METHOD OF MONITORING STATE OF DIAPHRAGM FROM BORON-CUTTING ALUMINA-CEMENT CONCRETE PILES IN EARTH DAM BY ELECTRICAL TOMOGRAPHY Russian patent published in 2019 - IPC E02B7/06 E02B3/16 G01N27/00 

FIELD: ways to monitor.

SUBSTANCE: invention relates to methods for monitoring the state of anti-filtration elements of hydraulic structures, for example, earth dams, using electrometry using resistance methods. Method of monitoring the state of the diaphragm from the boron-cutting alumina-cement concrete piles 2 in earth dam 1 by the method of electro-tomography involves performing vertical electrical sounding at the control points, the construction of the distribution curves of electrical resistivity and their comparison with previously obtained. After the construction of diaphragm 2 in earth dam 1, steel electrodes 4 are installed in increments of at least 1 m, then the electrodes are switched by multicore geophysical cable 8, which is connected to the data collection and processing unit 7, probing is performed using a tomographic observation system with the subsequent construction of a two-dimensional map of the distribution of electrical resistivity and its comparison with the previously obtained one. Supply and receiving electrodes are installed directly into the body of the diaphragm 2 along its axis to a depth of at least 250 mm from the top edge to eliminate the distorting effect of the surface layer of the ground mass above diaphragm 2.

EFFECT: determination of places of concentrated intensive filtration with an accuracy of 1 m, reduction of terms and costs for their detection and elimination.

1 cl, 4 dwg