DOI: 10.11799/ce202311041
Underground drilling and draining depressurization of roof water in Yushen mining area
WANG Yongping
ZHANG Mingrui
YUAN Xiangrong
Abstract：Jinjie Coal Mine is a mine with extremely complex hydrogeological conditions,the roof sandstone fissure water and quaternary loose rock diving are the main source of water gushing in the mine.The coal seam is shallow,the overlying aquifer is close to the coal seam,and the height of the fissure zone formed by coal mining activities is higher than the thickness of the aquifer.The water gushing channel in the fissure zone formed by coal mining activities is directly connected with the aquifer,which creates good conditions for the aquifer water to enter the coal face.Taking the coal face at mine field boundary of Jinjie Coal Mine as the research object,fluid-solid coupling simulation software FLAC3D was used to simulate and calculate the seepage law of pore fissure water and the change law of pore water pressure field in the process of draining and depressurizing in the skylight area and the normal water-barrier area(normal area)under two different geological conditions.The results show that the drainage and depressurization process changes the groundwater seepage field in the skylight area and the normal water-insulating layer(normal area),and plays a role in the drainage and depressurization.Different from the normal area,the skylight area has a fast flow rate and obvious drainage effect.
Keywords：Yushen mining areadraining depressurizationroof waterfluid-solid coupling
Publication Date：2023-12-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 54-59 )