COAL ENGINEERING ›› 2013, Vol. 45 ›› Issue (9): 25-27.doi: 10.11799/ce201309010
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In order to solve the way how to determine security coping thickness and blasting design. The paper pointed out that the security coping thickness is accumulation of falling height. Theoretical calculation of thickness is calculated by material mechanics method. The paper also give blasting design according to the characteristics of surface mine goaf.
Key words: surface mine, goafs, security coping thickness, blasting design
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URL: http://www.coale.com.cn/EN/10.11799/ce201309010
http://www.coale.com.cn/EN/Y2013/V45/I9/25
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