Yield Pillar Simulation Using Physical Modeling.
Proc 27th Us Symp on Rock Mechanics Tuscaloosa, Alabama, 1986 Jun; :8 pages
As the use of longwall mining increases in the United States, there is a need to better understand the stress redistributions indicative of this method. To control high stress concentrations, the yield pillar concept has been developed. A physical longwall mine model has been designed to study the effect of yield pillars in deep mining. The model includes sensitive stress measuring devices, a new excavating technique, and a new model material. This study includes the use of both regular and yield pillar systems and has successfully simulated the mode of stress change in chain pillars.
Proc. 27th Us Symp. on Rock Mechanics, Tuscaloosa, Alabama, June, 1986, Soc. Min. Eng. AIME, PP.224-231