岩体真三轴现场蠕变试验系统研制与应用  

DEVELOPMENT OF ROCK MASS TRUE-TRIAXIAL SITE CREEP TESTING SYSTEM AND ITS APPLICATION

作　　者：李维树[1] 周火明[1] 钟作武[1] 张宜虎[1] 郝庆泽 

机构地区：[1]长江科学院水利部岩土力学与工程重点实验室,湖北武汉430010 [2]长春市朝阳试验仪器有限公司,吉林长春152500

出　　处：《岩石力学与工程学报》2012年第8期1636-1641,共6页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家重点基础研究发展计划(973)项目(2011CB710603);国家自然科学基金资助项目(51179013);水利部公益性行业科研专项(201001008)

摘　　要：针对高地应力环境岩体开挖卸荷后应力变化复杂等特点,研制RXZJ-20000型微机伺服控制岩体真三轴现场蠕变试验系统。详细介绍该系统的主要结构、功能特点及使用方法。通过工程实践验证,该系统具有高应力、大尺寸、全过程、高精度、高效率、多功能及拆卸安装方便等特点。RXZJ-20000型现场真三轴蠕变系统改变了目前现场蠕变试验设备载荷水平低、压力波动大、测试精度低、应力路径单一、自动化程度不高的状况。该系统的成功研制,为研究深部岩体在多向应力条件下的时效性提供新的手段,是目前国内外最先进的大型现场伺服试验仪器,适用于大型人工边坡、深埋大跨度隧道及地下洞室的坚硬岩体和软岩长期蠕变试验。In light of the characteristics such as complicated stress variation after excavation unloading in high geostress environment, RXZJ - 20000-typed computer servo-control rock mass true-triaxial site creep testing system has been developed. The main structure, function features and usage of the system are introduced in detail. Verified by the actural engineering practice, the system has the following features of high geostress, large size, complete process of stress and strain, high precision, high efficiency, multifunction and convenient for removing and installation. The system has changed the status that true-triaxial site creep test equipment has a low loading level, big pressure fluctuations, low test precision, single stress path and low degree of automation at present. The successful manufacture of the RXZJ - 20000-typed rock mass true-triaxial site creep test system provides a new way to the study of the time-effect of deep rock under the condition of multiaxial stress; and it is the most advanced larger servo test instrument at home and aboard. It is suitable for long-term creep test of the hard and soft rock masses of large-scale artificial slope, deep large-span tunnel and underground caverns.

关 键 词：岩石力学 岩体真三轴现场蠕变试验系统 高应力 伺服控制与自动采集 岩体时效性 

分 类 号：TU45[建筑科学—岩土工程]