SU77669A1 - Electric permeable meter - Google Patents

Description

The invention relates to a device for o-defining the depth and degree of soil freezing of soil without disrupting its structure, by measuring a sharply increased 110 ° at the time of 3ajMepizii electrical resistance.

There are already known types of devices for measuring the depth of soil freezing, for example, Ratamsky’s permafrost and Belokrylov’s device. the work of which. oHaHaHa on that prince, which is about frost penetration: a soil on a particular head, is judged by the freezing of a pipe, placed in a tube or vessel, lowered into a different depth. Conventionally, we believe that the natural strata of the Soil freezes through to the same depth as in the soil of the disturbed structure placed in the IB well.

The invention described below serves to determine the depth and xaipaKTepa of soil freezing directly in the iB natural layer of its disturbance structure.

On the schematic drawing shows the proposed electrothermal meter.

The device consists of (wooden lath pierced in paraffin; 1 with a longitudinal groove, to which the knives 2 are equally spaced with screws 5, to replace the knives | In the groove of the lath through the holes in the oiTorHyTOii part; knives made of steel about 2 mm thick and being the electrodes between which the ground resistance is measured. The length of the knives and: the distance between them is taken equal to 3-5 cm, and w (and the knives are 2--3 times smaller. To each of the knives Solder the end of the electric wire 4 in the INSULATION, which protects from damp and neuvst wires to low temperatures. Wires 4 Pass through holes 7 drilled in the rail /. The length of the rail (it is the length of the electrothermometer) is accepted (depending on the depth of soil freezing from 1.0 to1.0 m more.

The longitudinal groove of the rail, in which the bent ends of the knives with the ends of the wires attached to them are located, is closed by a plate 5 of an insulating material with transverse holes for the passage of the NO.2. The plate 5 is fastened to the rail J by means of screws 6; the same screws come; the rear wooden para-waxed cover 8, inside which passes

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the lead 4. The ends of the wires 4 are connected to the switch (combing) 9. Each knot and bolt of the DFRB have its own. HOMesp. Measurement of resistance between two adjacent knives is carried out using instrument 10 (for example; measures, bridge T.m., son). The work of UstrayStv proceeds as follows. To install the device into the ground, the hole is torn off. One willow wall of the hole is trimmed and (Knei is applied by an electronic thromperdogger with knives 2 to the ground, with the rail / positioned vertically. Light strikes on the back cover 8 knives 2 are driven in. The ground is on Esyu length,; some insulation plate; 5 not will be pressed to the ground surface. Zatam: the pit is filled up earlier

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curved ground. A comb 9 with wires 4 connected to it is fixed in a room for observation. A measuring device 10 is also installed there.

The subject of the invention The electric permeation meter, which is used to determine the depth of soil freezing, based on a sharp increase in the electrical resistance of the ground or freezing, differs in that it is made as an equal at the same height on the vertical rail of the knives, which are eleutrods, between the bats; S31me: soil resistance is achieved and the KiOTOpbie is introduced into the soil by horizontal movement of the slats, immersed in a vertical hole.

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