Retardation of an IGG gas flow along a mine drift due to condensation and temperature decrease

作     者：Rickard Hansen 

作者机构：Sustainable Minerals Institute The University of Queensland 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2019年第29卷第6期

页      面：831-839页

核心收录：

学科分类：08[工学] 0802[工学-机械工程] 

基　　金：The author would like to thank and acknowledge the contribution of Professor David Cliff  SIMTARS and Martin Watkinson for providing support and essential data 

主　　题：GAG Inert gas Condensation Temperature decrease Gas velocity Mine drift 

摘      要：The progress of the GAG gas flow in a conveyor drift is *** output of a calculation model is evaluated and compared with experimental results from full-scale inertisation *** presenting the fastest and most extensive condensation of water resulted in well fitted arrival times of the GAG gas front.A common denominator for the two sets of expressions is that the type of flow is considered and thus better fitted to the actual flow *** model was further refined to include the surface roughness factor in the condensation calculations,which resulted in time lengths even closer to the measured time *** measured rapid temperature increase at certain positions along the conveyor drift was found to fit well with the calculated GAG gas front arrival at the corresponding *** magnitude of the GAG flow was found to have a large impact on the arrival time of the GAG gas *** and understanding the GAG gas behaviour would increase the likelihood of successful inertisation of all or part of a mine.