中文摘要：

为了研究深部隧（巷）道围岩稳定性机理与支护控制技术,以千米埋深为基本条件,考虑三轴六面恒压加载和数字照相量测先进技术的应用,研制了一套结构紧凑、特色鲜明的真三轴框架式大型物理模拟试验系统。该系统由模型加载反力框架、以扁油缸与真空回油为特色的液压加载控制系统、自行研制的数字照相变形量测与围岩应力测试系统和开挖支护辅助装置4部分组成,可用于长1000 mm×宽1000 mm×厚1000 mm的深部隧（巷）道大型物理相似模型试验研究。最后给出在深部矿山巷道围岩变形受力观测分析与围岩分区破裂化现象再现试验的应用实例。应用结果表明,本套试验系统对于研究包括矿山巷道、TBM隧道在内的深部隧（巷）道工程开挖与支护过程中围岩变形与应力分布规律及其稳定控制作用机理都具有重要价值。

英文摘要：

A large-scale physical model test system with true triaxial loading unit and digital photogrammetry is developed. Using this test system, it is possible to study the stability of rock mass and support control technology for the deep rock tunnel with an overburden of over 1000 m. The test system consists of a reaction frame, a hydraulic control unit with oil-driven actuators and vacuum oil feed-back pump, a deformation and stress measuring unit with self-developed digital photogrammetric technology and stress measuring method, and tunnel excavation and support instruments. Large-scale model with a size of 1000 mm×1000 mm×1000 mm can be used in this test system. Two model tests are presented. One is analyzing the deformation and stress distribution of a deeply buried tunnel. The other is reproducing a local fracture phenomenon. The test results show that the test system is useful for investigating the deformation and fracture laws of deeply buried tunnels such as mining roadways and TBM tunnels during excavation and supporting, and the mechanism of stability control for surrounding rock masses.