Underground pipeline position determining method and device and storage medium thereof

Abstract

The invention discloses an underground pipeline position determining method and device and a storage medium. The underground pipeline position determining method comprises the steps of obtaining a one-dimensional horizontal measurement data pair in the horizontal direction, on the ground, perpendicular to the route of an underground pipeline, wherein the horizontal measurement data pair comprisesthe horizontal position and the first re-magnetic field intensity; obtaining a one-directional vertical measurement data pair in the deep-burial direction of the underground pipeline, wherein the vertical measurement data pair comprises the vertical position and the second re-magnetic field intensity; according to the horizontal measurement data and the vertical measurement data, conducting back calculation to obtain the third re-magnetic field intensity of any one position point; according to the third re-magnetic field intensity and the corresponding position point, drawing a contour line ofthe magnetic field intensity on a two-dimensional coordinate system; and according to the contour line, obtaining the theoretical maximum value point position of the contour line, and taking the theoretical maximum value point position as the pipeline center coordinate of the underground pipeline. By means of the method, a pipeline magnetic field contour line profile map can be obtained, and therefore, positioning of an ultra-deep pipeline is achieved.

Description

technical field [0001] The invention relates to the technical field of pipeline detection, in particular to a method, a device and a storage medium for determining the position of an underground pipeline. Background technique [0002] Underground pipelines are important infrastructure in cities, and critical pipelines such as natural gas, oil, and electricity are even more important; if their location information is inaccurate, once they are damaged during construction, construction, and operation, the impact will be huge. [0003] Conventional pipeline detection is carried out on the ground and perpendicular to the direction of the pipeline. By checking the value of the magnetic field component (or magnetic field gradient) on the receiver, the horizontal positioning is carried out by the peak value method (maximum value) or the valley value method (minimum value). Direct reading method and percentage method are used for depth determination. This kind of positioning and dept...

AI Technical Summary

Problems solved by technology

[0004] According to the current level of detection technology, the positioning of ordinary shallow buried pipelines has been basically solved. However, for ultra-deep pipelines greater than 5m, due to the deep buried depth and the interference of conductive anomalies, it is impossible to accurately determine the maximum or maximum value of the magnetic field component using conventional detection. The minimum value makes it impossible to use the peak method or the valley method to locate and determine the depth of the pipeline

Images