The fundamental force leading to the failure of surrounding rock is the stress re-distribution caused by tunnel excavation, and stress concentration.
隧洞开挖引起的围岩应力重新分布和应力集中是导致围岩失稳破坏的根本作用力。
Theoretical analysis shows that the progressive failure of the surrounding rock of opening is mainly caused by strength attenuation and creep mass.
理论分析说明，巷道围岩的渐进破坏主要是岩体强度衰减和蠕变性质影响的结果。
During the initial excavation, the tender coal seam workings in deep seam in Nantun Colliery takes on slocking of roof, with breaking-out in bulk coal and surrounding rock failure.
南屯煤矿深部松软煤层巷道，在掘进过程中顶板破碎，伴有大量顶煤冒落且围岩破坏严重。
The failure of brickwork roadway is mainly caused by the contacting relation of support and surrounding rock and inadequate deformation of support .
砌碹巷道破坏的主要原因是由于支护-围岩接触关系不能适应巷道变形特性造成。
The limit displacements of tunnelling is influenced by surrounding rock, tunnelling size and shape, supported structure form and thickness, constructing method and failure form.
隧道的极限位移不仅与围岩类别有关，还与洞室大小、形状、支护形式、支护厚度、施工方法和破坏状态等因素有关。
Finally, creep failure mechanism of surrounding rock in deep mining is analyzed by stress difference theory.
并利用应力差理论分析了深部巷道围岩的蠕变破坏机理。
The energy criteria have been applied to analyzing the failure condition of surrounding rock masses of a circular tunnel in practice.
并应用上述准则讨论了隧洞围岩发生整体破坏的临界条件。
With site investigation and observation as well as similar material model test, the paper analyzes the surrounding rock deformation and failure characteristics of roadways in high pitched seam.
通过现场调查、观测及实验室相似材料模型实验，分析了大倾角煤层巷道围岩的变形和破坏特征。
The equilibrium equation of surrounding rock mining fault system is established. The fault destablizing process with shear failure pattern belongs to fold catastrophe model.
建立了矿井围岩-断层系统的准静态形变平衡方程，将呈剪切破裂形式的断层失稳过程归结为折迭突变模型。
Unsupported floor as the main releasing channel for deformation and failure energy, has intensified the whole subsidence of roof surrounding rock.
无支护底板作为变形破坏能量主要释放通道，加剧了巷道顶帮围岩整体下沉。
Based on the measured results and field survey, the cause of the failure and deformation of the surrounding rock around soft rock laneway in MaLuPing mine are discussed.
根据现场调查和实测结果，分析了马路坪矿软岩巷道围岩变形和破坏的主要原因。
The main factors effecting of slipping area along the bed rock and roof separation and failure area and the major avenue of damage surrounding rock caused by mining are analyzed in this paper.
分析了影响沿底座滑区和顶板离层破坏区破坏的主要因素及其采动损害传递的主途径。
The surrounding rock between tunnel and karst cave possibly brings large deformation and rock mass failure because of stress concentration, and its stability is focused seriously.
隧道与溶洞之间的围岩由于应力集中可能使围岩产生过大的变形和岩体破坏，对其稳定性要给予特别重视。
It is important for reinforcement of surrounding rock mass to study the strength and failure modes of the rock mass with persistent cracks.
研究贯穿裂隙岩体的强度及其破坏方式对于围岩加固等具有重要意义。
Therefore, it is necessary to specially research the optimization for support structure of tunnel and failure probability analysis for tunnel surrounding rock deformation.
因此，很有必要对隧道支护优化和围岩变形破坏概率分析进行专门研究。
Therefore, it is necessary to specially research the optimization for support structure of tunnel and failure probability analysis for tunnel surrounding rock deformation.
因此，很有必要对隧道支护优化和围岩变形破坏概率分析进行专门研究。
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