Goaf geological sedimentation three-dimensional fast detection system

Abstract

The invention discloses a goaf geological sedimentation three-dimensional fast detection system. The problem that the traditional detection system is high in precision but small in range, or wide in range but high in cost is solved by adopting three-dimensional detection system based on the combination of a distributed optical fiber strain detection system and an optical fiber grating strain demodulation system. Through a special mounting way, the three-dimensional strain data of the geological sedimentation area can be collected, thereby better knowing the geological sedimentation degree. Thesystem has the following features of being fast in response speed, high in precision and good in instantaneity; the structure is simple, the three-dimensional structure laying is easier for modular manufacturing and capable of measuring the three-dimensional data; the detection range is wide in the premise of guaranteeing the detection precision, and the large-range laying can be realized; the equipment is deeply buried under the ground and cannot be influenced by the weather, the high-precision measurement can be all-weather maintained; the full-course of the measurement is automatic and free from handing on person; the underground three-dimensional data detection is in favor of geological sedimentation modelling; the optical fiber sensor can deal with various severe environments and canbe operated for a long time.

Description

technical field [0001] The invention relates to the technical field of optical fiber strain detection, in particular to a three-dimensional rapid detection system for geological subsidence in a goaf. Background technique [0002] Distributed optical fiber sensing and fiber gratings have been widely used in infrastructure, pipelines, high-speed rail, bridges and other sites where traditional equipment cannot effectively detect and warn. [0003] In the previous geological subsidence detection, it was difficult to achieve accurate localization and rapid detection of the degree of geological subsidence. Using distributed optical fiber sensing and fiber grating technology can effectively solve the above problems, and through a novel three-dimensional layout method, three-dimensional data that is more beneficial to geological subsidence detection can be obtained. Under the premise of rapid positioning and the support of three-dimensional data, the rapid understanding The degree ...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a three-dimensional rapid detection system for goaf geological subsidence, which aims to solve the disadvantages of the existing goaf geological subsidence detection that cannot be quickly and accurately positioned and detected, and solve the problem that the existing technology cannot accurately locate and detect through a special three-dimensional arrangement method. Understand the disadvantages of the geological subsidence area in the goaf, and disclose a three-dimensional layout method combining fiber gratings and optical cables, as well as a technical solution combining distributed detection and point detection

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