METHOD FOR MEASURING PRESSURE INSIDE ICE COVER Russian patent published in 2017 - IPC G01L15/00 

FIELD: measuring equipment.

SUBSTANCE: method for measuring pressure is used to determine the pressure which is average over the entire ice thickness in situ. Such data can be used to determine the characteristics of ice strength, to predict its destruction, to ensure the safe stay of people and equipment on ice and to predict the impact of ice on the shore, the bottom and hydraulic structures, as well as to design and construct hydraulic structures on the shelf of freezing seas and to ensure ice navigation. In the method for measuring the pressure inside the ice cover, two identical cylindrical sensors are involved, one of which is frozen in ice, and the other is freely positioned in a well drilled near the frozen sensor. In order to improve the temperature contact with the enclosing ice, the gap between the walls of the well and the sensor is filled with a temperature-conducting liquid. The signals from the frozen and free sensors are supplied to the signal converter unit, where they are digitized, the signal from the freely installed sensor is inverted and summed with the signal from the frozen sensor. The summed signal is supplied to the recorder. Thus, the intrinsic temperature deformation of the cylindrical sensor, connected to the temperature changes in the ice, is removed.

EFFECT: expanded functionality of monitoring the stress-strain state of the ice field or fast ice and increased accuracy of measurements to predict fracture or hummocking of the examinated ice field as a result of external influences.

1 dwg