Indirect distance measuring as applied upon both connecting surveys and orientation one

Abstract

As per Regulation of the Czech Mining Office Board No. 435/1992 of Law Digest, in wording of later rulings, there is a duty to survey any and all mining workings in the state reference system of S-JTSK type. Tasks for both connecting and orientation surveys on the Earth’s surface are to identify the end point position for the plummet segment and especially to identify their bearing. Connecting the horizon in the mine plays a role in transferring the coordinate values from said plummet segment to the points ensuring the basic orientation line of the connected mine working. Distance measurement is done by means of survey compared tape. Time demand and difficultness in organizing the works represent a disadvantage of this standard solution. Connecting and Orientation measuring might be executed such a way, that end point coordinates for plummeted segment both on the surface and underground ones are identified thru the total station using the surveying omnidirectional prism inserted coaxially above said plumb lob. Then, distances are not measured using the survey tape, but by means of electronic optical distance meters.