Optical Fiber Technology to Monitor Slope Movement

2014-09-19
Recently, awareness about hazards caused by landslides and the importance given to the concept of risk management has been continuously increasing. As a consequence, early warning systems have gained much more importance in terms of risk management. Different instrumentation techniques such as inclinometers, tilt meters, extensometers and ground based LIDAR systems have been used to monitor landslides and/or slopes. All these techniques have their own advantages and disadvantages, but the optical fiber system has certain superiority over these methods. Fiber optic based technology serves an incessant process to acquire the data during the monitoring operation, a significant need for such operations and early warning systems. The main objective of this study is to monitor slope movement regardless of lithology and failure types. Equipment utilized in an attempt to accomplish this scope has consisted of a laboratory experimental set-up and an optical fiber system containing Optical Time Domain Reflectometer (OTDR), optical fiber cables and heterocore sensors. A laboratory set-up was constructed to simulate landslide phenomenon and to record movement. The laboratory experiment set-up contains two identical trays filled with soil that posesses an inclination mechanism to represent ideal landslide conditions. The tests show that fiber optical technology can be utilized as a landslide monitoring tool and is useful in determining mass movement throughout a fiber array. These studies are expected to lead risk assessment studies in hazard prone regions and also at the construction and post-construction period of all other displacement dependent engineering projects such as open road cuts.

Suggestions

Slope movement monitoring with optical fiber technology
Arslan Kelam, Arzu; Akgün, Haluk; Kelam, Mehmet Abdullah (2015-01-01)
Recently, early warning systems have gained much more importance in terms of risk management since awareness regarding landslide hazards has increased dramatically. Different instrumentation techniques have used to monitor mass movements. Although all techniques have their own advantages and disadvantages, optical fiber system has certain superiority over others with an incessant data acquisition capability. The main objective of this study is to monitor slope movement regardless of lithology and failure ty...
Empirical analysis of the relationship between electricity demand and economic uncertainty
Akarsu, Gülsüm; Gaygısız Lajunen, Esma; Department of Electrical and Electronics Engineering (2013)
The determination of the factors that influence electricity demand and the estimation of price and income elasticities are very crucial for both effective policies and consistent demand projections. The purposes of this dissertation are to investigate the determinants of electricity demand, to obtain the price and income elasticities, and to examine the effect of economic uncertainty/volatility on the electricity demand. We model electricity demand as a function of electricity price, income, urbanization ra...
Empirical comparison of portfolio risk diversification algorithms
Yerli, Çiğdem; Kestel, Sevtap Ayşe; Schindler, Nilüfer; Department of Financial Mathematics (2018)
The enhanced correlations during global financial crisis has revealed that simple asset allocation portfolios prove to be not well-diversified across different risk factors, which makes the risk based asset allocation strategies popular. However, the strategies still construct the risk concentrated portfolios due to the correlation among the asset classes. As a result, risk allocation among uncorrelated risk factors instead of risk allocation among asset classes have become widely used. This thesis aims to di...
Seismic damage assessment using synthetic ground motions: a case study for Erzincan
Karim Zadeh Naghshineh, Shaghayegh; Askan Gündoğan, Ayşegül; Erberik, Murat Altuğ; Yakut, Ahmet (2015-10-14)
Estimation of seismic losses is a fundamental step for risk mitigation decision-making in urban regions. As the study region, Erzincan, a city on the eastern part of Turkey is selected which is located in the conjunction of three active faults as right lateral North Anatolian Fault, left lateral North East Anatolian Fault and left lateral Ovacik fault. Erzincan city center is in a pull-apart basin underlain by soft sediments that has experienced devastating earthquakes such as the 27 December 1939 (Ms8.0) ...
Tsunami human vulnerability assessment of silivri district, Istanbul
Tüfekçi Enginar, Duygu; Süzen, Mehmet Lütfi; Yalçıner, Ahmet Cevdet; Zaytsev, Andrey (null; 2018-04-08)
Assessment of tsunami human vulnerability is essential for development of tsunami hazard mitigation strategies especially when the possible affected areas are within a metropolis. The Sea of Marmara has faced tsunami events that are both generated by earthquakes or landslides. Therefore, all the coastal districts of the megacity Istanbul are prone to suffer from tsunami events. Some of the coastal districts of Istanbul have been studied in detailed within the concept of tsunami human vulnerability assessmen...
Citation Formats
A. Arslan Kelam, E. A. Mert, and H. Akgün, “Optical Fiber Technology to Monitor Slope Movement,” 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/43137.