川藏公路中坝段溜砂坡形成与防治对策

溜砂坡是斜坡重力侵蚀的一种特殊类型，在特定的地形、地质和气候条件下形成和演化而成的。常对公路、铁路、渠道等线路工程构成严重危害。论文以川藏公路(318国道)西藏境内中坝段为例，从溜砂坡的基本特征、形成与分布规律研究入手，通过现场调查、测试和室内模型试验，研究溜砂坡的形成机理、运动力学特征与防治对策。建立了溜砂坡形成、发生、运动力学模型。提出了封闭砂源区、改变砂坡结构、公路内侧修建挡砂工程和坡面生态快速固砂的防治对策。

The formation of sand-sliding slope and its controlling countermeasure for Zhongba section of Sichuan-Tibet Highway

Sand\|sliding slope is a special kind of gravitational erosion,which occurs under the given conditions of landform,geology and climate,and it usually endangers severely to road,railway and channel.By the way of spot survey,laboratory test and room model the paper selects the Sichuan\|Tibet Highway as an example and start with basic feature,formation and distributing laws to study sand\|sliding slope and control countermeasure,and built up sand\|sliding model related to mechanisms of forming,occurence and movement.The paper puts forward all\|round controlling methods through chosing source of sand,changing the structure of sand\|slope,constructing sand\|blocked project inside road and biologic measures to protect the Highway.