A shaft elevation ruler and its measuring method

Abstract

The invention relates to a roadway height scale and a measuring method thereof. The roadway height scale comprises a quarter round-like fan-shaped body, wherein a small hole is arranged below the fan-shaped body in the vicinity of one side; the small hole is taken as the origin, one right-angle side parallel to the fan-shaped body is taken as the horizontal reference, the other right-angle side is taken as the vertical reference, and equally divided scale lines are arranged on a quarter circular arc with a radius of 0.5m in the horizontal direction; 90-degree circular arc angle lines are arranged on the quarter circular arc with a radius of 0.4m according to the equal angle division principle; equally divided scale lines are arranged between the circular arc angle lines and the edge of the fan-shaped body in the vertical direction; equally divided scale lines are arranged on the vertical side on the back surface of the fan-shaped body in the horizontal direction; a fine line for measurement is penetrated through the small hole taken as the origin; another small hole is arranged at the highest point of the equally divided lines in the horizontal direction, and a perpendicular line for zero adjustment is penetrated through the small hole; and the fine line is matched with the scale lines on the fan-shaped body to form a polar axis coordinate system in horizontal and vertical spaces. The roadway height scale can be widely used in excavation on-site construction of coal mine roadways.

Description

technical field [0001] The invention relates to a measuring device and a measuring method thereof, in particular to a shaft level gauge used in coal mines and a measuring method thereof. Background technique [0002] It is very timely and rigorous to control the azimuth and elevation of the roadway in coal mine tunneling. Errors in the control of roadway elevation will cause errors in construction design, which will bring huge economic losses and safety threats. However, at present, the construction elevation of the mine excavation site is measured with a scale, and there are three defects in the measurement of the roadway elevation with the scale: 1. Three people are required to measure, which is too many and labor-intensive; 2. Multiple segmental measurements are required. , The measurement progress is slow and time-consuming; 3. The measurement accuracy is low, and the error of multiple measurements is large. Due to the many defects in the measurement of the roadway elev...

AI Technical Summary

Problems solved by technology

[0002] It is very timely and rigorous to control the azimuth and elevation of the roadway excavation in coal mines. Errors in the control of roadway elevation will cause errors in construction design, which will bring huge economic losses and safety threats

However, at present, the construction elevation of the mine excavation site is measured with a scale, and there are three defects in the measurement of the roadway elevation with the scale: 1. Three people are required to measure, which is too many and labor-intensive; 2. Multiple segmental measurements are required. , the measurement progress is slow and time-consuming; 3. The measurement accuracy is low, and the error of multiple measurements is large

Due to the many defects in the measurement of the roadway elevation by the scale, it is more difficult to control the roadway elevation head-on in time. Therefore, there are still excavation construction elevations that are not well grasped every year, resulting in mistakes in penetration and other aspects, bringing huge economic losses and safety. threaten

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