Ways to Increase the Efficiency of Thermopressiometry

Authors

DOI:

https://doi.org/10.15802/stp2021/237279

Keywords:

blades-stamps, thermopressiometer, deformation properties, thawing bowl, hot stamping method

Abstract

Purpose. The purpose of the work is to identify the ways to increase the efficiency of engineering research, based on the significant amount of exploration work required in the creation of modern man-made objects, taking into account the shortcomings of existing instruments and equipment used to measure soil stress, and in relation to the need to improve the design of thermopressiometers, which are aimed to facilitate the study of frozen soils. Methodology. The ways to improve the blade thermopressiometer for the study of frozen soils with different aggregates were selected by the comparative-analytical method and the method of analogy. Thawing depth, absolute soil sediment, deformation modulus etc. were determined by thermal-technical calculations. Findings. The application issues of concern of the existing thermopressiometers (limited research of soils of a certain type, complexity and insufficient accuracy of readings) identified can be overcome by the proposed improved design of a blade thermopressiometer for testing frozen sandy-clay soils. It is based on the improved heating circuit, the applicationd of quality materials and changing the form of the blades and body. The device is intented for use on permafrost and natural frozen soils of the world, including Ukraine. Originality. For the first time we offered a model of an advanced thermopressiometer with an improved body shape made of high-quality corrosion-resistant materials, including non-metallic ones. It has the reduced number of blades to one retractable sector blade-stamp (square or round) and one heating blade-stamp. A special probe design with mechanical/hydraulical sensor drive with a thermocouple (or with two fork probes to improve the measurements) was proposed. It was also recommended to introduce an electric conductive system designed for thawed soils, with a rod for measuring the retractable blade-stamp. The possibility of using a thermopressiometer during the study of seasonally frozen soils is established. Practical value. Improving the device model should facilitate its application in engineering and geological research for various types of construction, including transport, hydraulic engineering, which use the methods of deep freezing of weak and unstable soils.

References

Aleinikov, A. S., & Petrova, A. G. (2017). Numerical Analysis of Frozen Soil Thawing under the Influence of Rainwater Infiltration. Izvestiya of Altai State University, 4(96), 72-77. DOI: https://doi.org/10.14258/izvasu(2017)4–12 (in Russian)

Amaryan, L. C. (1986). Lopastnaya pressiometriya i ee primenimost v inzhenernoy geologii. Tekhnologiya i tekhnika polevykh ispytaniy gruntov: sbornik nauchnykh trudov PNIIIS, 14-20. (in Russian)

Amaryan, L. S., Vasilev, A. B., & Tsinskiy, B. V. (1981). Rukovodstvo po ispytaniyu gruntov lopasnymi pressiometrami i pressiometrami-sdvigomerami. PNIIIS. (in Russian)

Soils. Field methods for determining the strength and strain characteristics, 10-13 GOST 20276-2012. (2013). (in Russian)

Yefimov, V. M., Kravtsova, O. N., Stepanov, A. V., Timofeev, A. V., Vasilchuk, Yu. K., & Tappyrova, N. I. (2017). Issledovanie vliyaniya poverkhnostno-aktivnykh veshchestv na prochnost merzlykh gruntov kriolitozony Respubliki Sakha (Yakutiya). Arctic and Antarctica, 4, 80-85. DOI: https://doi.org/10.7256/2453-8922.2017.4.25035 (in Russian)

Yefimov, V. M., Stepanov, A. V., Tappyrova, N. I., Kravtsova, O. N., & Stepanov, A. A. (2017). Vliyanie tsiklov promerzaniya – protaivaniya na teplo-massoobmennye svoystva tekhnogennykh kriogennykh gruntov severo-vostochnykh rayonov kriolitozony. Arctic and Antarctica, 4, 73-79. DOI: https://doi.org/10.7256 / 2453-8922.2017.4.25027 (in Russian)

Isaev, V. S., Tyurin, A. I., Sergeev, D. O., Gorshkov, Е. I., Volkov, N. G., & Stefanov, S. M. (2016). The day of science and innovation: new methods and ways of field geocryological researches. Moscow University Bulletin. Series 4. Geology, 1, 98-102. DOI: https://doi.org/10.33623/0579-9406-2016-1-98-102 (in Russian)

