Experimental research on deformation failure process of roadway tunnel in fractured rock mass induced by mining excavation.
Experimental research on deformation failure process of roadway tunnel in fractured rock mass induced by mining excavation.
复制标题
破碎岩体巷道巷道开挖变形破坏过程试验研究
DOI：
10.1007/s12665-022-10364-2
复制
发表时间：
2022
影响因子：
2.8
通讯作者：
Zhao, Haijun
中科院分区：
文献类型：
--
作者：
Li, Guang;Ma, Fengshan;Guo, Jie;Zhao, Haijun
裂隙岩体巷道变形破坏可导致大体积坍塌等工程事故。裂隙岩体的破坏机理复杂且知之甚少，为此，采用物理模型试验与数值计算相结合的方法对裂隙岩体进行了模拟。采用混合灌砖法和巷道掘进装置，建立了一套节理围岩下巷道掘进试验技术，可再现原型结构特征和巷道掘进条件。通过应变监测和图像采集，获得了巷道从加载到开挖的应力分布特征，详细描述了巷道变形破坏过程。通过数值模拟研究了不同开挖条件下巷道的变形破坏机理。结果表明，巷道的变形破坏模式，包括塌陷，岩爆，底鼓是相似的，无论深度。巷道变形破坏模式由岩体结构决定，变形强度由地应力决定。模型试验与数值模拟结果一致，为裂隙岩体巷道工程提供了理论依据和技术指导。
Deformation failure of roadways in fractured rock can lead to large-volume collapse and other engineering accidents. Failure mechanisms in fractured rock are complex and poorly understood, so to explore this issue, we simulated fractured rock masses using physical model tests in combination with numerical computations. A set of experimental techniques for roadway excavation under jointed surrounding rock included a mixed pouring–bricking method and a roadway excavation device, which can reproduce the structural characteristics of the prototype and replicate the excavation conditions of the roadway. Stress distribution characteristics of the roadway, from loading to excavation, were obtained based on strain monitoring and image acquisition, and the process of roadway deformation and failure was described in detail. A series of numerical simulations were conducted to investigate the deformation failure mechanisms of roadways under different excavation conditions. Results indicate that the deformation failure modes of roadways including collapse, rock burst, and floor heaving that were similar regardless of depth. Deformation failure modes of the roadway were determined by rock mass structure, and the deformation intensity was determined by geo-stress. Model testing and numerical simulation were consistent; hence, findings provide a theoretical basis and technical guidance for roadway engineering in fractured rock masses.
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DOI：
10.1016/s1365-1609(02)00041-2
发表时间：
2002-06-01
影响因子：
7.2
作者：
Fakhimi, A;Carvalho, F;Labuz, JF
通讯作者：
Labuz, JF
我国三个金属矿山矿井沉陷监测与统计分析
DOI：
10.1007/s10064-018-1367-6
发表时间：
2019-09-01
影响因子：
4.2
作者：
Hui, Xin;Ma, Fengshan;Xu, Jiamo
通讯作者：
Xu, Jiamo
影响因子：
2.8
作者：
Wang, Xiao;Tian, Long-gang
通讯作者：
Tian, Long-gang
深部软岩巷道变形破坏机理及支护技术研究
影响因子：
7.4
作者：
Li, Guang;Ma, Fengshan;Liu, Gang
通讯作者：
Liu, Gang
深部厚顶煤巷道围岩变形破坏机制模型试验研究
影响因子：
6.9
作者：
Li, S. C.;Wang, Q.;Ruan, G. Q.
通讯作者：
Ruan, G. Q.