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| Steeply inclined coal seam Z type ventilation roadway in horizontally stratified roof caving mining method overlying the motion law of the research |
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Received:April 01, 2013
Revised:May 06, 2013
Accepted:April 09, 2013
Published Online:January 28, 2014
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| DOI： |
| KeyWord:Steeply inclined coal mining method ;horizontally stratified;Numerical Simulation;RFPA2D |
| Author | Institution |
| baixingming |
College of Resource |
| sunguangyi |
College of Resource |
| dongchangji |
College of Resource |
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| Abstract: |
| Steeply inclined coal seam Z type ventilation roadway in horizontally stratified roof caving mining method is according to the thickness of 5 ~ 8 m steep coal seam mining new effective method. But to the method of overlying rock law research also correspondingly deficient, this article through the theoretical analysis and RFPA2D numerical simulation analysis, the conclusion is drawn that this method in mining process tilt direction on the upper strata movement quite severe, scope than lower big and easy form hinged structure, and then by means of the horizontal slice full-mechanized caving mining face force in stratified top-coal section place projection for a little not produce declining force of roof strata movement law to carry on the analysis, in the working face support selection and supporting theory to provide the theory basis, and the methods to improve and promote lay a solid foundation. |
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