Experimental study of rock burst in coal samples under overstress and true-triaxial unloading through passive velocity tomography
Abstract
The influence of overstress state on rockbursts in deep underground coal mining was investigated. Laboratory experiments were conducted using a true-triaxial rockburst system. Passive velocity tomography, using acoustic emission (AE), was used to study the internal microfractures and energy evolution of coal samples during true-triaxial compression. AE activities were monitored using eight sensors and every 130 consecutive AE events were used...
Paper Details
Title
Experimental study of rock burst in coal samples under overstress and true-triaxial unloading through passive velocity tomography
Published Date
Aug 1, 2019
Journal
Volume
117
Pages
388 - 403
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