DEVICE FOR DETECTION OF DEFORMATIONS OF SOIL MASSIF AND METHOD OF ITS OPERATION Russian patent published in 2013 - IPC E02B1/00 E02D35/00 

FIELD: construction.

SUBSTANCE: device comprises pressure vessels installed into a soil massif and used as setting marks, equipped with sensitive elements for remote measurement of pressure and temperature, a piezometric chamber that rises above pressure vessels and is equipped with a remote level indicator and temperature sensors and a hydraulic line, which hydraulically communicates the piezometric chamber with pressure vessels. Extension in case of hydraulic line stretching does not result in considerable reduction of its cross section area. The end of the hydraulic line opposite to the piezometric chamber is taken out from the soil massif into the area available for liquid drain. The piezometric chamber is filled with liquid to the level exceeding the elevation of installation of pressure vessels by not more than the height h, equal to h=Δperm/Δ, where Δperm - permissible error of detection of height position of a setting mark, mm; Δ - main error of a sensitive element for remote pressure measurement, unit fractions. The method of device operation includes establishment of of vertical positions of pressure vessels laid into the body of the soil massif and used as setting marks. The height position of each pressure vessel is determined using the mathematical error. Hydraulic lines are periodically drained from liquid, and by means of measurement of atmospheric air pressure in pressure vessels, as well as excessive pressure of air pumped into the hydraulic line under pressure close to the rated one for sensitive elements, corrections are determined, which are necessary to produce correct results of measurements of liquid pressure in pressure vessels. After replacement of the liquid in the piezometric chamber and in the hydraulic line until its temperature balances, by measurement of liquid temperature with all sensitive elements for temperature measurement, corrections are determined, which are required to produce the correct results of liquid temperature measurements. After replacement of the liquid in the piezometric chamber and in the hydraulic line until its temperature balances, control detection of pressure vessels height position is carried out, and (or) corrections are determined to calculate the height position of pressure vessels in case of measurements performance under the variable liquid temperature in the piezometric chamber and hydraulic line, i.e. during device operation they periodically calibrate both sensitive elements for measurement of pressure and sensitive elements for measurement of liquid temperature, and the device as a whole.

EFFECT: possibility of uninterrupted automated control of soil massif condition.

8 cl, 3 dwg