V.D. Lomtadze's experimental studies on compaction of clayey rocks allowed him to conclude that these rocks play an important role in the formation of groundwater in deep horizons of sedimentary basins (catagenesis zone) as accumulators of huge water reserves. Studies of V.D. Lomtadze contributed to the development of the sedimentogenic hypothesis of the origin of groundwater of the catagenesis zone.

The city of Yakutsk is located in the central part of Yakutsk. Yakutsk is located in the central part of the complex Yakutsk artesian basin, within the flat Prilenskaya lowland, which declines gently to the north. Absolute altitudes in the Yakutsk area are 100-120 meters. The climate of the region is sharply continental, the average annual temperature is minus 10°. The thickness of permafrost in Yakutsk reaches 200 meters.

Hydrogeological observations of groundwater regime are of great importance in the development of fields located in complex hydrogeological conditions. Numerous examples from the practice of development of waterlogged fields show that the cause of groundwater breakthroughs in mine workings is often an insufficient study of hydrogeological conditions of the field and lack of control over the regime of groundwater. Groundwater breakthroughs often delay mining operations for a long time, and their elimination is associated with large expenditures of material and technical resources. But with well-organized hydrogeological observations of the regime of these waters and their correct interpretation usually manages to prevent the occurrence of breakthroughs, and if they occurred, to outline the fastest and most effective ways of their elimination. At the same time, it is essential to identify the source of the breakthrough, which, of course, facilitates the fight against groundwater.