隧道口滑坡的影响因素和处理措施浅析

Analyses of Influencing Factors of Landslide at Tunnel Portal and Its Treatment Measures

研究目的:本文对隧道口滑坡的影响因素和处理措施进行探讨,解决有效控制滑坡体滑坡的处理措施。研究结论:滑坡带在水的作用下抗滑力减小,隧道口人工开挖或爆破是造成滑坡的主要原因。滑坡体经过地表排水、喷射混凝土,在隧道开挖前修筑重力式挡土墙,超前进行管棚预注浆,在隧道施工中使用钢支撑、注浆锚杆、固结灌浆、衬砌等处理措施,可有效控制滑坡体滑坡。

Research purposes： The discussion is made in this paper on the influencing factors of landslide at tunnel portal and its treatment measure for the purpose of effect control of the landslide at tunnel portal. Research conclusions：The main causes for the landslide are decrease of the antiskid capacity of slides zone under the action of water, manual excavation of the tunnel open or blasting. The landslide can be controlled effectively by taking relative measures, such as surface drainage, jetting concrete, construction of gravity retaining wall before the tunnel excavation, adopting pipe - shed grouting in advance, steel structure, grouting anchored bar, consolidation grouting and lining.