Minkin, M. A. (2005). Metodika i metody inzhenerno-geokriologicheskikh izyskaniy. Ukhta: Institut upravleniya informatsiey i biznesom. (in Russian)

Morklianyk, B., & Protsenko, P. (2018). The effect of greenhousing of soils on the building foundations function in the use of heat pumps. Vìsnik L’vìvs’kogo Nacìonal’nogo Agrarnogo Unìversitetu. Arhìtektura ì Sìl’s’kogospodars’ke Budìvnictvo, 19, 74-78. DOI: https://doi.org/10.31734/architecture2018.19.074 (in Ukrainian)

Neradovskiy, L. G. (2018). Investigation of frozen soil under screening effect of the primary field of the high-frequency vertical magnetic dipole. Mining informational and analytical bulletin, 4, 139-148. DOI: https://doi.org/10.25018/0236-1493-2018-4-0-139-148 (in Russian)

Deryabin, G. N., Mareninov, I. A., Dubikov, G. I., Belov, V. S., & Moisey, O. N. (1988). USSR Patent № 1446236 A method for testing thawing soils and a pressiometer for its implementation (in Russian)

Deryabin, G. N., Martynov, A. I., Moses, O. N., Pozhidaeva, I. V., & Pronyaeva, Y. I. (1990). USSR Patent № 1573088 Testing method of the thawing soil Pressimetra (in Russian)

Tarasov, B. L., Lushnikov, V. V., & Pavlov, V. V. (1976). Otchet o nauchno-issledovatelskoy rabote po teme № 02487 «Issledovanie i vnedrenie ratsionalnogo ustroystva osnovaniy i fundamentov v slabykh vodonasyshchennykh gruntakh» ( Vol. 1-2). Sverdlovsk. (in Russian)

Ulyanov, V. Yu. (2020). Possible pressiometer design for tests of frozen sandy-clayy soils. Nauka yak rushijna antykryzova syla: zbirny`k statej za materialamy` VII mizhnarodnoyi naukovo-prakty`chnoyi konferenciyi (рр. 5-10). (in Russian)

Yushkov, B., & Tretyakova, O. (2014). Anisotropy effect of the clay soil masses on the stress-strain state of transport tunnels. Russian Journal of Transport Engineering, 1(3), 1-10. DOI: https://doi.org/10.15862/01ts314 (in Russian)

Li, G., Yu, Q., Ma, W., Mu, Y., Li, X., & Chen, Z. (2014). Laboratory testing on heat transfer of frozen soil blocks used as backfills of pile foundation in permafrost along Qinghai-Tibet electrical transmission line. Arabian Journal of Geosciences, 8(5), 2527-2535. DOI: https://doi.org/10.1007/s12517-014-1432-9 (in English)

Schwarz, H., & Bertermann, D. (2020). Mediate relation between electrical and thermal conductivity of soil. Geomech. Geophys. Geo-energ. Geo-resour, 6(50), 1-16. DOI: https://doi.org/10.1007/s40948-020-00173-x (in English)

Still, B., Yang, Z., & Ge X. (2013). Sampling, Machining and Testing of Naturally Frozen Soils. In Mechanical Properties of Frozen Soil (H. Zubeck, Z. Yang, Eds., pp. 49-61). West Conshohocken, PA: ASTM International. DOI: https://DOI.org/10.1520/STP156820130003 (in English)

Still B., Proskin S., Zubeck H., & Yang Z. (2013). Frozen-Soil Classification With Index Testing. In Mechanical Properties of Frozen Soil (H. Zubeck, Z. Yang, Eds., pp. 169-179). West Conshohocken, PA: ASTM International. DOI: https://DOI.org/10.1520/STP156820130017

Zhengchao T., Tusheng R., Joshua L., & Heitman R. (2020). Horton Estimating thermal conductivity of frozen soils from air‐filled porosity. Soil Science Society of America Journal, 84(5), 1650-1657. DOI: https://doi.org/10.1002/saj2.20102

Published

2021-04-15

How to Cite

Ulyanov, V. Y. (2021). Ways to Increase the Efficiency of Thermopressiometry. Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport, (2(92), 84–91. https://doi.org/10.15802/stp2021/237279

Issue

Section

TRANSPORT CONSTRUCTION