摘要
基于现有的岩石断裂力学和细观损伤力学,在引用裂纹尖端损伤局部化模型,考虑煤体的远场应力、煤体注水压力及局部损伤带内应力作用的前提下,分析了裂纹尖端应力分布,对水力作用下煤体裂纹尖端损伤局部化、裂纹扩展的基本条件及裂纹扩展的方向进行了理论分析与探讨。
Based on existing rock fracture mechanics and meso-damage mechanics, the model of damage localization at the crack tip was quoted, and the strata stress, water pressure and damage localization stress were considered, the distribution of crack tip was discussed, the damage localization at crack tip of coal, the criterion of crack development and the direction of expanding were analyzed and discussed under water pressure.
