基于某中小河流项目治理断面形式的应用分析

由金玉 张磊 李增永

【摘  要】当前，河道综合治理断面形式主要有梯形、矩形、复合式这三种断面，护坡方式主要是混凝土、砌石、石笼、土工植生袋、草皮这五种护坡方式。论文以某河道治理工程项目为例，对比矩形断面重力式挡墙防洪堤与复合式断面宾格石笼+草皮护坡工程的应用。研究表明：采用复合式断面宾格石笼+草皮护坡更适合本工程，有利于降低工程造价、实现绿色生态、结构合理。采用瑞典条分法对其三种工况进行稳定性计算，表明设计中选定的防洪堤断面形式合理。

【Abstract】At present， the cross-section forms of river course comprehensive treatment mainly include trapezoidal， rectangular， composite type of these three cross-sections. The five main types of slope protection methods are concrete， masonry， gabions， geotechnical vegetation bags and turf. The paper takes a treatment engineering project of river course as an example and compares the application of gravity retaining wall levee of rectangular cross-section and binge gabion + turf slope protection engineering of composite cross-section. The study shows that the use of binge gabion + turf slope protection engineering of composite cross-section is more suitable for this engineering， which is conducive to reducing the engineering cost， achieving green ecology and reasonable structure. The paper uses the Swedish slice method to calculate the stability of its three working conditions and shows that the selected levee cross-section form in the design is reasonable.

【关键词】河道;综合治理;断面形式;生态护坡

【Keywords】river course; comprehensive treatment; cross-section forms; ecological slope protection

【中图分类号】TV85                                             【文献标志码】A                                                 【文章編号】1673-1069（2021）02-0180-02

1 引言

近年来实施的河道综合治理项目取得了较好的防洪效益和生态效益，有效保护了河道两岸的群众的生命财产安全。河道治理选定防洪标准、堤线、河道断面、护坡形式及施工工艺，常采用的断面形式有：梯形断面、矩形断面、复式断面，护坡方式主要有：混凝土、砌石、石笼、土工植生袋、草皮护坡等，选取一种合适的断面及护坡方式既能提升治理效果，又能降低工程造价，对防洪与水生态具有重要意义[1，2]。我国学者对河道治理开展了大量研究：侯裕清[3]对烟台河干流河道断面形式进行了探讨;赵春会等[4]以新河为例分析了河道断面形式和河道护坡材料的选取;曹骏[5]分析了锦屏县城区河道堤防的设计;刘贵琪等[6]对河道治理中遇到的问题进行了探讨;黄惠玲[7]研究了河道治理中生态修复机制。……