英国物理学会
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作者:Dazhao Song , Enyuan Wang ...
来源:[J].Journal of Geophysics and Engineering, 2018, Vol.15 (4)IOP
摘要:This paper presents an electromagnetic radiation-based method to qualitatively assess mine-induced stress field at the longwall face. We first analyze the correlation between electromagnetic (EM) signals and stress, and then measure the signals and drilling bits in both the strik...
作者:Dazhao Song , Zhentang Liu ...
来源:[J].Journal of Geophysics and Engineering, 2017, Vol.14 (4)IOP
摘要:In order to quantitatively study the relationship between the disturbance stress of coal mine roadways and the electromagnetic radiation (EMR) of rocks, and further evaluate their internal stress distributions, we first examined the characteristics of EMR signals emitted fro...
作者:Dazhao Song , Enyuan Wang ...
来源:[J].Journal of Geophysics and Engineering, 2017, Vol.14 (6)IOP
摘要:An accurate and non-destructive evaluation method for the hydraulic measure impact range in coal seams is urgently needed. Aiming at the application demands, a theoretical study and field test are presented using the direct current (DC) method to evaluate the impact range of coal...
作者:Dazhao Song , Liming Qiu
来源:[J].Journal of Geophysics and Engineering, 2018, Vol.15 (3)IOP
摘要:Hydraulic flushing in gas predrainage is widely used, but the hydraulic-flushing effect is evaluated in a traditional way, by determining the desorption volume, moisture content, gas drainage rate and other conventional indices. To verify the rationality and feasibility of the mu...

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