隧道洞门区水土流失机理分析与水土保持技术  

Analysis of Soil and Water Loss Mechanism and Soil and Water Conservation Technology in Tunnel Portal Area

作　　者：王艺洁 Wang Yijie(Guangxi Branch of China National Geological Exploration Center of Building Materials Industry,Guilin,China)

机构地区：[1]中国建筑材料工业地质勘查中心广西总队,广西桂林

出　　处：《科学技术创新》2025年第3期137-140,共4页Scientific and Technological Innovation

摘　　要：本文以某隧道工程为例,探究了隧道洞门区的水土流失机理,并提出了水土保持措施。结合现场调查情况,分析认为隧道洞门区水土流失主要与水力侵蚀和重力侵蚀有关。在此基础上基于永临结合、重点治理与全局治理结合原则提出了水土保持方案。该方案共包含三部分,工程措施方面采取了设置坡顶截水沟、表土剥离和覆土整理措施;植物措施方面采取了客土喷播植草技术;临时措施方面设置了临时排水沟、临时沉砂池和临时挡土墙。通过综合采取水土保持技术,切实提高了隧道洞门区的蓄水保土能力。Taking a certain tunnel project as an example,this article explores the mechanism of soil erosion in the tunnel entrance area and proposes soil and water conservation measures.Based on the on-site investigation,it is analyzed that the soil erosion in the tunnel entrance area is mainly related to hydraulic erosion and gravity erosion.On this basis,a soil and water conservation plan was proposed based on the principles of combining permanent and temporary management,key governance,and overall governance.This plan consists of three parts.In terms of engineering measures,measures have been taken such as setting up interception ditches at the top of the slope,stripping topsoil,and tidying up the soil cover;In terms of plant measures,the technique of spraying and planting grass with foreign soil has been adopted;In terms of temporary measures,temporary drainage ditches,temporary sedimentation tanks,and temporary retaining walls have been set up.By adopting comprehensive soil and water conservation techniques,the water and soil retention capacity of the tunnel entrance area has been effectively improved.

关 键 词：水土流失 隧道洞门 植草护坡 水土保持 

分 类 号：U451[建筑科学—桥梁与隧道工程]