METHOD OF DETERMINING STRESS-STRAIN STATE OF ROCK MASS Russian patent published in 2025 - IPC G01B11/16 

FIELD: measuring.

SUBSTANCE: invention relates to underground, open and construction geotechnologies and can be used to determine the stress-strain state (SSS) of a rock mass. Method consists in applying reference points inside and outside the contour of the annular unloading slot, following the contour of the mine working, on the surface of the investigated rock massif, then driving of annular unloading slot, measurement of radial and tangential displacements of reference points, determining functional dependencies of radial and tangential displacements of reference points from the contour coordinate of the annular unloading slot and based on them by solving 2nd boundary value problem of the theory of elasticity, determining the SSS in the place of core formation, as well as displacements of reference points on the inner and outer boundaries of the contour of the annular unloading slot, displacements of the boundary of the considered mine working are determined from them, and after solving the Cauchy problem, the stress-strain state of the entire massif of rocks, including the contour of the mine working, is determined. First, a plate with shafts is rigidly attached to the face surface by means of anchors, along which the traverse with the drill and the platform with a camera can freely move in a direction perpendicular to the face surface, wherein first, using the cutter installed on the drill, the face surface is levelled, then using the template in the positions given relative to the intended annular unloading slot, holes are inserted into which reference rods with marks on their ends protruding above the face surface are pressed, further, a platform with a camera is installed and the face surface with reference rods is photographed, then a traverse with a drill is installed and an annular unloading slot is passed, and then the platform with the camera is installed again and the face surface with reference rods is re-recorded, and the obtained digital photographs are used to determine the shift of coordinates of the ends of the reference rods with marks.

EFFECT: increased efficiency of determination of stress-strain state in core and whole massif of rocks.

1 cl, 4 dwg