Measurement method and device for downhole triangulated height through front-back simultaneous vision

Abstract

The invention discloses a measurement method and device for downhole triangulated height through front-back simultaneous front and rear visions. A total station is erected below a roadway control point, and a purpose of high precision measurement of height difference between control points is achieved by combining an inverted prism device through a method for observing other controls points through front and rear visions. Different from the traditional triangulated height measurement method, the instrument height and the prism height can be eliminated through a calculation method disclosed bythe invention, an operation of measuring the instrument height and the prism height ais unnecessary in an actual measurement process, and the placement of the prism is free from centering and leveling, the speed of the downhole triangulated height measurement is improved, the influence of the measurement error of the instrument height and the prism height is reduced, and the precision and the efficiency of the downhole triangulated height measurement are improved. The measurement method disclosed by the invention can be used for downhole roadway measurement work, the operation method is simpleand practical, the designed inverted prism device is compact and reasonable in structure, and extensive in practicability.

Description

technical field [0001] The invention relates to an underground roadway measurement technology, in particular to a measurement method and device for an underground front and back vision joint measurement triangular elevation. Background technique [0002] The accuracy of traditional triangular elevation measurement is not high, and it is difficult to meet the needs of high-precision downhole measurement work. The measurement error of the instrument height and prism height is one of the main factors affecting the triangular elevation measurement, especially in the underground roadway measurement where the control point is located at the top of the roadway, the measurement process of the instrument height is more complicated, and it is easy to introduce a larger The high measurement error of the prism reduces the measurement accuracy of the downhole triangular elevation and affects the safety of underground mining work. The present invention is mainly similar to the present in...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of low accuracy of traditional triangular elevation measurement, and it is difficult to meet the needs of high-precision underground measurement work, and provide a method and an inverted prism device suitable for underground roadway measurement. , in order to increase the speed of downhole triangular elevation measurement, reduce the influence of instrument height and prism height measurement errors, and improve the accuracy and efficiency of downhole triangular elevation measurement

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