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A device is developed for loading granular materials by shearing with air flow driven through the material without its pseudo-liquefaction. Internal stresses and dilatancy of a sample are measured depending on shearing angle. It is shown that shear modulus, characterizing material capability to resist shearing as air flow rate is increased, lowers while dilatancy grows.
In focus are the applied problems of the mechanics of granular media in the context of mining engineering. The author illustrates the relationship of the mechanics of granular media, plasticity theory, rock mechanics, synergetics and other sciences. Trends of the further research effort are indicated.
Dilatancy mechanism of anchorage interface is analyzed by using microscopic model, which shows that failure of anchorage interface is of forms of climbing or gnawing and interface is with obvious dilatancy no matter what the failure form is. Analysis of macro-mechanical effect shows that influence of radial deformation of anchorage interface on chemical properties of anchorage interface is not insignificant...
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