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格陵兰图瓦克文化中心

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建筑技艺 2010年第3期16卷 70-75页

作者：李昭君 schmidt/Hammer/Lassen Architects RambФll A/s niras a/s

格陵兰美丽的冰山、雪原和绵延的山脉给了建筑师极大的灵感，建筑立面完全被落叶松材料包裹，仿佛一层起伏飘动的金固荧幕。这层特殊的“皮肤”为建筑增添了通风的效果，与密实的实心固体结构形成对比。

关键词：格陵兰文化中心建筑立面建筑师落叶松密实

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Effects of temperature and thermally-induced microstructure change on hydraulic conductivity of Boom Clay

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Journal of Rock Mechanics and Geotechnical Engineering 2017年第3期9卷 1-13页

作者： W.Z. Chen Y.s. Ma H.D. Yu F.F. Li X.L. Li X. sillen Research Centre of Geotechnical and structural Engineering Shandong University Jinan Shandong 250061 China state Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil Mechanics Chinese Academy of Sciences Wuhan 430071 China University of Chinese Academy of sciences Beijing 100049 China European Underground Research Infrastructure for Disposal of Nuclear Waste in Clay Environment EIG Euridice Mol 2400 Belgium ONDRAF/niras Brussel 1210 Belgium

Boom Clay is one of the potential host rocks for deep geological disposal of high-level radioactive nuclear waste in Belgium. In order to investigate the mechanism of hydraulic conductivity variation under complex thermo-mechanical coupling conditions and to better understand the thermo-hydromechanical(THM) coupling behaviour of Boom Clay, a series of permeability tests using temperaturecontrolled triaxial cell has been carried out on the Boom Clay samples taken from Belgian underground research laboratory(URL) HADEs. Due to its sedimentary nature, Boom Clay presents acrossanisotropy with respect to its sub-horizontal bedding plane. Direct measurements of the vertical(Kv)and horizontal(Kh)hydraulic conductivities show that the hydraulic conductivity at 80℃ is about 2.4 times larger than that at room temperature(23℃), and the hydraulic conductivity variation with temperature is basically reversible during heatingecooling cycle. The anisotropic property of Boom Clay is studied by scanning electron microscope(sEM) tests, which highlight the transversely isotropic characteristics of intact Boom Clay. It is shown that the sub-horizontal bedding feature accounts for the horizontal permeability higher than the vertical one. The measured increment in hydraulic conductivity with temperature is lower than the calculated one when merely considering the changes in water kinematic viscosity and density with temperature. The nuclear magnetic resonance(NMR) tests have also been carried out to investigate the impact of microstructure variation on the THM properties of clay. The results show that heating under unconstrained boundary condition will produce larger size of pores and weaken the microstructure. The discrepancy between the hydraulic conductivity experimentally measured and predicted(considering water viscosity and density changes with temperature) can be attributed to the microstructural weakening effect on the thermal volume change behaviour of Boom Clay. Based on the ex

关键词： Boom Clay Permeability Thermal effect Anisotropy Microstructure

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