INTEGRATION OF GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS) AND BOREHOLE CAMERA FOR PURPOSE OF MODELING THE BLASTING IN CLAY SOIL
Denis Težak · International Multidisciplinary Scientific GeoConference SGEM ... · 2018
The use of the borehole camera when observing the blasting results in clay soils provides accurate data on the effects. For this purpose, GNSS ; Heavy Duty GeoVision borehole camera, and laser (EDS-C) integration were used. The spherical cavity formed after the detonation of the explosive charge in the bottom of the borehole was measured with the aid of a boreohole camera and a laser system. The measurement data obtained was used to determine the coordinates of the boreholes at a certain depth of recording based on the known E and N coordinates and the height H (GNSS measurement method). A major challenge in the research was to determine the shape and volume of the cavities formed at a certain depth of clay soil after the explosion of the explosive charge which is located in cylindrical borehole with a diameter of at least 131 mm. For a more accurate calculation of the coordinates E, N and H at a certain depth of recording, an application was created that with the calculation of the coordinate of the cavity and its volume gives a detailed graphical interpretation in the 2D and 3D views.