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23Rd International Conference on Ground Control in Mining : Numerical Modeling for Increased Understanding of the Behavior and Performance of Coal Mine Stoppings

By Burke, Lisa M.

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Book Id: WPLBN0000076126
Format Type: PDF eBook
File Size: 0.2 MB
Reproduction Date: 2005
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Title: 23Rd International Conference on Ground Control in Mining : Numerical Modeling for Increased Understanding of the Behavior and Performance of Coal Mine Stoppings  
Author: Burke, Lisa M.
Volume:
Language: English
Subject: Health., Medical research, Medical reports
Collections: Medical Library Collection
Historic
Publication Date:
Publisher: Centers for Disease Control and Prevention

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Burke, L. M. (n.d.). 23Rd International Conference on Ground Control in Mining : Numerical Modeling for Increased Understanding of the Behavior and Performance of Coal Mine Stoppings. Retrieved from http://hawaiilibrary.net/


Excerpt
In underground coal mines, concrete block stoppings are widely used to control mine ventilation. Although stoppings are not intended as roof support, they are subjected to roof to floor convergence, and may fail as a result of this loading. Premature failure of stoppings can significantly affect mine ventilation, limiting the amount of fresh air reaching the working faces and increasing the risk for methane explosions. Softening materials are often used in stoppings to reduce the damaging effects of roof to floor convergence. However, to date, research has not focused on the behavior of stopping construction materials subjected to roof or floor loading, leaving the design process to trial and error.

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