Smart Levee in Poland. Full-Scale Monitoring Experimental Study of Levees by Different Methods

Sekuła, Klaudia; Borecka, Aleksandra; Kessler, Daniel; Majerski, P.

doi:10.7494/csci.2017.18.4.2220

Cited by 9 publications

(7 citation statements)

References 6 publications

(9 reference statements)

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“…There are about 1000 sensors of the experimental control and measurement network (Figure 3.) that measure pore pressure and temperature [7]. Mechanical and physical parameters measured by sensors are recorded and analyzed by Monitoring & Modeling Center.…”

Section: Characteristics Of the Objectmentioning

confidence: 99%

Innovative solutions in monitoring systems in flood protection

2018

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Abstract. The article presents the possibilities of ISMOP -IT System of Levee Monitoring. This system is able to collecting data from the reference and experimental control and measurement network. The experimental levee is build in a 1:1 scale and located in the village of Czernichow, near Cracow. The innovation is the utilization of a series of sensors monitoring the changes in the body of levee. It can be done by comparing the results of numerical simulations with results from installed two groups of sensors: reference sensors and experimental sensors. The reference control and measurement sensors create network based on pore pressure and temperature sensors. Additionally, it contains the fiber-optic technology. The second network include design experimental sensors, constructed for the development of solutions that can be used in existing flood embankments. The results are important to create the comprehensive and inexpensive monitoring system, which could be helpful for state authorities and local governments in flood protection.

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Section: Characteristics Of the Objectmentioning

confidence: 99%

Innovative solutions in monitoring systems in flood protection

2018

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“…Several sensor networks were located inside the levee: six sections with 5-6 temperature and pore pressure sensors, 74 sections of 14 temperature sensors, two loops of optical fibre with temperature sensors with a 1m offset along the fibre, 6 strain sensors and 33 piezometers ( fig. 2) [8]. Additionally, GPR, ERT and LIDAR measurements were conducted periodically.…”

Section: Ismop Projectmentioning

confidence: 99%

Identification of zones of increased permeability using numerical modelling of temperature distribution - an ISMOP case study

2018

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The physical condition of earthen levees changes over time. Levee weakening can be caused by the leaching of fine grains of soil or by animal activity. Weakened areas can potentially cause destabilization or even collapse. Assessment of the physical condition of levees using GPR and geodetic measurements does not always correctly detect areas of increased permeability. Thermal anomalies, caused by existing zones of high permeability, are observed in levees during the transition of flood waves. They are generated by rapid infiltration of water with a different temperature than the temperature inside the levee. Therefore, inner thermal measurements may be used to detect places with higher permeability. This research was realized with 2D numerical modelling. Main aim was test possibility of using temperature sensors in weak zone detection. Test with different theoretical permeabilities proved that it is possible only in specific condition (i.e. thermal contrast). The geometry and geomechanical properties of the studied levee were taken from the ISMOP project (polish acronym: Computer system for monitoring river embankments).

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“…Monitoring inside the embankment included local measurements: pore pressure Thermomonitoring based on quasi-linear (2D) measurements using ber optic technology (ca. 1300 m of cable) were also carried out as well as point measurements which, if properly dense, allowed to obtain a quasi-spatial (3D) temperature distribution over time (Sekuła et al, 2017). Additionally, 6 inclinometers (with a length of 6.5 m each) and 24 open piezometers (with a total length of 82 m) were installed in the embankment.…”

Section: Experimental Ood Embankmentmentioning

confidence: 99%

“…General location scheme of the sensors of experimental and reference measurement network placed in the experimental ood embankment(Sekuła et al, 2017) (a) design, dimensions in mm (b) reinforcement during construction (c) nal application…”

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Geodetic monitoring of earth-filled flood embankment subjected to variable loads

Kuraś

Ortyl

Owerko

et al. 2018

Reports on Geodesy and Geoinformatics

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The article presents an example of supplementing geotechnical monitoring with geodetic observations. The experimental flood embankment built within the ISMOP project (Information Technology System of Levee Monitoring) was subjected to continuous monitoring based on built-in measuring sensors. The results of geodetic monitoring used for observation of earth-filled flood embankment subjected to external loads are presented in the paper. The tests were carried out on an experimental food embankment forming a closed artificial water reservoir. The observations were carried out for two purposes. The first was long-term monitoring, which was aimed to determine the behaviour of the newly built embankment. The second purpose was to check the reaction of the levee to the simulated flood wave, caused by filling and draining the reservoir. In order to monitor the displacements of the earth-filled embankment, it was necessary to develop the proper methodology. For the needs of research works, an appropriate network of 5 reference points and 48 survey markers has been designed and established. The periodic measurements were carried out using precise robotic total station. The stability of the reference frame was each time checked and displacements of survey markers were determined based on it. The final results allow to reveal the reaction of levee to external loads. The displacement values were referred to the course of the filling and draining experiment to indicate the relationship between them. In the field of long-term monitoring the results clearly imply the dominance of displacements outside the reservoir for points located on the embankment, in contrast to points on the crest and foreground, which do not show significant movements. On the other hand, in the field of testing the embankment reaction to the flood wave, obtaining reliable results was possible thanks to high-accuracy geodetic measurements. Small displacement values, often at the level of their determination errors, were averaged for groups of points with the same height of foundation. A sizable number of points allows to perceive some tendencies and the relation between embankment soaking, hence its movement directions can be noticed. During periods when the levee was still saturated with water, slight movements outside the reservoir were revealed. On the other hand, the following period of drying caused movement in the opposite direction.

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Smart Levee in Poland. Full-Scale Monitoring Experimental Study of Levees by Different Methods

Cited by 9 publications

References 6 publications

Innovative solutions in monitoring systems in flood protection

Innovative solutions in monitoring systems in flood protection

Identification of zones of increased permeability using numerical modelling of temperature distribution - an ISMOP case study

Geodetic monitoring of earth-filled flood embankment subjected to variable loads

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