There are widespread distributions and seepage of groundwater in rock
fractures. Seepage conditions in the fractures can be affected by stress
conditions. Theoretical model is suggested based on rock fracture
seepage problem in two dimensional space. Combined with the mass
conversion equation, Euler fluid flow equation and rock deformation
equation the functions of seepage pressure have been deduced. The
functions of seepage pressure with the surrounding rock are nonlinear
second order partial differential equations of space-time. It is
analyzed by differential simulation and parameters effects on seepage
are presented. As the elastic modulus of rock increases, the deformation
of surrounding rock becomes smaller, which indicates that the seepage in
soft rock is greatly affected by the deformation of surrounding rock.
The deformation of surrounding rock becomes larger with the increase of
crack analysis length, which indicates that the deformation of
surrounding rock has more effect in long crack seepage than in short
crack seepage. With the increase of the rock width, the effect of the
surrounding rock deformation on the seepage becomes smaller, which
indicates that the shallower the buried depth, the greater the effect.
For the initial crack scale of different scales, the smaller the initial
crack, the more obvious the effect of surrounding rock deformation on
seepage.