Method of advanced detection of breaking-loss wing coal seam of coal road based on single offset pair observation system

Abstract

The invention relates to a method of advanced detection of a breaking-loss wing coal seam of a coal road based on a single offset pair observation system. The method comprises the following steps: arranging a shot point on a coal road head-on base board position and exciting an earthquake wave, determining a diffracted wave wave train of the breaking-loss wing coal seam breakpoint, selecting one period of diffracted waves with the maximum amplitude value in the diffracted wave wave train and calculating a main-polarization direction of the diffracted waves, drawing a radial on the condition that a demodulator probe is used as an endpoint and an anticlockwise inclined angle between the radial and a horizontal line of the demodulator probe is beta, finding out time corresponding to the maximum amplitude value in the period length diffracted waves, drawing an arc on the condition that the demodulator probe is the circle center and is the diameter, calculating an intersection point of the radial and the arc, wherein the intersection point is the position of the breaking-loss wing coal seam breakpoint. The method can carry out advanced forecasting through two dynamics feature information of the main-polarization direction of the diffracted waves of the breaking-loss wing coal seam breakpoint and the amplitude, detection is accurate and easy to operate, the blank that a geophysical method is utilized to detect the breaking-loss wing coal seam in a mine is filled, and convenience is brought to mine construction.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to view more

AI Technical Summary

Benefits of technology

This patented technology allows for better early warning on potential mineral resources during excavation operations by utilizing both static characteristics (the orientation) from the break point or other features within the coal deposit itself. It achieves this through various techniques such as acoustic emission tomography scans, magnetic resonance imaging, X ray fluorescence analysis, etc., which are less expensive than traditional drilling approaches while still providing precise data about the location where there may be any significant deviations between different layers.

Problems solved by technology

The technical problem addressed in this patents relates to finding missing or damaged parts (focal) within an area where no valid roads exist for mining purposes without having access to accurate location data. Existing techniques like electric magnetic soundings have limitations that make their effectiveness limited when trying to locate areas containing buried materials. Seismics provides another option - they work well even if some obstacles were hidden behind them. However, current methods require expensive equipment and time-consuming operations, making it difficult to quickly find any holes near potential hazards.

Images