2008•Coal Mining TechnologyRequires access

Movement Analysis of Top-coal and Roof of Full-mechanized Caving Mining Face under Combined Hard Roof

LI Gui-sheng

Abstract

Movement rules of top-coal and roof in full-mechanized caving mining face under combined hard roof in Xinyang Colliery are researched by in-situ observation.Results show that top-coal and immediate roof of 9# Coal can cave in time even if hard roof and dirt band are not disposed of,which is benefit for top-coal recovery.

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Key concepts: Roof, Coal, Mining engineering, Coal mining, Dirt, Cave, Engineering, Geology