摘要
介绍一种新型岩爆模拟专用气液复合快速补偿加载器的设计原理和技术特征。该加载器采用独特的4腔室气液联合设计,利用蓄能腔压缩气体绝热膨胀来快速补偿试样破坏时加载器的压力突降,使试样发生模拟岩爆。试验表明,加载器具有整体刚度高、操控性好、高速密封稳定可靠等特点,解决了回程腔背压消除,防止气体往液压缸泄露,高速导向密封关键问题,能够较好地实现单轴加载条件下试样不同烈度等级的岩爆过程模拟。另外,分析探讨加载器下一步应深入研究和解决的一些问题。
A special gas-liquid composite fast-compensating loader for rockburst simulation is developed,and its design principles and technical characteristics are introduced. The loader which has four cavities simulates rockburst by using adiabatic expansion of compressed gas in energy storage cavity for fast-compensating pressure fall at failure of sample. Result shows that the loader has good capability in high rigidity,stable operation performance and reliable high-speed sealing. The key issues could be solved including eliminating back pressure in return cavity,preventing gas from getting into hydraulic cavity and sealing high-speed guide. It can realize rockburst modeling in different intensity degree under the condition of uniaxial loading. Moreover,some issues of loader in further study are discussed.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2014年第S1期3177-3184,共8页
Chinese Journal of Rock Mechanics and Engineering
关键词
岩石力学
岩爆模拟
冲击地压
气液复合
高速密封
加载装置
rock mechanics
rockburst simulation
rockburst
gas-liquid composite
high-speed sealing
loader
