Method for detecting depth of underground pipelines

Abstract

The invention relates to a method of for detecting the depth of underground pipelines, which comprises the following steps: (1) connecting a probe with a hydraulic tank as well as a signal acquisition instrument by cables, connecting a rope to the probe; (2) threading a detecting rope in an empty sleeve of a to-be-detected well embedded with pipelines by a threading device; setting a bench mark near an end well on the ground; measuring the elevation of the bench mark by a geometric leveling method; (3) measuring the relative height of the bench mark bya hydraulic sensor and driving the probe to move in the empty sleeve, meanwhile, measuring the heights of the hydraulic sensor in different positions; (4) calculating horizontal shift distance L of a detected point according to the Pythagorean proposition; and (5) summarizing to obtain embedding depths of the pipelines embedded in different distances. The method effectively avoids the interference between to-be-built underground projects and the embedded pipelines, meets building requirement of modernized urban underground projects, and facilitates construction of the urban underground projects.

Description

technical field [0001] The invention belongs to the field of detection, in particular to a method for detecting the depth of underground pipelines. Background technique [0002] With the development of urban construction, many complicated above-ground lines are buried underground by non-excavation methods to provide a beautiful city environment for the public. When adopting non-excavation methods to bury communications, power and other pipelines, the casing method is generally used, and the pipelines are installed in the casing; in order to facilitate future line expansion, more casings need to be pre-buried. At present, due to the rapid urban construction and the intertwined underground pipelines, the buried underground pipelines will inevitably interact with the underground projects to be constructed. Improper operation and construction may damage the buried underground pipelines. Therefore, it is very important to detect the buried underground pipelines. important. [0...

AI Technical Summary

Problems solved by technology

Since the magnetic field detection is affected by many external factors, the vertical position accuracy of the detected underground pipeline is low, and the magnetic field detection can only roughly determine the position. For the area where the pipelines are densely intertwined, the magnetic field detection effect is not ideal.

[0004] Therefore, the current depth position detection of underground pipelines has major defects and cannot meet the needs of modern urban construction.

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