Experimental research on energy release characteristics of water-bearing sandstone alongshore wharf

• Autorzy: Wang S. , Zhao Y. , Zou Z. , Jia H.

Identyfikatory

DOI

10.1515/pomr-2017-0077

• Języki publikacji: EN

Abstrakty

EN

It is important to evaluate the deformation and failure of sandstone in the foundation engineering of coast, river bank and lake shore. While the deformation and failure of sandstone is a comprehensive result of energy release and dissipation, and energy release is the internal reason which leads to global failure of the sandstone. The experimental analysis is conducted on the character of energy revolution of the sandstone specimen by rating loading and unloading, and the catastrophe model is followed in analyzing elastic strain energy accumulation and release in rock deformation and failure. The index based on elastic energy release is proposed to assess the rock brittleness. It is found that increasing water content is to relieve energy release and catastrophe failure of the rock specimen, and weakening the capacity of elastic energy storage. The peak and residual values of elastic energy are raised as the confining pressure increases, and the post-peak released energy decreases progressively. The confining pressure strengthens energy storage and inhibits energy release of the rock specimen, and saturation of rock will weaken this inhibit effect. The brittleness index decreases with increasing confining pressure as the rock specimen transforming from brittle to ductile.

Słowa kluczowe

EN

sandstone; energy release; water content; confining pressure

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2017
• Tom: S 2
• Strony: 147--153
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Wang S.

• International Joint Research Laboratory of Henan Province for Underground Space Development and Disaster Prevention Henan Polytechnic University Jiaozuo Henan 454003 CHINA
• Henan Key Laboratory for Green and Efficient Mining & Comprehensive Utilization of Mineral Resources, Henan Polytechnic University, Jiaozuo, Henan 454003, China

autor

Zhao Y.

• International Joint Research Laboratory of Henan Province for Underground Space Development and Disaster Prevention Henan Polytechnic University Jiaozuo Henan 454003 CHINA
• Henan Key Laboratory for Green and Efficient Mining & Comprehensive Utilization of Mineral Resources, Henan Polytechnic University, Jiaozuo, Henan 454003, China

autor

Zou Z.

• International Joint Research Laboratory of Henan Province for Underground Space Development and Disaster Prevention Henan Polytechnic University Jiaozuo Henan 454003 CHINA

autor

Jia H.

• 514 Brigade of North China Geological Exploration Bureau, Chengde, Hebei 067000, China

Bibliografia

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• 2. Chen, X.G., Zhang, Q.Y.: Research on the energy dissipation and release in the process of rock shear failure, Journal of Mining & Safety Engineering, Vol. 27, no 2, pp. 179-184, 2013.
• 3. Xue, D.J., Zhou, H.W., Zhong, J.C., Huang, Y.M.: Mininginduced release of energy from rock and mechanism on catastrophic failure, Chinese Journal of Rock Mechanics & Engineering, Vol. 33, no S2, pp. 3865-3872, 2014. 4. Zhang, Z.Z., Gao, F.: Research on nonlinear characteristics of rock energy evolution under uniaxial compression, Chinese Journal of Rock Mechanics & Engineering, Vol. 31, no 6, pp. 1198-1207, 2012.
• 5. Xiao, F.K., Liu, G., Shen, Z.L.: Research on effective elastic energy release rate of taoshan #90 coal seam, Chinese Journal of Rock Mechanics & Engineering, Vol. 34, No S2, pp. 4216-4225, 2015. 6. Huang, D., Li, Y.R.: Conversion of strain energy in triaxial unloading tests on marble, International Journal of Rock Mechanics & Mining Sciences, Vol. 66, No 1, pp. 160-168, 2014.
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• 8. Liu, X.S., Ning, J.G., Tian, Y.L., Guo, Q.H.: Damage constitutive model based on energy dissipation for intact rock subjected to cyclic loading, International Journal of Rock Mechanics & Mining Sciences, Vol. 85, pp. 27-32, 2016.
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• 12. Duda, M., Renner, J.: The weakening effect of water on the brittle failure strength of sandstone, Geophysical Journal International, Vol. 192, no 3, pp. 1091-1108, 2013.
• 13. Zuo, J.P., Huang, Y.M., Xiong, G.J., Liu, J., Li, M.M.: Study of energy-drop coefficient of brittle rock failure, Rock & Soil Mechanics, Vol. 35, no 2, pp. 321-327, 2014.
• 14. Tarasov, B., Potvin, Y.: Universal criteria for rock brittleness estimation under triaxial compression, International Journal of Rock Mechanics & Mining Sciences, Vol. 59, no 4, pp. 57-69, 2013.
• 15. Sukplum, W., Wannakao, L.: Influence of confining pressure on the mechanical behavior of Phu Kradung sandstone, International Journal of Rock Mechanics & Mining Sciences, Vol. 86, pp. 48-54, 2016.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).