Calculating the height of water flowing fracture zone in deep mining
Abstract：It is shown that the empirical formula widely used by technical staff to calculate the height of the water flowing fracture zone in underground mines is unreasonable and has limited application. An analysis of the background of this empirical formula shows only mining thick- ness is taken into account. A new theoretical formula appropriate to deep mining conditions where roof rock movement is important was developed. It incorporates mining thickness, depth, face span, the rock mechanical properties and other characteristics, and aquifer water pressure. Using the Baodian coal mine number 1303 face as an example the applicability of the formula is demonstrated.
Keywords：deep miningwater:flowing fracture zonemain controlling factorformula
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 37-41 )