期刊名称：International Journal of Advances in Engineering and Management
电子版ISSN：2395-5252
出版年度：2022
卷号：4
期号：2
页码：894-899
DOI：10.35629/5252-0402705718
语种：English
出版社：IJAEM JOURNAL
摘要：Based on the surrounding rock strength criterion, by establishing a medium rock wall stress model, a discriminant formula for the stability of the rock wall in an asymmetric small clearance tunnel is proposed, and the influence of different factors on the ultimate bearing capacity of the medium rock wall is analyzed. The results show that: The ultimate bearing capacity of the middle rock wall increases linearly with the increase of the tunnel burial depth and the prestress of the anchor rod; when the anchor rod is laid on the middle rock wall, the density of the anchor rod should be controlled to ensure that the bearing capacity is significantly improved; The increase of the ultimate bearing capacity of the middle rock wall is related to its own cohesion.
关键词：asymmetric small clear - distance tunnel;medium rock wall;stability criterion;ultimate bearing capacity
