Deformation and failure mechanisms of the
entry driven oppositely to adjacent working face
There are two main aspects on the deformation and
failure mechanisms of the entry driven oppositely to
adjacent working face:
(1) The entry experiences the superposed effects of
excavation and mining, and the abutment pressures
from adjacent and current working faces, which will
last for a long period of time.
(2) The strengths of coal seam are relatively low,
and the joints and fractures of surrounding rocks are
fully developed in some regions. The surrounding
rocks cannot bear the intense mining-induced stresses,
and thus serious deformation and failure will happen.
entry is not significant. After they cross each other, however, the lateral abutment pressure will have an evident impact on the
entry. The displacement rate of the entry will be greatly increased and reaches a certain value within a certain distance
between the heading face and the working face. Then, it will increase again with the presence of secondary mining-induced
pressure on the entry when the present working face advances. The fully-grouted cable with short length, high strength and
Deformation and failure mechanisms of the
entry driven oppositely to adjacent working face