@Article{cmes.2021.011556,
AUTHOR = {Zhibin Lin, Boyang Zhang, Jiaqi Guo},
TITLE = {Analysis of a Water-Inrush Disaster Caused by Coal Seam Subsidence Karst Collapse Column under the Action of Multi-Field Coupling in Taoyuan Coal Mine},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {126},
YEAR = {2021},
NUMBER = {1},
PAGES = {311--330},
URL = {http://www.techscience.com/CMES/v126n1/40861},
ISSN = {1526-1506},
ABSTRACT = {Minin-induced water inrush from a confined aquifer due to subsided floor karst collapse column (SKCC) is a type of serious disaster in the
underground coal extraction. Karst collapse column (KCC) developed in a
confined aquifer occurs widely throughout northern China. A water inrush
disaster from SKCC occurred in Taoyuan coal mine on February 3, 2013. In
order to analyze the effect of the KCC influence zone’s (KCCIZ) width and
the entry driving distance of the water inrush through the fractured channels
of the SKCC, the stress, seepage, and impact dynamics coupling equations
were used to model the seepage rule, and a numerical FLAC3D model was
created to determine the plastic zones, the vertical displacement development
of the rock mass surrounding the entry driving working face (EDWF), and
the seepage vector and water inflow development of the seepage field. The
hysteretic mechanism of water inrush due to SKCC in Taoyuan coal mine
was investigated. The results indicate that a water inrush disaster will occur
when the width of the KCCIZ exceeds 16 m under a driving, which leads to
the aquifer connecting with the fractured zones of the entry floor. Hysteretic
water inrush disasters are related to the stress release rate of the surrounding
rocks under the entry driving. When the entry driving exceeds about 10 m
from the water inrush point, the stress release rate reaches about 100%, and a
water inrush disaster occurs.},
DOI = {10.32604/cmes.2021.011556}
}