DOI: 10.11799/ce201709005
Study on advance grouting in coal floor with ground directional horizontal hole for water hazard control
LI Chang-qing
AN Xu-liang
SUN Xiao-yu
Abstract：The water inrush risk was assessed for L8 limestone in Ⅱ1 coal seam floor during roadway driving and coal mining, based on the geology and hydrogeology conditions of Zhaogu No. 1 Coal Mine. Advance grouting was proposed for the water inrush from coal seam floor. The underground coal seam floor advance grouting and water prevention -control technology were summarized according to the previous construction experience. At the same time, the ground advance grouting technology with horizontal directional hole was introduced, combing with the development of new technology. At last, the two kinds of grouting and water prevention control technologies were compared and analyzed, the advantages and disadvantages and applicable conditions were described. The results show that, the ground advance grouting technology with directional horizontal hole is suitable for water prevention and control of coal seam floor, which has achieved good results already.
Keywords：ground directional horizontal holecoal seam flooraquiferadvance groutingwater prevention and control
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 19-22 )