Stress-strain State Of Rock Mass Research Articles

Influence of oil recovery on the change in the stress-strain state of rock mass. Part II. Results of numerical modeling

The displacements of rocks and the Earth's surface in the development of oil fields in the north of Perm region are considered in numerical calculations by the finite-element method, using a model of oil reservoir deformation under load. The conditions in which considerable surface subsidences appear are determined. Some features of rock mass displacement in the presence of tectonic disturbances are stated.

Modeling of initial stresses and weakening surfaces by finite-element method

Solutions of geomechanical problems in terms of full and additional displacements are compared for the example of the creation of the mined-out space filled with stowing and the construction of a subway tunnel. An approach to modeling the contact interaction of a block massif is proposed. Data on the stress-strain state of rock mass in forming the mined-out spaces close to extended geological disturbances are presented.

Method of calculating stress-strain state of rock mass with allowance for contact between roof and floor of mined-out space

Method of calculating stress-strain state of rock mass with allowance for contact between roof and floor of mined-out space

Stress-strain state of rock mass in mining the Internatsional'naya diamond bed

Stress-strain state of rock mass in mining the Internatsional'naya diamond bed

Solution of the spatial problem of creep for a preparatory working

In order to establish the effect of face advance rate on the rock mass stress-strain state, it is necessary to consider the spatial problem of creep theory in coal mining. The authors consider an isotropic uniform viscoelastic rock mass with a working of square cross section. The physical equation of state for a viscoelastic rock mass is presented in the form of a Boltzmann-Voltaire integral equation. Figures show the design diagram, the change in creep strain ahead of the face and in the roof, dependence of creep strain ahead of the face and in the roof on sandstone, argillite, and coal, and the dependence of creep strains on the rheological properties of rocks at different rates. It was shown that an increase in the rate of energy accumulation over the rate of its dissipation indicates that for some section of time in the rock mass energy accumulates more than it is released. The ratio between rates of dissipation and accumulation will govern the nature of rock failure; the less this ratio, the greater will be the dynamic form of the failure process.