Qin Wei
State Key Laboratory of Coal Resources and Mine Safety, CUMT, Xuzhou 221008, China
国际会议
The 6th International Conference on Mining Science & Technology ICMST 2009(第六届国际矿业科学技术大会)
徐州
英文
1-7
2009-10-18（万方平台首次上网日期，不代表论文的发表时间）