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Project E!3838 PDF Print E-mail
Monday, 09 June 2008 11:28

The project is based on the research, design and realization of the automatized system of the observation of soil moisture changes. To reach this goal – that non- electrical quantity progress investigation, indirect non-invasive method taking advantage of correlation between observed quantity and electrical quantities have been selected. The determination of electrical impedance changes of the soil taking advantage of the method of electrical impedance spectroscopy (EIS). These changes are caused by the loading of soil by water. The changes of soil moisture produced by absorption of the soil, and water infiltration (bank, induced, rainfall) will be focused. The problem complexity of the problem is especially in the non-stationary water flowing through the non-saturated soil environment.

The experimental experience shows, the hydraulic conductivity coefficient of the non-saturated soil is substantially lower than of the saturated one (within the order of 1.10-3 to 1.10-4). The study of the water flow through the earth led to the design and verification of high sensitive laboratory electronic equipments, based on mentioned principles, capable of the indication of moisture and free water level changes in the space and time. The laboratory verification of the methods was worked out within granted project GA CR 103/01/0057. The design and realization of the equipment capable of the in situ monitoring of the moisture changes. The goal of the submitted project is the design, development and realization of the fully digitized automatic system of mentioned changes, and its application on real subjects at different localities, so that selected methods and built equipments will be verified in practical conditions. The results of soil moisture changes and free water level movement monitoring will be applicable in the mathematical models calibration and verification, localization of soil cohesiveness defects, and possibly of other changes.

The research, design, development and production of the automatized system of the soil moisture changes will be the main business of the Czech upholder – the project coordinator. The solution assumes the realization of one instrument for impedance measurement, one instrument capable of the measuring of water flow velocity using temperature field monitoring, and two systems of wireless data transport. Time period of 18 months is assumed to solve this part of the project.

Two suitable localities will be selected, one in Czech, the second in Slovakia, that make possible to solve the task of the monitoring within the next period of the project. The service from the Slovak partner institution – Slovak Technical University, Faculty of Civil Engineering, will be trained to be able to handle the equipment and ensure the continuous monitoring of soil moisture changes on the selected locality. This institution will ensure the evaluation of measured data and its delivery to the project upholder. The period of monitoring of selected localities is supposed within 14 months from the installations of both equipments. Within this period, the experimental measurements of water flow round the solid obstacles will be worked out. The results of these experiments will be continuously offered to the Swiss partner – Technical University Basel, where they will serve to the verification and calibration of mathematical models created at this institution.

The final period of the project – 4 months – will be devoted to the complex processing of results of the monitoring, their evaluation, and the offer of the automatized measuring system to practical applicants (basin management institutions, local administratives and TBD).

 

The most important realized outputs of the submitted EUREKA project

  • Production of the multichannel, fully digital Z-meter,
  • Production of the multichannel data logger capable of the temperature monitoring,
  • Production of the wireless data transfer system,
  • Development and realization of the software for the system control and evaluation of results,
  • Results of monitoring at selected localities,
  • Results achieved by the mathematical modeling,
  • Response of practice.

 

Will be presented in a form of particular reports, final report about the project solution, and will be published at scientific conferences and journals. Owing to the non-invasive character of selected monitoring methods, the business application of results is assumed.

Last Updated on Wednesday, 27 January 2010 18:33
 

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