Method for detecting and locating non-metal pipeline

Abstract

The invention discloses a method for detecting and locating a non-metal pipeline. The method comprises the following steps: a, determining the position base point of the non-metal pipeline; b, installing an ultrasonic transmitter; c, determining the detection position: judging the general direction of the pipeline according to the pipeline section at the base point position in the step a and equidistantly arranging a plurality of detection lines along the pipeline laying direction, wherein the detection lines are perpendicular to the pipeline laying direction and the two ends of the detectionlines are respectively located on both sides of the general direction of the pipeline so as to determine the detection position; d, determining the pipeline position at the detection point; e, determining the section pipeline direction; f, correcting the position; and g, drawing pipeline tracks. The beneficial effects are that the acoustic wave signal is emitted to the fixed position of the non-metal pipeline and then the acoustic wave signal is detected, and the point of the maximum amplitude, the direction of the non-metal pipeline, is selected for connection so as to realize the detection and locating of the position of the non-metal pipeline.

Description

technical field [0001] The invention relates to the technical field of detection of buried pipelines, in particular to a detection and positioning method for non-metallic pipelines. Background technique [0002] The existing buried pipeline detection technology can only detect metal pipelines, but cannot detect the location of non-metallic pipelines. When detecting metal pipelines, use the conductivity of metal pipelines, use the signal transmitter to give an electromagnetic signal to the metal pipeline, use the receiver to detect along the metal pipeline, and detect and locate the metal pipeline according to the strength of the received electromagnetic signal. Therefore, in the prior art, in order to mark the position of the non-metallic pipeline, it is usually necessary to set a metal tracer line above the non-metallic pipeline, so as to determine the position of the pipeline by using electromagnetic technology. However, because the tracer line needs to be buried in the g...

AI Technical Summary

Problems solved by technology

However, because the tracer line needs to be buried in the ground when the pipeline is laid, the cost of pipeline laying is increased, the construction period is increased, and the tracer line is thin, so the tracer effect is difficult to guarantee