严寒地区路堑边坡破坏机理及稳定计算分析

Failure mechanism of highway slope in severe cold area and its stability computation analysis

内蒙古省际通道新林北至扎兰屯段一级公路修建过程中,一些局部路堑边坡出现了较严重的边坡滑塌现象。目前公路行业的路基设计施工规范中尚没有涉及高寒地区路堑边坡的设计施工方法,也缺乏此类地区路堑边坡的稳定性设计评价标准。为此在进行了大量调研工作的基础上,对路堑边坡的破坏机理进行了分析,提出了确保公路路堑边坡稳定的有效措施及相应的计算方法,成果可为其他类似工程借鉴参考。

During constructing the first class interprovincial road from the north Xinlin to Zhalantun in Inner Mongolia Autonomous Region,serious slope slide and collapse occurred at several places along the road.The current professional codes for road design and construction have not involved the road design and construction methods in frozen area at high latitude.Furthermore,little information can be found for reference.Based on the data collected from large scale investigation,the failure mechanism of the slope in this area is analyzed.Combined with the demonstrating project,the reliable construction procedure is suggested;and the corresponding calculation methods are presented.The research achievement can be for reference in designing and constructing roads in similar circumstance.