深部隧道框架式真三轴物理试验系统研制与应用

李元海; 靖洪文; 陈坤福; 贾冉旭

doi:10.11779/CJGE201601003

深部隧道框架式真三轴物理试验系统研制与应用 English Version

李元海^{1, 2},
靖洪文^{1, 2},
陈坤福²,
贾冉旭²

1. 中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州 221116;
2. 中国矿业大学力学与建筑工程学院,江苏徐州 221116

基金项目: 国家重点基础研究发展计划（“973”计划）项目（2014CB046905,2013CB036003）; 国家自然科学基金项目（51174197）; 江苏省高校

详细信息

作者简介:
李元海(1969-),男,博士,教授,主要从事岩土工程数字照相量测技术与应用以及地下工程安全分析与稳定性控制机理等方面的研究工作。

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出版历程
- 收稿日期: 2014-12-11
- 发布日期: 2016-01-19

Development and applications of physical model test system with true triaxial loading unit for deep tunnels or roadways

1. State Key Laboratory for Geomechanics &
Deep Underground Engineering, Xuzhou 221116, China;
2. School of Mechanics &
Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China

摘要

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。
- 深部隧道 /
- 试验系统 /
- 数字照相量测 /
- 围岩变形 /
- PhotoInfor
Abstract: 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.
- deep tunnel /
- experimental system /
- digital photogrammetry /
- surrounding rock deformation /
- PhotoInfor

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