冬冻春融及路基填筑对高含水滑坡变形的影响分析  

Analysis on Influence of Cycle of Freezing in Winter and Thawing in Spring and Subgrade Filling on Deformation of Landslide with High Moisture

作　　者：周应华 黄林[2] ZHOU Yinghua;HUANG Lin(China Railway Eiju Group Survey and Design Institute Co., Ltd., Chengdu 610031, China;School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China)

机构地区：[1]中铁二局集团勘测设计院有限责任公司,成都610031 [2]西南交通大学土木工程学院,成都610031

出　　处：《路基工程》2019年第3期104-110,共7页Subgrade Engineering

摘　　要：结合麦秀山地区的工程地质特点,运用MIDAS,PHASE2有限元软件,分析了冬冻春融及路基填筑对高含水滑坡稳定性的影响。渗流规律的变化可能会对滑坡的稳定性造成影响;在路基填筑且春融坡面解冻前,整个坡体都是稳定的;路基填筑且春融坡面解冻后,高动水压力形成流土通道诱发滑坡进一步变形;填筑路基将导致坡体发生向下向前的位移。Combined with the engineering geological features of Maixiushan area in Qinghai Province, MIDAS and PHASE2 finite element software were used to analyze the influence of cycle of freezing in winter and thawing in spring and subgrade filling on the stability of landslide with high moisture. The change of seepage law may affect the stability of the landslide. Before the subgrade filling and slope is thawing on the spring, the entire slope is stable;after subgrade filling and slope is thawing on the spring, high dynamic water pressure leads to the formation of flowing soil channels, which induces further deformation of the landslide;Subgrade filling will cause the slope to move downward and forward.

关 键 词：高含水滑坡 冬冻春融 路基填筑 渗流特性 稳定性 

分 类 号：U418.55[交通运输工程—道路与铁道工程]