Geodynamic monitoring of development of a karst on the basis of georadar sounding

摘要

The questions of practical application of georadar sounding for the detailed studying of development of a karst were considered in the article. The importance of the problem being solved for the planning of construction and further operation of industrial facilities in karst limestone areas is emphasized. In the last case, the geodynamic control of karst zones is necessary, as operation of objects in these zones is economic. The analysis of the interferences influencing the results of geodynamic control of a karst with use of georadar shooting is carried out. The model of the effect of temperature variations in the geological environment is made, which are the most essential reason of occurrence of interference. It was found that, in accordance with experimental studies with longer exposure to temperature penetration depth is limited to ten meters, and the lag time is one month in average for one meter. The temperature correction algorithm was proposed and tested, which allows to increase the reliability of registering geodynamics of karst processes with the use of georadar sensing.