Triaxial Test and Constitutive Model for Hydrate-bearing Clayey Sand

YANG Zhou-jie; ZHOU Jia-zuo; CHEN Qiang; WAN Yi-zhao; WEI Chang-fu; MENG Xiang-chuan

doi:10.11988/ckyyb.20190935

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Journal of Changjiang River Scientific Research Institute ›› 2020, Vol. 37 ›› Issue (12) : 139-145. DOI: 10.11988/ckyyb.20190935

ROCKSOIL ENGINEERING

Triaxial Test and Constitutive Model for Hydrate-bearing Clayey Sand

YANG Zhou-jie¹, ZHOU Jia-zuo², CHEN Qiang^3,4, WAN Yi-zhao^3,4, WEI Chang-fu^1,2, MENG Xiang-chuan¹

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Abstract

Triaxial shear tests were conducted on self-prepared hydrate-bearing sediments to obtain the influences of effective confining pressure and saturation on the strength and rigidness of hydrate-bearing sediments. The test specimens were made from artificial clayey fine sand in reference to the particle size distribution of sediment in the north part of South China Sea. CO₂ hydrate-bearing sediments with different saturations were prepared by a self-developed triaxial test machine, and the triaxial shear tests were carried out under the effective confining pressure of 1 MPa, 2 MPa, and 4 MPa. As confining pressure changes automatically with gas pressure, the effective confining pressure remained unchanged during the formation of hydrate when gas was consumed. The experimental results reveal that the initial elastic modulus increased with the rising of hydrate saturation, while independent of the effective confining pressure. The initial Poisson ratio decreased with the increase of effective confining pressure while grew with the rising of hydrate saturation. The strength index cohesive force increased with the increase of hydrate saturation, while the internal friction angle was independent of hydrate saturation. In addition, the nonlinear elastic constitutive model for hydrate-bearing sediment was established by introducing a parameter hydrate saturation based on Duncan-Chang’s model, and the proposed model was validated by test data.

Key words

hydrate-bearing sediments / clayey sand / triaxial test / mechanical behavior / constitutive model

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YANG Zhou-jie, ZHOU Jia-zuo, CHEN Qiang, WAN Yi-zhao, WEI Chang-fu, MENG Xiang-chuan. Triaxial Test and Constitutive Model for Hydrate-bearing Clayey Sand[J]. Journal of Changjiang River Scientific Research Institute. 2020, 37(12): 139-145 https://doi.org/10.11988/ckyyb.20190935

References

[1] MAKOGO Y F. Natural Gas Hydrate:A Promising Source of Energy[J]. Journal of Petroleum Science and Engineering, 2010, 2(1): 49-59.
[2] ZHAO J F,YAO L,SONG Y C,et al. In situ Observations by Magnetic Resonance Imaging for Formation and Dissociation of Tetrahydrofuran Hydrate in Porous Media[J]. Magnetic Resonance Imaging,2011,29(2):281-287.
[3] MASLIN M, OWEN M, BETTS R, et al. Gas Hydrates: Past and Future Geohazard[J]. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2010,368(1919): 2369-2393.
[4] JIA Y G,Zhu C Q, LIU L P, et al. Marine Geohazards: Review and Future Perspective[J].Acta Geologica Sinica, 2016, 90(4): 1455-1470.
[5] WAITE W F, SANTAMARINA J C, CORTES D, et al. Physical Properties of Hydrate-bearing Sediment[J]. Advanced Earth and Space Science, 2009, 47(4):23-35.
[6] CHOI J H, DAI S, CHA J H, et al. Laboratory Formation of Non-cementing Hydrates in Sandy Sediments[J]. Geochemistry Geophysics Geosystems, 2014, 15(4): 232-245.
[7] YONEDA J, MASUI A, KONNO Y, et al. Mechanical Properties of Hydrate-bearing Turbidite Reservoir in the First Gas Production Test Site of the Eastern Nankai Trough[J]. Marine and Petroleum Geology, 2015, 66(2): 471-486.
[8] HYODO M, YONEDA J, YOSHIMATO N, et al. Mechanical and Dissociation Properties of Methane Hydrate-bearing Sand in Deep Seabed[J]. Soil and Foundation, 2013, 53(2): 299-314.
[9] 张旭辉, 王淑云, 李清平, 等. 天然气水合物沉积物力学性质的试验研究[J]. 岩土力学, 2010, 31(10): 3069-3074.
[10]CHOI J H, DAI S, LIN J S, et al. Multistage Triaxial Tests on Laboratory-formed Methane Hydrate-bearing Sediments[J]. Journal of Geophysical Research: Solid Earth, 2018, 123(5): 3347-3357.
[11]王淑云,鲁晓兵. 水合物沉积物力学性质的研究现状[J]. 力学进展,2009, 39(2): 176-188.
[12]刘昌岭, 孟庆国, 李承峰, 等.南海北部陆坡天然气水合物及其赋存沉积物特征[J]. 地学前缘, 2017, 24(4): 41-50.
[13]UCHIDA S, SOGA K, YAMAMOTO K. Critical State Soil Constitutive Model for Methane Hydrate Soil[J]. Journal of Geophysical Research: Solid Earth, 2012, 117(3): 3209-3221.
[14]YAN R T, WEI C F. Constitutive Model for Gas Hydrate-bearing Soils Considering Hydrate Occurrence Habits[J]. International Journal of Geomechanics, 2017, 17(8), doi: 10.1061/(ASCE)GM.1943-5622.0000914.
[15]SANCHEZ M, GAI X, SANTAMARINA J C. A Constitutive Model for Gas Hydrate-bearing Sediments Incorporating in Elastic Mechanisms[J]. Computers and Geotechnics, 2017, 84(8): 28-46.
[16]KIMOTO S, OKA F, FUSHITA T. A Chemo-thermo-mechanically Coupled Analysis of Ground Deformation Induced by Gas Hydrate Dissociation[J]. International Journal of Mechanical Science, 2010, 52(2): 365-376.
[17]NASHED O, SABIL K M, ISMAIL L, et al. Hydrate Equilibrium Measurement of Single CO₂ and CH₄ Hydrate Using Micro DSC[J]. Journal of Applied Sciences, 2014, 14(23): 3364-3368.
[18]KHLEHNIKOV V N, ANRONOVS S V, MISHIN A S, et al. A New Method for the Replacement of CH₄ with CO₂ in Natural Gas Hydrate Production[J]. Natural Gas Industry B, 2016, 3(5): 445-451.
[19]KOMATSU H, OTA M, SMITH R L, et al. Review of CO₂-CH₄ Clathrate Hydrate Replacement Reaction Laboratory Studies:Properties and Kinetics[J]. Journal of Taiwan Institute of Chemical Engineers, 2013, 44(4): 517-537.
[20]石要红, 张旭辉, 鲁晓兵, 等. 南海水合物黏土沉积物力学特性试验模拟研究[J]. 力学学报, 2015, 47(3): 521-528.
[21]DUNCAN J M, CHANG C Y. Nonlinear Analysis of Stress and Strain in Soils[J]. ASCE Soil Mechanics and Foundation Division Journal, 1970, 96(5): 1629-1653.
[22]颜荣涛, 梁维云, 韦昌富, 等. 考虑赋存模式影响的含水合物沉积物的本构模型研究[J]. 岩土力学, 2017, 38(1): 10-18.
[23]KULHAWAY F H, DUNCAN J M. Stress and Movement in Oroville Dam[J]. Journal of the Soil Mechanics and Foundation Division, 1972, 98(7): 653-665.