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Influence of a quicksand on engineering constructionsAt expansion of river-front of the Obvodny channel (St. Petersburg) after the beginning of the rabbet ramming into a bottom of the channel , there was a quick immersing in a ground of lines of communication (a high-voltage cable of underground, a telephone cable and a sewer ). These objects are taking place from water on distance approximately in 30 m. Approximately there, where were made SSP lines 1 and 2.
The tectonic disturbance revealed by these profiles (it is shown by ellipses) is in accuracy there where immersing communications took place. To find out the mechanism of influence this work on communications on distance 30 m the profile N 3 on the edge of water was made. This profile also has opened a tectonic disturbance. Profiles NN 4 and 5 also have opened the same tectonic disturbance the line of which is shown by a dot lines.
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