Computer modeling of stress concentration zones for estimation of state of geomaterials

Registration of the Emission of Submicron Particles of Rocks to Predict the Destruction of Underground Mine Workings at Rockburst-Hazardous Deposits

“…Under the influence of the load in the hole collar of the blast-hole, tensile (up to 506 MPa) and compressive (up to 37 MPa) stresses arise in the hole of the hole. and horizontal (c) sections A similar picture is also observed under the uniaxial quasi-static loading of a rock specimen [19,20]. Since the values of tensile stresses significantly exceed the ultimate tensile strength for ferruginous quartzite ( p = 15 MPa), disturbances can form at the places where these stresses are concentrated, which can lead to the emission of particles that serve as a precursor of the dynamic destruction of the rock.…”