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Home»Holidays»Hydrogeological conditions for the construction of air transmission lines

Hydrogeological conditions for the construction of air transmission lines

September 18, 2018

In the studied territory, aquifer -related horizons associated with quarterly deposits and deposits of Devonus and carbon.

The aquatic rocks of the quarter cut are sand-pertressed allyuvius valley of large rivers, as well as loose accumulations of the polyfacial complex, mainly Deluvial Supri and loams, and eolo sands. The waterproofs of clays and loams work.

Alluvial formations are characterized by significant water. The flow rate of springs and wells ranges from 1.0 to 10 l/s. Water level is at a depth of 0.5 – 10.0 meters. Power supply in the area of ​​the proliferation of the aquifer. During the flood period, power is observed by the aquifer with river waters. In the alluvial water group, the hydrogeology of the ancient Yenisei River Valley is well studied, where there is an underground stream of the north-west direction. The power of the aquifer is 1-20 meters, the depth of the occurrence is 0.5-16 meters.

Aquatic horizons of deluvial savings are characterized by lens. Their water and regime completely depends on atmospheric precipitation. The water level is set at depths of 2.0 to 20.0 meters. The flow rate ranges from 0.001 to 0.1 l/mm. In the chemistry of the water of quarterly deposits are diverse. Mineralization varies from 0.1 to 6.8 g/l, stiffness-0.3-0.6 m-EKV. Saline composition is usually dominated by bicarbonates of calcium and sodium, less often there are water sulfate -sodium and chloride – sodium.

Deluvial deposits do not have practical significance, but related to alluvial horizons quite suitable for drinking and technical water supply.

Sandstones, conglomerates, limestones, gravelites, tuffs and coal layers participate in the hydrogeological context of carbonate. Cracking and crack -planned water. The synclinal occurrence of aquifers and the presence of argillite waterproofs in their roof sometimes determines the pressure nature of these waters. The regulatory of the rocks is uneven and depends on the degree of fissitiveness and nutrition conditions, mainly atmospheric. Depth of the occurrence of 20 to 80 meters, a debate from 0.002 to 4.0 l/s. According to the composition of the water, fresh and brackish with mineralization is 1.0-4.0 g/l, mainly sulfate and bicarbonate, sodium, less often magnesium. Stiffness from 2.9 to 25.2 m-EKV. The waters of the upper carcass of the cut for drinking purposes are unsuitable, and the lower part of the cut is used for water supply.

Cracking waters are associated with Devonian formations, the zones of weathering and cracking – residential waters of the zones of crushing. Wodging rocks are terrigenous, limestones and tuffa. Nutrition is carried out due to atmospheric precipitation and infiltration of infiltration water. The depth of the occurrence ranges from 4 to 20 meters on the area of ​​local anticlinal uplifts. The maximum flow rate occurs to 5.0 l/s and decrease with depth to 0.001 l/s. Chemically is dominated by bicarbonate calcium, sodium and magnesium waters with mineralization from 0.4 to 2.0 g/l. Tighting from 6 to 35 it. Grad., with depth rises to 38.5 m-EKV. At large depths within the anticlinal structures, strong brine with mineralization up to 250 g/l of chloride-sodium type are found.

In general, in the left -bank part of the Minusinsk basin, especially the Uybat steppe, a lack of water is sharply felt. Water supply is carried out due to river and groundwater of Quaternary and Dogllenic deposits. Search wells for water, even to a greater depth in anticlinal structures, most often remain dry. And weakly pressure waters and rare sources with a moron of 1-5 l/s are often associated with synclines. The waters of coal and Devonian deposits usually do not form any significant clusters, and the flow rate of sources rarely reaches 0.5 l/s. In the national economy, they are almost not applied.

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