The Affection of Ke of Coal Seam on Strata Behavior

Wen Jie Wang; Hong Wei Wang; Zhao Hua Wang; Duo Xu

doi:10.4028/www.scientific.net/AMR.734-737.858

Paper Titles

Study on Pressure Regularity of the Fully Mechanized Coal Mining Face and Evaluation on Support Adaptability
p.838

Study on the Principal of Ground Pressure within the Top Irregularly Damaged Zone in Working Face
p.843

Study on Top Slice Irregular Destroyed Areas of Spatial Exploration Location and Mining Method
p.849

Test Study of Water-Resisting Ability of Coal Seam Floor Rock Mass
p.854

The Affection of Ke of Coal Seam on Strata Behavior
p.858

The Applied Research of Loose Blasting Technique in Managing Crushing Accident of Fully Mechanized Coal Mining Face
p.863

The Beneficiaries under the Current Pricing System of Global Mines
p.868

The Research on the Evaluation and Warning Model of Mining Industries' Security
p.875

The Theory and Practice of Forepoling Pre-Stressed System Bolt in Preventing the Rib Spalling
p.883

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 734-737The Affection of Ke of Coal Seam on Strata...

The Affection of Ke of Coal Seam on Strata Behavior

Abstract:

Coal seam burst tendency is one of the main factors of rockburst. The impact energy index is an important indicator to evaluate bursting liability of coal. The research on the impact of coal seam impact energy index on the mining pressure behavior regularity is important for the rockburst prediction and prevention. This paper used FLAC^3D numerical calculation software to simulate the mining process of seam workface with different Ke and studied the strata behavior regularity with different Ke. Calculations indicated that the vertical stress peak increased in the middle of the seam workface with Ke increasing and the peak position closer to face should implement the anti-impact measures. However, with Ke decrease, vertical stress superimposes at peak stress increases sharply, gradually increasing vertical stress peak distance away from the face and roadway coal wall and the peak position of moves away from face and roadway coal wall. Therefore, the stress in the roadway and face superimposed at the scour protection measures should be implemented.

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Periodical:

Advanced Materials Research (Volumes 734-737)

Pages:

858-862

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.734-737.858

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Online since:

August 2013

Authors:

Wen Jie Wang, Hong Wei Wang, Zhao Hua Wang, Duo Xu

Keywords:

Impact Energy Index (Ke), Numerical Simulation, Strata Behavior

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