SOIL MATERIAL DAM Russian patent published in 2017 - IPC E02B7/06 

FIELD: construction.

SUBSTANCE: dam erected from soil material such as both frozen and thawed types is built on a frozen base 1. The soil dam contains the upper 3 and the lower 4 thrust prisms between frozen impervious element 2. The inner zone of the lower prism is formed from coarse rockfill 5. The ridge and surface of the bottom slope are covered with the waterproof layer 6, for example, formed by clay soils. On the dam ridge the discharge pipes 7 are installed with a certain step along the dam length for interconnecting with atmosphere and for forced air circulation in the rockfill. The discharge pipes 7 can be also additionally equipped with a vacuum pump with automatic switching system. On the lower berm of the lower prism laying the perforated pipeline 11 with large holes is being laid. In the cavity of the pipeline 11 a small perforated pipeline 12 with holes is placed. the small perforated pipeline 12 is connected with the chamber in the form of a diffuser and through the constricted section - with a chamber. The air supply pipe for supply of hot compressed air is connected by one end with the compressor 16, and by another end it is connected with the active ejector nozzle. The ejector is also coupled with the air supply pipe for supplying of cold compressed air from the impeller 22 with the nozzle. The air supply pipes are provided with check valves. For the air intake and shutoff the valves 25 and 26 are installed. In order to control the air pressure in the rockfill 5 the air pressure sensor 27 is installed.

EFFECT: constant temperature mode in the macroporous rockfill and on the lower berm of the lower prism increases the efficiency by increasing the total air access into the rockfill area in severe ambient temperatures of the north building and climate zone.

3 cl, 4 dwg