Apply Roof-Broken the Blasting Technique to Control Rock Burst

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Abstract:

In working mining process of No.108 coal seam in Shengli Mine, the lower triangular goaf area hanging arch caused shock pressure. For this, The theoretical analysis do this weaken the roof through the roof-broken blasting technology, to optimize blasting design parameters, combined with the actual situation of the working surface to improve the blasting process, improve the top relief solve risk technology and solve the problem of rock burst. The application shows: successful implementation of advanced deep hole pre-splitting blasting to address a key challenge for charge and blasting technology, effective control of the roof power mutation occurs, improve the safety factor of the mining area, and provides an important mining work under similar conditions.

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1377-1381

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February 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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