Pressure of fluids and estimation of integral permeability change within the undermining coal rock massive
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Category: Geology
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Last Updated on 24 September 2014
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Published on 25 December 2012
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Authors: V.V. Lukinov, A.P. Klets, A.V. Prikhodchenko, A.A. Tikhonov.
Influence of mining operations on the change of pressure in undermining coal rock massive have been investigated by application of two methods: first – linear pressure decline from maximal values at the beginning of the affected zone of mine workings to atmospheric, at excavation and second – based on definition of water level in an access borehole. It was set that permeability, in undermining massive increases and can arrive at 300 – 400 10-15 m2.