Benchmark for soils in areas of permafrost and deep seasonal thawing

摘要

The utility model relates to devices for providing geodetic measurements and is used to determine the height reference of buildings and structures and to control sediment during their operation, especially when used in heaving soil conditions. To increase the stability of the benchmark for soils in areas of permafrost and deep seasonal thawing, in the benchmark for soils in areas of permafrost and deep seasonal thawing, installed in a well, containing a metal core with a mark at the top, with an anchor at the end, divided into aboveground and underground parts, connected to the anti-rocking device, and a filler for the cavity formed between the metal rod and the well, according to the utility model, the metal core is made hollow along the entire length up to the anchor, which is made in the form of an auger, and in its aerial part on the side there is a hole for installing the metal rod inside along its entire length up to the anchor of the anti-flood device, which is used as a thermal stabilizer, consisting of a sealed tubular body with an above-ground condenser part and an underground evaporative part, the internal cavity of which is filled with refrigerant to the level of seasonal thawing of the soil and its evaporation, while the underground part of the metal core, starting from the anchor and to the upper level of the refrigerant, is perforated, and the above-ground condenser part of the heat stabilizer through the side hole of the metal rod of the benchmark is brought out, rigidly connected to its above-ground part by clamps or welding and is located above it marks at an angle to the horizon, and the cavity between the metal rod of the benchmark and the well is filled with sand.