FIELD: mining.
SUBSTANCE: invention relates to mining and is intended for determination of spatial position of blast holes. In simulator of visual measurement of spatial position of drilled ascending bore pits containing base with goniometric scale arranged on it in the form of two-coordinate grid and compass, ball hinged to base, equipped with bar arranged along direction of blast hole with limiter, a coupling put on the upper part of the rod with the possibility of rotation around the rod, a cylindrical level connected to the coupling perpendicular to its longitudinal axis, a plumb fixed to the coupling along its diametrical axis perpendicular to the longitudinal axis of the cylindrical level, and equipped with a light point device, in addition, all elements of the device, except the magnetic needle of the compass, are made from non-magnetic material, the device is additionally equipped with a rod, connected from below by means of a connector coaxially with the rod, and from above by means of a hinge with a surface imitating the plane of the face, note here that axis of compass 0°–180° is oriented parallel to abscissa axis of goniometric scale, with location of mark 0° in direction of mine survey, coupling is made in form of tube, limiter is located directly under coupling, and base of device is equipped with centering weight.
EFFECT: use of said device enables to determine numerical values of inclination angles of ascending blast holes with high accuracy.
1 cl, 4 dwg
