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借助有限元软件ANSYS对软岩巷道交岔点的稳定性进行数值模拟分析,研究巷道交岔点的应力场及应力集中系数、收敛变形等变化规律以及软岩巷道交岔点围岩的破坏特性,对其进行稳定性评价。研究认为,软岩巷道交岔点处应力集中系数远高于其他部位的应力集中系数,其中锐角侧应力集中程度较高,容易出现稳定性问题。交岔点的收敛变形以顶板变形为主,故顶板的稳定性较差,软岩巷道交岔点两帮和拱肩是巷道的薄弱部位,稳定性较差。
The finite element software ANSYS is used to analyze the stability of the intersection of soft rock roadway. The stress field, stress concentration factor, convergence and deformation of the roadway intersection and the failure characteristics of surrounding rock of the intersection of soft rock roadway are studied. , Its stability evaluation. The study shows that the stress concentration coefficient at the intersection of soft rock roadway is much higher than that of other parts, and the stress concentration is more acute at the acute angle, which leads to the stability problem. The convergence and deformation of the intersection point is mainly the roof deformation, so the stability of the roof is poor. The two sides of the soft rock roadway intersection and the arch shoulder are the weak parts of the roadway, and the stability is poor.