Study on the Regulation of Water Hazards and Prevention Work in Yima Coalfield
LI Song-ying
MA Zi-qiang
ZHANG Xu-le
REN Meng-li
Abstract：In order to get the regulation of water hazards and to supply for the future water prevention work in Yima Coalfield , the historic data , geological structure , the distribution of small coal mines , the river region , the main aquifer and aquifuge, mining thickness and the fissures have been analyzed systematically.With small coal mines closure ,treatment of fissures and channels , and the deeper mining activities , the main water hazards have changed from precipitation , surface water and kiln water into roof flood.The threat of the roof water mainly happened on the core of syncline with 700 m deep and also happened on the edge of fault and the rich abundance region.Roof water inrush has close relationship with mining thickness and periodic mine pres-sure.For roof water hazard ,“three maps-two predictions” was proposed and applied in evaluation and pre-diction of water inrush source , channel and intensity.With geophysical prospecting , the suspected water rich area has been obtained and then the drainage work could be done before mining.Besides, other water preven-tion work which can improve the drainage capacity of the working face also should be carried out .
Keywords：water hazards in coalmineroof waterglutenite aquifersynclinesurface waterkiln water
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 58-63 )