2023
DOI: 10.3389/fevo.2023.1291359
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Research on the coupled support technology of a composite rock beam-retained roadway roof under close coal seams

Tingchun Li,
Liu Yang,
Qingwen Zhu
et al.

Abstract: IntroductionThe technology of gob-side entry retaining without coal pillars in close (distance) coal seams is still immature, and the roof control and support technology in this case is not perfect.MethodsIn this paper, the coupled support technology of a composite rock beam roof under close coal seams is systematically studied by using theoretical analysis, numerical simulation and field test.ResultsBoth the floor slip calculation results and numerical simulations indicate that the vertical failure depth in t… Show more

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