木寨岭隧道大坪斜井软岩大变形原因分析及施工技术

Technology for Control of Large Deformation of Daping Inclined Shaft of Muzhailing Tunnel in Soft Ground

介绍木寨岭隧道大坪斜井出现的碳质板岩段大变形情况,以及大变形发生和发展规律。从几个主要方面分析产生变形的原因,并得出产生大变形的主因和诱因。在实际施工中,结合研究成果提出针对大变形段的建议治理措施,对该斜井大变形的及时处理和控制效果起到了较好的效果。

The large deformation of Daping inclined shaft of Muzhailing tunnel in carbonaceous slate ground is presented. The rule of the large deformation is described. The causes for the large deformation are analyzed in terms of main causes and occasional causes. Countermeasures are proposed on basis of the study results in the construction and satisfactory effects are achieved.