摘要
以发育于青藏高原多年冻土区平缓斜坡上的两处热融滑塌为例 ,研究了热融滑塌发育的斜坡地质、冻土条件及变形特征。该类滑坡扩展范围、滑动速率、土体含水量的变化随气温变化及斜坡坡向的不同存在着差异 ,滑坡产生的根本原因在于高含冰量冻土的存在及斜坡开挖影响 ,对热融滑塌的工程治理应从保护冻土的原则出发选择措施 ,还需注意设置良好的隔水、排水措施。
Thaw slumping existing on two slopes in the permafrost region of Qinghai-Tibet Plateau are studied with their geological, frozen soil conditions and deformations. The extending area, the sliding velocity and the water content of soil strikingly change with the air temperature and slope aspect. The dominant causing factors of this kind of slope instability are ice-rich frozen soil and slope-cut. Engineering measures should be based on principle of protecting permafrost, and attention should be paid to ground water drainage too.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2004年第3期402-406,共5页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金资助项目 (50 0 0 80 1 6
40 2 2 50 0 1 )
中国科学院"西部之光"人才培养计划项目
中国科学院知识创新工程重大项目 (KZCX1 -SW - 0 4 )
