DOI: 10.11799/ce201611013
Feasibility study of dewatering and depressurizing of high pressure roof water
LIU Ji
Abstract：In order to eliminate the threat of high pressure water in sandstone on the seam roof, the feasibility of the dewatering and depressurizing was determined according to a large underground dewatering test before mining work and observing the water drawdown under different water discharge. The results showed that the total water discharge decreased from 223?2m3/h( Y37-3) to 20~30m3/h and the water pressure from 5MPa to 0?38MPa after dewatering. The decline is obvious, and the dewatering and depressurizing was feasible.
Keywords：roofsandstonehigh pressure waterdewatering testdewatering and depressurizing
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 42-45 )