Study on the Collapse Mechanism of the Hard Roof Rocks

Qing Guo Huang; Feng Gao; Jun Zhao

doi:10.4028/www.scientific.net/AMR.524-527.722

Paper Titles

Study on Gradual Deformation and Prediction Model of the Mined Overburden
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Study on Optimal Roadway Bolt Supporting Scheme with Easy-Breaking Roof
p.705

Study on Pressure Sensitive Effect of Permeability of Raw Coal with Containing Gas and Low Permeability
p.709

Study on Technology of Simultaneous Coal Mining and Gas Drainage of Thin Coal Seam in Laoyingyan Mine
p.717

Study on the Collapse Mechanism of the Hard Roof Rocks
p.722

Study on the Effect of Mined-Out Region on Ground Subsidence
p.726

Study on the Flow Numerical Simulation of Jet Ventilation in Multi Tunnel Excavation
p.731

Study on the Integrated Pillarless Coal Production and Methane Extraction Technology
p.735

Study on the Relationship between Hongmiao Mine Gas Emission and Atmospheric Pressure Change on
p.739

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 524-527Study on the Collapse Mechanism of the Hard Roof...

Study on the Collapse Mechanism of the Hard Roof Rocks

Abstract:

The collapse of the hard roof rocks was characterized by its sudden and entire breakage and falling during the mining of the shallow-thick coal seams in Datong district. In this paper, structural mechanics methods was used to study the collapse mechanism of the hard roof rocks. The results showed that when some of the coal pillars lost their load bearing capacity, the pressure of the surronding rocks would be transferred to the left ones which were also to be damaged due to the extra load, and this would cause a domino effect of the adjacent pillars’s failure, and eventually cause the entire collapse of the hard roof rocks.

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Periodical:

Advanced Materials Research (Volumes 524-527)

Pages:

722-725

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.524-527.722

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Online since:

May 2012

Authors:

Qing Guo Huang, Feng Gao, Jun Zhao

Keywords:

Coal Pillars, Collapse, Failure, Hard Roof Rocks

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References

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