Double Peaked Stress–Strain Behavior and Progressive Failure Mechanism of Encased Coal Pillars Under Uniaxial Compression
Sign Up to like & getrecommendations! Published in 2020 at "Rock Mechanics and Rock Engineering"
DOI: 10.1007/s00603-020-02101-7
Abstract: To investigate the failure mechanism of reinforced coal pillars and compare their pre- and post-reinforcement bearing capacity, a series of acoustic emission (AE)-monitored uniaxial compression tests were carried out on three types of specimens, namely… read more here.
Keywords: encased coal; coal pillars; coal; failure ... See more keywords
Research on Reasonable Width of Coal Pillars in High Strength Mining Roadway in Wantugou Mine
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DOI: 10.1007/s10706-020-01607-9
Abstract: Reasonable coal pillar size is a necessary condition for high strength and safe mining of coal face with double roadway arrangement. On the basis of the lack of theory of coal pillar retention between alleys… read more here.
Keywords: coal pillar; high strength; roadway; coal pillars ... See more keywords
Stability and control of room mining coal pillars—taking room mining coal pillars of solid backfill recovery as an example
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Central South University"
DOI: 10.1007/s11771-017-3515-8
Abstract: The stability of room mining coal pillars during their secondary mining for recovering coal was analyzed. An analysis was performed for the damage and instability mechanism of coal pillars recovered by the caving mining method.… read more here.
Keywords: mining coal; coal; room mining; coal pillars ... See more keywords
Experimental study on excavating strip coal pillars using caving zone backfill technology
Sign Up to like & getrecommendations! Published in 2018 at "Arabian Journal of Geosciences"
DOI: 10.1007/s12517-018-3914-7
Abstract: Strip mining was the major method to control surface subsidence when mining under buildings in China; however, its coal recovery ratio was only 30 to 50%, resulting in a large amount of coal resource waste… read more here.
Keywords: backfill; strip coal; excavating strip; coal pillars ... See more keywords