Abstract
This paper presents results which concern regularities of propagation of discontinuous zones from mined-out space in rock massif with inclined bedding structure. The dependencies of maximal height of these zones from the inclination angle of productive beds were found. The mechanical model of rock massif was chosen as viscoelastic and transversely isotropic. Finite element method was used for calculation performing. Coulumb-Mohr and maximal elongation criteria were used for determination of discontinuous zones.
Highlights
For predicting the deformation processes in the rock’s massif it is important to develop rock’s massif models that adequately describe its state and behavior depending on the ultimate objectives of the study
The influence of the slope angle of productive beds on the height of possible man-caused fractured zones due to the mining of a single longwall is assessed in the present work
Graphs the horizontal and principal strains at the slope angles of 0 and 10 degree are shown in Figures 4 and 5
Summary
For predicting the deformation processes in the rock’s massif it is important to develop rock’s massif models that adequately describe its state and behavior depending on the ultimate objectives of the study When this is to be done, it is very difficult to allow for the time-varying behavior of the stress-strain state in the massif because of a great variety of influencing factors. We did not meet the works dealing with the definition, for example, the extent of these zones from the mining as a function of the slope angle of potash and salt beds This task is very important in predicting a required depth of water-protective strata on salt and potash deposits and in making recommendations on the protection of mines from flooding. The influence of the slope angle of productive beds on the height (extent) of possible man-caused fractured zones due to the mining of a single longwall is assessed in the present work
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