The
Numerical Simulation of
a
Coal Mining
Based on the 3D
Geologic Model
Zhang Mei1
Meng Da2
1.Agricultural
University of Hebei, College of Urban and Rural Construction, 071000 China,
Hebei Baoding
2.China
Academy of Building Research , 100190 Beijing, China
Abstract:
According to
the geological
drilling data of a mine area,
established the 3D geological
model of the mine
area. Drawn
the sectional view
from the model and
compared with the actual
mining exploration line
sectional view, verify the
reliability of the model. Based on
the multi-layer
DEM 3D geological
model, proceed
simulation in the excavation of
the tunnel using the method of
advanced excavation. Got the
initial
gravity field, the calculate results of deferent work layer
advance distance. The results showed: When the
work layer advanced
200-975m, fault had no effect on mining. When
advanced to 990m (from
the fault
F3 25m), the damage
area caused by the mining
has been through to the
fault, if
the working layer keep advance
to the fault, it’s highly
probable to happen roof
fall, sudden water
accidents. It can be inferred, to
NO.9
coalbed first
mining face, it should
reserve
25 ~ 10m
coal pillars at the
F3 fault
to prevent
accidents.
Keywords: 3D geological model; fault; coal mining; numerical simulation
International Journal of Ground Sediment & Water