DOI: 10.5593/sgem2017/12/S02.010


E. Gorbunova, E. Vinogradov, A. Besedina
Sunday 10 September 2017 by Libadmin2017

References: 17th International Multidisciplinary Scientific GeoConference SGEM 2017, www.sgem.org, SGEM2017 Conference Proceedings, ISBN 978-619-7105-99-5 / ISSN 1314-2704, 29 June - 5 July, 2017, Vol. 17, Issue 12, 71-78 pp, DOI: 10.5593/sgem2017/12/S02.010


This work is aimed at investigating the carbonate collector micro-jointing using the results of the precision underground water level monitoring at the Mikhnevo Geophysical Observatory (“Mikhnevo” GPO). For a long period of hydrogeological observations from August 2013 to December 2016 a database of local mini-cones recorded in the observation well was formed. The leading factors that influence the process of the level recovery of mini-cones based on the systematization and generalization of selected mini-cones are established. Special attention is devoted to the analysis of mini-cones with an incompletely level recovery during the observation day. Such an asymmetric form of mini-cones can be associated with micro-fractures. The presence of the similar disturbances in the collector structure was confirmed also by the observed peculiar “breakdown” or “jump” of the water level with amplitudes up to 10 mm and more in the case of a quasi-stationary filtration regime. Drainage of such micro-fractures leads to an unusual “germination” or “collapse” and, accordingly, to a change in the ratio between open (active) and closed micro-fractures.

Keywords: unconfined aquifer, mini-cones of depression, man-made impact