尾矿渣路基包边土厚度研究  

Study on the Thickness of Tailing Roadbed Surrounding Soil

作　　者：崔洪海 姜伟强 CUI Honghai;JIANG Weiqiang(Jilin Provincial Communications Planning and Design Institute,Changchun 130021,China;School of Transportation Science and Engineering,Harbin Institute of Technology,Harbin 150090,China)

机构地区：[1]吉林省交通规划设计院,长春130021 [2]哈尔滨工业大学交通科学与工程学院,哈尔滨150090

出　　处：《路基工程》2018年第A01期55-59,共5页Subgrade Engineering

基　　金："十二五"科技支撑计划(2014BAC07B00);吉林省交通运输科研项目:铁尾矿在季冻区公路建设中应用关键技术研究(2017ZDGC-1)

摘　　要：结合鹤大高速公路及辉白高速公路利用铁尾矿渣填筑路基实践应用过程中,针对尾矿渣路基包边土的厚度选取的问题,采用数值模拟的方法,以comsol软件建立了有限元简化模型,改变包边土的厚度,分析其变化对应于尾矿渣路基竖向应力、沉降以及路基结构稳定性的影响规律。结果表明:包边土的厚度变化对于路基的竖向应力以及沉降的影响程度较小,路基填高的变化反而对应力及位移影响程度较大;此外,低填方路基的包边土厚度对抗滑稳定性影响较小,而高填方路基的包边土厚度为1. 0~1. 5 m时,出现KS小于规范值,存在潜在的滑动破坏。Based on Hegang-Dalian Highway and Huinan-Baishan Highway,during the practical application of tailing filling roadbed,targeted at thickness selection of tailing roadbed surrounding soil,the finite element simplified model was established with comsol software using numerical simulation method to change the thickness of surrounding soil and analyze the influence rule on the vertical stress,settlement and structural stability of the tailing roadbed.The results show that the change of the thickness of surrounding soil has little influence on the vertical stress and settlement of the roadbed.The change of the roadbed filling has large influence on the stress and displacement.In addition,the surrounding soil thickness of low filling roadbed has little influence on the anti-slip stability.When the surrounding soil thickness of the high filling roadbed is 1.0~1.5 m,K S is less than the standard value,existing potential sliding damage.

关 键 词：尾矿渣路基 包边土厚度 数值模拟 力学响应 稳定性 

分 类 号：U416.1[交通运输工程—道路与铁道工程]