FIBER-OPTIC SYSTEM FOR CONTROLLING OPEN PIT SIDE ROCK DISPLACEMENT
Mekhtiyev A.D. Yugay V.V. Neshina Y.G. Kaliaskarov N.В. Madi P.
1 January 2024National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2024#2024Issue 4157 - 167 pp.
The article deals with the development of a fiber-optic system for monitoring the displacement of open pit side rocks based on the use of optical-digital intelligent analysis of the optical parameters of fiber-optic sensors. The results are presented in a series of experiments aimed at establishing the pattern of changes in optical parameters under mechanical action on an optical fiber. In the experiments, the optical fiber has been stretched. It has been established that as the mechanical load on the optical fiber increases, there increase additional losses that can be converted into a unit of displacement. Experiments have shown that at different displacement values there is an increase in the number of white pixels that are formed due to mechanical action. The results obtained are explained by the inverse relationship between the amount of displacement and the number of white pixels. The control system performs an intelligent optical-digital analysis and transforms displacements into a pixel pattern. The greater the displacement, the more white pixels there are on the computer screen. Thanks to this technology, it is possible to determine with high accuracy the force of mechanical external impact on an optical fiber, which causes it to stretch, while the magnitude of the impact is directly proportional to the displacement. This principle is used to monitor soil deformations, to detect landslides, to monitor the condition of mines and the other objects where it is important to monitor soil movement. There are proposed a layout of fiber- optic sensors above a growing crack and a data processing unit for monitoring the displacement of rocks on the open pit sides.
displacement , fiber-optic sensor , geotechnical condition , open pit , rock
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S. Seifullin Kаzakh Agrotechnical University, NCJSC, Astana, Kazakhstan
Abylkas Saginov Karaganda Technical University, NCJSC, Karaganda, Kazakhstan
S. Seifullin Kаzakh Agrotechnical University
Abylkas Saginov Karaganda Technical University
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