Geometrical instruments – Straight-line light ray type – Process
Patent
1990-07-05
1991-07-30
Cuchlinski, Jr., William A.
Geometrical instruments
Straight-line light ray type
Process
33 1E, 33 1H, 33227, 33275R, 33DIG21, G01C 1502
Patent
active
050350609
ABSTRACT:
A method wherein a light emitting device, such as a laser, is used to precisely measure strike measurements of planar geologic features; for example, bedding planes, fractures, or fold axes. A pre-existing survey line between two spads is first located on a plan view map of the mine. A tape measure is placed between the two located spads in the mine. A laser is then placed on the planar surface to be measured, and the instrument leveled. The laser unit in the instrument is activated and the beam located at its intersection with the tape measure. The location point of the laser unit on the wall of the mine is marked on a mine map, the point on the tape where the beam intersects the tape is marked on a mine map, and a line is drawn between the two points. This line defines the strike of the planar feature relative to the survey line.
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"Laser Instruments for Engineering Construction", Date: 9-67.
Cuchlinski Jr. William A.
Fulton C. W.
Koltos E. Philip
The United States of America as represented by the Secretary of
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