An Analysis of Factors Affecting Water-Inrush from the Number 4 Coal-Seam Roof Conglomerate in the Huafeng Coal Mine
SHI Long-qing
YU Xiao-ge
WEI Jiu-Chuan
GUO Jian-Bin
ZHAI Pei-be
LI Jing-fa
LI Gong-qiang
Abstract：An analysis based on rock pressure control theory and the distribution and hydro-geo-logical characteristics of the conglomerate above the Huafeng Coal Mine number 1409 working face suggests the fracture zone allowing water inflow is 96.2 m thick while mining the coal lay-er itself is 6.5 m thick.This fracture zone can lead to water-inrush through the roof.The un-derground pressure data and roof water-inrush data are correlated.Monitoring the number 2407 working face for rockburst suggests a role for rockburst in promoting water-inrush.A drift model of water migration along the working face below a roadway is described."Zebra fractures"provide the main passage way for water where large amounts of water-inrush occur through the roof.
Keywords：roof conglomeratewater-inrush mechanismunderground pressurerockburstzebra crossing fracture
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 26-31,44 )