This paper introduces a new high-pressure servo true triaxial rockburst experimental apparatus that can realize multi-face rapid unloading in the horizontal direction. The apparatus is used to simulate different types of strain burst phenomena in deep underground engineering, such as those at roadways, roadway intersections, and pillars with three and four free faces. In the research and development process, apparatus technologies were included to overcome five key challenges: rapid unloading under high pressure, loading gap removal fixture, three-way loading alignment, symmetrical loading, and system stability after unloading. The apparatus is used to carry out multi-face unloading strain burst experiments and can fully satisfy the experimental requirements. The entire strain burst process is recorded using a high-speed camera. The apparatus can provide experimental support for strain burst mechanism research and an experimental basis for different types of strain burst research.

中文翻译：

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一种用于模拟高应力下应变爆发的新型真三轴仪

介绍了一种新型高压伺服真三轴岩爆实验装置，可实现水平方向多面快速卸荷。该装置用于模拟深部地下工程中不同类型的应变爆裂现象，如巷道、巷道交叉口、三、四自由面立柱等。在研发过程中，采用了装置技术，克服了高压下快速卸载、装载间隙去除夹具、三向装载对齐、对称装载和卸载后系统稳定性五个关键挑战。该装置用于进行多面卸载应变爆裂实验，完全可以满足实验要求。使用高速摄像机记录整个应变爆发过程。