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《Chinese Journal of Geotechnical Engineering》 2018-09
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Rock deformation memory effect: applications, experiments and theories

WANG Hai-jun;TANG Lei;REN Xu-hua;ZHONG Ling-wei;SI Fu-an;HSIEH Ariel;State Key Laboratory of Hydrology-Water Resource and Hydraulic Enginering, Nanjing Hydraulic Research Institute;Hohai University;China Renewable Energy Engineering Institute;The University of Western Australia;  
Based on the rock deformation memory effect(DME), the deformation rate analysis(DRA) method is a new method for determining the magnitudes and orientation of the in-situ stress. The DME DRA method has an inherent advantage over the traditional in-situ stress determination methods. A significant number of successful experiments have been done in many countries. But in China, the DME DRA method has not been explored and used by now. At the same time, the lack of the experimental and theoretical researches on the rock deformation memory prevents the improvements of the DME DRA method. A review of application, experimental and theoretical researches on rock DME is given. For the experiments, 7 topics include:(1) features of DRA curve,(2) memory fading,(3) artificial memory and in-situ stress memory,(4) duration of loading application,(5) preload times,(6) stress level memorized by DME,(7) memory under triaxial stress state. Two kinds of mechanisms and the corresponding theoretical models are discussed with their strengths and weakness analyzed. Finally, the necessity and the directions for the future researches are outlined.
【Fund】: 国家重点研发计划项目(2016YFC0401801);; 国家自然科学基金项目(51409170 51739008);; 江苏省自然科学基金项目(BK20171130);; 中央级公益性科研院所基本科研业务费重点项目(Y417007 Y417016)
【CateGory Index】: TU45
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