摘要
热融滑塌是多年冻土地区广泛发育的低角度热融灾害,对青藏高速公路的选线、勘察、设计、施工和运营均有较大的影响。基于青藏工程走廊热融滑塌灾害的地调数据,该文开展了青藏高速公路沿线典型热融滑塌灾害勘设要点与工程处治措施的研究。结果表明:基于运动方式可以将热融滑塌划分为坍塌沉陷式和牵引滑动式两类,其形成过程归结于质点迁移效应和滞水润滑效应;严禁对热融滑塌区域进行扰动,可以结合遥感、无人机以及地球物理技术进行综合勘查。与此同时,在设计阶段应根据热融滑塌的类型开展相应的绕避、架空以及排水等工程措施研究;对热融滑塌的处治宜采用综合防治体系,并加强对灾害的监测与预报。
Thaw slumping is a low-angle thermal hazards that widely develops in permafrost areas and has a great impact on the route selection,survey,design,construction and operation of the Qinghai-Tibet Expressway.Based on the geological survey data of thaw slumping in the Qinghai-Tibet Engineering Corridor,the main points of reconnaissance,design and engineering treatment measures of typical thaw slumping along the Qinghai-Tibet Expressway were carried out in this paper.The results showed that the thaw slumping can be divided into collapse subsidence type and traction sliding type according motion mode.The formation process was attributed to particle migration effect and stagnant water lubrication effect.Disturbance was strictly prohibited in the investigation of thermal collapse,so remote sensing,UAV and integrated geophysical survey techniques could be used.At the same time,technical measures of avoidance,overhead and drainage should be carried out in design stage according to the different types of thaw slumping.Comprehensive control system should be adopted for the thaw slumping treatment,and monitoring and prediction should be strengthened.
作者
彭惠
董元宏
邵广军
胡玉璞
曾良诚
马卫卫
PENG Hui;DONG Yuanhong;SHAO Guangjun;HU Yupu;ZENG Liangcheng;MA Weiwei(CCCC First Highway Consultants Co.,LTD,State Key Laboratory of Road Engineering Safety and Health in Cold and High-Altitude Regions,Xi'an 710065,China;Xijing University,Shaanxi Key Laboratory for Safety and Durability of Concrete Structures,Xi'an 710123,China)
出处
《灾害学》
CSCD
北大核心
2019年第A01期72-76,共5页
Journal of Catastrophology
基金
陕西省创新能力支撑计划-青年科技新星项目(2017KJXX-25,2017KJXX-26,2018KJXX-33,2019KJXX-93,2018KJXX-057)
陕西省自然科学基础研究计划(2017ZDJC-24)
中国交建集团创新平台建设应用基础研究项目(2018-ZJKJ-PTJS03)
关键词
青藏高速公路
热融滑塌
质点迁移
滞水润滑
综合防治体系
Qinghai-Tibet Expressway
thaw slumping
particle migration
stagnant water lubrication
comprehensive control system
