The Technology Research About Hidden Danger Identification of Tunnel Roof Fall
2011; Elsevier BV; Volume: 26; Linguagem: Inglês
10.1016/j.proeng.2011.11.2294
ISSN1877-7058
AutoresHongtao Liu, Nianjie Ma, Gong Pei-nuan, Zhang Canglong, Hua Zhao,
Tópico(s)Geomechanics and Mining Engineering
ResumoIn underground coal mines, the tunnel surrounding rock conditions changed greatly, roof litho logy even happened thinning and disappearing within the range of tens of meters, so that roof stability changed. In order to guarantee the safety of tunnel, we often design more conservative support parameters, that will create the question that many periods of tunnel support excessively and the question that some periods of tunnel support insufficiently due to the failure to discover hidden danger of roof fall in time. On the basis of field application and according to the theory research, divide the roof caving hidden danger of roof area by roof structure detection instrumentation, to find a area which influencing mine production safety and to vital design and monitoring this area, this can effectively prevent roadway roof caving accidents. The field observation results show that the division hidden danger of roof caving method of based on the roof structure detection and peek into the roof have a higher similar rate with underground roof strata conditions, and have a great significance to the coal mine safety production.
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