Abstract:

When the roof water-conducting fissure zone develops to the water body，the water body en⁃

ters the working face along the fissure，which seriously destroys the ecological environment of the mine and

affects the work safety and efficiency. Taking the 150105 working face of 15# coal seam in Panchengling Coal

Mine as the research object，the development height of the water-conducting fracture zone of 15# coal seam

is analyzed by empirical calculation formula，and the development height of the water-conducting fracture

zone of 15# coal seam is determined comprehensively by combining upward hole water injection leak detec⁃

tion method and borehole television imaging method. The results show that the maximum development height

of the water-conducting fracture zone is predicted to be 81.56 m by the empirical calculation formula，79.99

m by the upward hole water injection leak detection method，and 79.46 m by the borehole television imaging

method. Finally，the height calculated by the empirical formula is highly consistent with the field measured

results，which can provide guidance for water damage prevention and safety production of 15# coal seam in

Panchengling Coal Mine.

Key words:

water conducting fracture zone, upward hole water injection leak detection method, bore?

hole television imaging method, water damage prevention