A thermal stress loading technique for large-sized hot dry rock mechanical tests
作者机构：State Key Laboratory of Geomechanics and Geotechnical EngineeringInstitute of Rock and Soil MechanicsChinese Academy of SciencesWuhanChina University of Chinese Academy of SciencesBeijingChina State Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengduChina
出 版 物：《Deep Underground Science and Engineering》 (深地科学（英文）)
年 卷 期：2024年第3卷第3期
页 面：326-337页
核心收录：
学科分类：070801[理学-固体地球物理学] 07[理学] 08[工学] 080104[工学-工程力学] 0708[理学-地球物理学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）]
基 金：National Natural Science Foundation of China Grant/Award Number:41972316 Sichuan Science&Technology Foundation Grant/Award Number:2022YFSY0007 Joint Funds of the National Natural Science Foundation of China Grant/Award Number:U2344226
主 题：deep rock engineering high-temperature and high-stress conditions hot dry rock large-sized model test thermal stress loading
摘 要：Testing of large-sized specimens is becoming increasingly important in deep underground rock mechanics and *** traditional mechanical loading,stresses on large-sized specimens are achieved by large host frames and hydraulic pumps,which could lead to great ***-cost testing machines clearly always have great *** this study,a new approach is proposed using thermal expansion stress to load rock specimens,which may be particularly suitable for tests of deep hot dry rock with high *** is a different technical route from traditional mechanical loading through hydraulic *** the rock mechanics test system of hot dry rock that already has an investment in heating systems,this technology may reduce the cost of the loading subsystem by fully utilizing the temperature *** paper presents the basic principle and a typical design of this technical *** feasibility analysis is then conducted based on numerical *** some technical details still need to be resolved,the feasibility of this loading approach has been preliminarily confirmed.
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