DOI: 10.11799/ce201801018
Study on water prevention and control technology under the threat of extremely thick igneous rock and ordovician limestone water in coal mine
ZHANG Jian
WU Hong-shen
Abstract：As the 9 coal seam mining is threatened by the extremely thick igneous rock and ordovician limestone water in Guoerzhuang Coal Mine,the water inrush mechanism of coal seam floor is analyzed under extremely thick igneous rock according to the hydrogeological condition;numerical simulation is carried out to study the influence of roof management method and ordovician limestone water pressure to coal floor stress distribution and deformation.The results show that filling mining and forced caving rather than water drainage are of better effect to reduce disturbance and destruction of coal floor under the condition of extremely thick igneous rock roof,and then a water prevention and control technology is proposed using filling or forced caving mining assisted by water drainage;the practice in 2911 working face shows that this scheme can effectively reduce the risk of floor water inrush.
Keywords：extremely thick igneous rockordovician limestone waterfloor water inrushwater prevention and control technologyfilling mining
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 62-65 )