Height Survey of Water-conducting Fracture Zone of No.9 Coal Seam
The determination of the height of water-conducting fracture zone is of great significance for water control in coal mines.Considering that there is a large error between the height of the water-conducting fracture zone calculated according to the theoretical formula and the actual situation,it is necessary to measure the height of the water-conducting fracture zone on site.Combined with the actual situation of No.9 coal seam,the survey method and scheme of water-conducting fracture zone were determined,and the implementation of the height survey of water-conducting fracture zone was discussed,which can provide some reference for the survey of water-conducting fracture zone in a coal mine.
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