Analysis of Impact of Moisture Content on Rock Thermal Conductivity Coefficient Using TCS Method

Abstract:

The coefficient of thermal conductivity scanner (TCS) was used to test granodiorite, sandstone and rhyolite samples, focuses on the changing rule of the thermal conductivity coefficient of rock under different moisture content. The coefficient of thermal conductivity of the rock increases with water content, and follow a linear relationship. The relative thermal conductivity of three kinds of rock sample is: granodiorite higher than sandstone and higher than rhyolite. The higher the structure density at the same time, the smaller the porosity, the stronger the cementation, the higher the strength, the greater the thermal conductivity of rock mass. This conclusion can be used with geothermal energy development, and has certain reference value.

• Periodical: Advanced Materials Research (Volume 1095)
• Pages: 429-432
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1095.429
• Online since: March 2015
• Authors: Zi Wang Yu*, Yan Jun Zhang, Ping Gao
• Keywords: Influence Law, Moisture Content, TCS Test of Rock Mass, Thermal Conductivity Coefficient

References

[1] Tianfu XU, Yanjun Zhang and Zhaofa Zeng. Technology progress in an enhanced geothermal system (Hot Dry Rock). Science & Technology review, Vol. 32 (2012), pp.42-45. In Chinese.

[2] Ping Gao, Yanjun Zhang and Ziwang Yu. Correlation study of shallow layer rock and soil thermal physical tests in laboratory and field. Geothermics, Vol. 53 (2015), pp.508-516.

DOI: 10.1016/j.geothermics.2014.09.005

[3] Distributions of geotemperature and terrestrial heat flow density in lower YANG TZE area. ACTA Geophysica Sinica，Vol. 38 (1995), pp.469-476. In Chinese.

[4] Y Wu, Zhenmin Jin and xingong Ou. Lithospheric thermal struture beneath the area of the Chinese continental scientific drilling site (CCSD). Acta Petrologica Sinica, Vol. 21 (2005), pp.439-450. In Chinese.

[5] Nansheng Qiu . Characters of thermal conductivity and radiogenic heat production rate in basins of northwest China. Chinese Journal of Geology，Vol. 37 (2002), pp.196-206. In Chinese.

[6] Yanjun Zhang, Ziwang Yu and Rui Huang. Measurement of thermal conductivity and temperature effect of geotechnical materials. Chinese Journal of Geotechnical Engineering，Vol. 3 (2009), pp.213-217. In Chinese.

[7] Mo Xu, Di Wang and Liangwen Jiang. Review on thermal conductivity coefficient of rock and soil mass. Journal of Earth Science and Environment, Vol. 33 (2011), pp.421-427. In Chinese.

[8] Yury Popov, Irina Bayuk, Anton Parshin. New methods and instruments for determination of reservoir thermal properties. Proceedings, Thirty-Seventh Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California (2012).

[9] Y.A. Popov, V.V. Berezin and V.G. Semionov. Complex detail investigations of the thermal properties of rocks on the basis of a moving point source. Izvestiya, Earth Physics. Vol. 21, No. 1(1985).