A Study on the High-Water Solidifying Materials for Gob-Along Roadside instead of Coal Pillars

Sun H, ; Yin J,
Organization: The Australasian Institute of Mining and Metallurgy
Pages: 13
Publication Date: Jan 1, 1992
A new technology has been introduced - the use of the High-Water Solidifying Material for providing pumped roadside supports to maintain a roadway for re-use in longwall retreating. As a gob edge support, its initial use at Hebi No. 1 Colliery was successful, providing acceptable performances in support and control of convergences and lateral closures of the gob-edge roadways. This acceptability applied to both first use and re-use when the roadway became a gateroad for the adjoining longwall, remaining stable throughout the associated loadings and convergences. The technology promises economic and social benefits.
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