【作者】 金仁祥； 尚岳全； 孙红月；

【Author】 JIN Ren-xiang SHANG Yue-quan SUN Hong-yue (College of Architecture & Civil Engineering,Zhejiang University,Hangzhou 310027,China)

【机构】 浙江大学建工学院；

【摘要】 溜砂是一种特殊的坡面破坏与堆积形式,它是陡峭坡面基岩上寒冻风化形成的砂粒、碎石或者砂砾夹石块在重力作用下沿斜坡滚动,溜动与堆积的过程。主要发生在川藏公路西藏境内沿线较为干旱的花岗岩山区,因其稳定性差,溜砂活动较为频繁,成为造成该公路断通的重要灾害之一。文章针对青藏高原处于大规模抬升阶段、斜坡不断生长的地貌特征,提出了溜砂坡新的成因分类方案,分析了溜砂坡的形成条件,对溜砂坡的工程防治进行论述,提出了目前条件下生长型溜砂坡合理的防治对策,对确保川藏公路的畅通有指导意义。更多还原

【Abstract】 Sand sliding is a special form of destruction and accumulation of slope surface.It is formed by weathered rock granule anddebris,which roll and slide under the influences of gravity,and accumulate at the toe of the slope.The sand-sliding movementhappens mainly in the arid granite mountainous area along the Sichuan-Xizang Highway within the bounds of Xizang.Becauseof its weak stability,the frequent sand-sliding movement becomes one of the most important hazards influencing the traffic safe-ty along the Highway.A new classification system of sand-slides slope is suggested in this paper,which focuses on the topo-graphic features of large scale uplifting of the Qinghai-Xizang Plateau and the growing characteristics of the slopes.On the basisof the forming mechanism and dynamics characteristics,this paper gives many comments on the remedial measures of sand-slid-ing slope in order to select an appropriate measure to protect the highway.更多还原