Instrumental complex for measuring the depth of soil freezing

 
PIIS086858860002826-0-1
DOI
Publication type Article
Status Published
Authors
Affiliation: Institute of Earthquake Prediction Theory and Mathematical Geophysics RAS
Address: Russian Federation
Affiliation: Institute of Earthquake Prediction Theory and Mathematical Geophysics RAS
Address: Russian Federation
Affiliation: Institute of Physics of the Earth (IPE) them. O.Yu. Schmidt
Address: Russian Federation
Affiliation: Institute of Physics of the Earth (IPE) them. O.Yu. Schmidt
Address: Russian Federation
Journal nameNauchnoe priborostroenie
EditionVolume 28 Issue 4
Pages98-102
Abstract

The electronic freezemeter has been developed for studying of influence of the frozen soil layer thickness on a seismic signal. While the effect of soil temperature on the speed of seismic waves is investigated quite fully, the wave attenuation is only subject for investigation. The electrical properties of frozen soils have also yet to be satisfactorily measured. This instrument allows to carry out monitoring of an average condition of territories or to reveal local features of the area. The measurements are carried out in an automatic mode, without disturbing the natural context of environmental. The various applications to which these instruments can be put makes them indispensable tools for work on weak, loose, swampy ground, for determination of possible loading in road maintenance, low-depth engineering networks, pipelines, etc. For the purposes of initial testing, two prototypes of the device were designed. The pilot registrations were conducted in the autumn-spring period of 2016 and 2017 in the territory of the Moscow Region. The obtained results show that both the absolute thickness of the frozen soil layer and the dynamics of the freezing depth depend very much on the conditions of the thermal sensor location (soil type, moisture and density, thickness of the snow and vegetation cover, illumination and purging). Tests of these prototypes fully confirmed the efficiency of the proposed method of recording the value of the soil freezing thickness.

Keywordsfreezemeter soil temperature, freezing depth, automation of observations seismic survey, monitoring
AcknowledgmentThis work was supported by a grant from the President of the Russian Federation for the support of scientific schools No. NSh 5545.2018.5, as well as within the framework of the state assignment of the IPE and ITPP RAS.
Received03.12.2018
Publication date03.12.2018
Number of characters646
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1. Dzhurik V.I., Leshchikov F.N. [Experimental studies of seismic properties of frozen soil]. Mezhdunarodnaya konferenciya po merzlotovedeniyu. Doklady i soobshcheniya [International conference on permafrostology. Reports and messages], Yakutsk, 1973, vol. 6. (In Russ.).

2. Kislov K.V., Gravirov V.V. [Seismic protection of extended objects]. Inzhenernaya zashchita [Engineering protection], 2015, vol. 6, no. 11, pp. 58–65. (In Russ.).

3. Mel’nikov V.P., Skvortsov A.G., Malkova G.V., Drozdov D.S., Ponomareva O.E., Sadurtdinov M.R., Tsarev A.M., Dubrovin V.A. [Seismic studies of frozen ground in arctic areas]. Geologiya i geofizika [Geology and geophysics], 2010, vol. 51, no. 1, pp. 171–180. (In Russ.).

4. Kislov K.V., Gravirov V.V. [Earthquake early warning for railways: perspectives, problems and solutions]. Nauchnoe Priborostroenie [Scientific Instrumentation], 2017, vol. 27, no. 1, pp. 40–45. Doi: 10.18358/np-27-1-i4045. (In Russ.).

5. GOST 24847-81 Soil. Methods of determination of depth of seasonal frost penetration. Moscow, Publishing house of standards, 1981. 12 p. (In Russ.).

6. Klimaticheskij spravochnik goroda Sankt-Peterburga. Temperatura grunta (pochvy) i eyo raspredelenie po glubine v Sankt-Peterburge i Leningradskoj oblasti [Climatic reference book of St. Petersburg. Temperature of soil (soil) and its distribution on depth to St. Petersburg and the Leningrad Region]. http://www.atlasyakutia.ru/weather/spravochnik/temp_grunt/climate_sprav-temp_grunt_260630687.php. (accessed 27.03.2018). (In Russ.).

7. Gravirov V.V., Kislov K.V. An electronic freezemeter. 11th International Conference "Problems of Geocosmos", Book of Abstracts. St. Petersburg, Petrodvorets, St. Petersburg State University, 2016, pp. 209–210.

8. Kislov K.V., Gravirov V.V. Issledovanie vliyaniya okruzhayushchej sredy na shum shirokopolosnoj sejsmicheskoj apparatury [Research of influence of the environment on noise of the broadband seismic equipment]. Series: Computing seismology, vol. 42, Moscow, Krasand Publ., 2013. 240 p. (In Russ.).

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