Geoinformatika 2017; 2(62) : 55-63 (in Ukrainian)
GEOELECTRIC STUDY OF ENGINEERING-GEOLOGICAL CONDITION OF SOUTHWESTERN KRYVBAS. PART 3. THE RESULTS OF APPLICATION GEOELECTRIC METHODS IN SOLVING GEOTECHNICAL PROBLEMS
P.I. Pigulevskiy1,2, V.K. Svystun1, O.S. Kyryliuk3
1Dnіpropetrovsk geophysical expedition “Dnіprogeofizika” SGE “Ukrgeofizika”, 1, Geophysical Str., Dnіpro, 49057, Ukraine, e-mail: dpge@ukr.net
2Institute of Geophysics, NAS of Ukraine, 32, Palladin Ave., Kyiv, 03680, Ukraine, e-mail: pigulev@ua.fm
3Institute for Nature Management Problems and Ecology, NAS of Ukraine, 6, Moscovskaya Str., Dnіpro, 49000, Ukraine, e-mail: ippe-main@svitonline.com
Purpose. The aim of the article is to apply geophysical surveys to studying engineering-geological conditions of the south-western part of Kryvbas in solving problems of ecological safety.
Design/methodology/approach. Analysis of the changes of geo-electric resistance in the four years from 2008 till 2012 and hydrogeological studies of wells observation allowed us to establish their connection with fluctuations in the water level over this period and obtain an analytical equation to determine the component of “flooding” in the first surface of the aquifer.
Joint processing of geoelectric studies carried out at 1983 and 2008 permitted to obtain a detailed geotechnical zoning study area.
Findings. Based on the results obtained, research maps were made which clarify and specify the features of the geoelectric state of the investigated area both in three-dimensional space and time (the period from 2008 till 2012). Using analytical equations to determine the component of “flooding” in the first surface of the aquifer made it possible to build a productive map showing the impact of natural and hydraulic engineering works in the study area for the four-year period. The data of geoelectric studies carried out at 1983 and 2008, together with the results of the previous geological and geophysical studies, allowed us to make a detailed map of the engineering-geological condition of southwest of Kryvbas.
We have given practical examples of applying the research results of geoelectric methods to clarifying and specifying particular features of the hydrogeological and geotechnical conditions depending on the anthropogenic impact on the geoecological situation of the south-western Kryvbas.
Practical value/implications. The proposed technology of research can quickly detect and map the zones of flooding by geoelectric methods and increase the accuracy of engineering and geological zoning for complex study of the effect of the technosphere on the geological environment of Kryvbas in solving problems of ecological safety.
Keywords: Krivoy Rog basin, electrical properties, flooding, vertical electrical sounding (VES), natural electric field.
References:
- Pigulevskiy P.I., Svystun V.K., Kyryliuk O.S. Geoelectric study of engineering-geological condition of southwestern Kryvbas. Part 1: Physical and geological background. Geoinformatika, 2016, no. 3 (59), pp. 25-31 [in Ukrainian].
- Pigulevskiy P.I., Svystun V.K., Kyryliuk O.S. Geoelectric study of engineering-geological condition of southwestern Kryvbas. Part 2: The results of the application of geoelectric methods in the survey of flooding areas. Geoinformatika, 2016, no. 4 (60), pp. 62-74 [in Ukrainian].
- Svistun V.K. Vykorystannja geofizychnyh metodiv pry vyrishenni geoekologichnyh problem Kryvbasu: dys. … kand. geol. nauk. Dnipropetrovsk, Ukraine, DNVZ “National Mining University”, 2016, 182 p. [in Ukrainian].
- Kyryliuk A.S., Pigulevskiy P.I., Svystun V.K. Using of geo-electrical methods at the study of modern flooding at the south Kryvbas. Zbirnyk naukovykh prats Ukrainskoho derzhavnoho heolohorozviduvalnoho instytutu. Kyiv, Ukraine, 2016, no. 2, pp. 137-144 [in Ukrainian].