Comparative evaluation of the material of the artificial levees A case study along the Tisza and Maros Rivers, Hungary /
Artificial levees have major importance in protecting human livesand infrastructure as they are essential elements of the flood protectionmeasures. Nevertheless, the lack of the necessary information about theirstructure and internal composition might cause high risks. To monitor theirstability, int...
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| Format: | Article |
| Published: |
2023
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| Series: | JOURNAL OF ENVIRONMENTAL GEOGRAPHY
16 No. 1-4 |
| Subjects: | |
| doi: | 10.14232/jengeo-2023-44452 |
| mtmt: | 33705329 |
| Online Access: | http://publicatio.bibl.u-szeged.hu/28337 |
| Summary: | Artificial levees have major importance in protecting human livesand infrastructure as they are essential elements of the flood protectionmeasures. Nevertheless, the lack of the necessary information about theirstructure and internal composition might cause high risks. To monitor theirstability, integrated surveys are needed, including geophysical andgeotechnical methods. Levees along the rivers in Hungary were constructedmore than 150 years ago, and they were heightened several times; therefore,investigations are required to assure their performance in flood riskmitigation. Our investigation aimed to utilise non-invasive geophysicaltechniques, primarily electrical resistivity imaging, with the validationof geotechnical investigations to map and compare the compositional andstructural variations of two very different levee sections along RiverTisza and River Maros. Integrating the analysed drilling data with ERTprofiles showed that the main composition of the investigated Tisza leveesection is fine and medium silt with an average resistivity 30 Ωm, however,the investigated section of Maros levee was built of not only of fine andmedium silt but also of medium and coarse sand exhibiting higherresistivity values reaching up to 2200 Ωm. Several physical parameters weremeasured to study the nature of constituting levee materials like moisturecontent, grain-size, porosity, bulk-density, saturated hydraulicconductivity, and resistivity. It was found that most of them show aconnection with resistivity, but the hydraulic conductivity did not show adirect connection, however the latter could exhibit the aquitard nature ofTisza levee materials and the non-aquitard nature of Maros levee materials. |
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| Physical Description: | 1-10 |
| ISSN: | 2060-3274 |