董家河煤矿大采深条件下底板破坏深度的实测与模拟分析

doi:10.11799/ce201404032

COAL ENGINEERING ›› 2014, Vol. 46 ›› Issue (4): 93-95.doi: 10.11799/ce201404032

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In-situ Measurement and Simulation Study on Failure Depth of Dongjiahe Coal Mine at Big Mining Depth

Received:2012-11-12 Revised:2013-03-27 Online:2014-04-11 Published:2014-04-10

Abstract

Abstract:

Floor water gushing-out is one of the most serious national casualty in coal mine. Based on the analysis of engineering geological conditions of Dongjiahe Coal Mine, floor failure depth of 22507 working face of NO. 5 coal seam was measured by appling drilling sonic method. At the same time, the failure effect of 22507 working face was simulated by using finite difference program of FLAC3D. Finally, the simulated results were compared with in-situ measurement results, and the anastomotic degree is well. It provides a reference for determing floor failure depth of total Dongjiahe Coal Mine and similar Mine..

Key words: failure depth of floor, big mining depth, in-situ measurement, numerical simulation

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URL: http://www.coale.com.cn/EN/10.11799/ce201404032

http://www.coale.com.cn/EN/Y2014/V46/I4/93

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In-situ Measurement and Simulation Study on Failure Depth of Dongjiahe Coal Mine at Big Mining Depth

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