摘要
通过对南(宁)友(谊关)高速公路宁明下第三系湖相风化泥岩及其残积土路堑边坡的系统地质调查、现场监测,对比研究了膨胀土自然边坡和路堑边坡胀缩活动带的含水率、地温、收缩系数及50 kPa下膨胀量随深度的变化特征,结合对边坡胀缩裂隙与滑坡体形态要素的相关性分析,提出了胀缩活动带滑坡的半定量破坏模式,为有效进行工程处治提供了依据。
Through geological investigation and field monitoring of Ningming tertiaryi limnic weathered mudstone and residual soil cut slopes of Nanning-Youviguan, Express the characteristics of water content, temperature, shrinking coefficient, swelling quantity variation under 50 kPa with depth of natural slopes and cut slopes in swell and shrinking active zone of expansive soil were studied. In connection with the correlation analysis between swell and shrinking fissure of slopes and behavior of landslides, a half-quantitative failure model for landslides of swell ＆ shrinking active zones was proposed. It could provide reference to effective engineering treatment.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2008年第1期28-33,共6页
Chinese Journal of Geotechnical Engineering
基金
交通部西部交通科技资助项目(2002-318000)
关键词
膨胀土
路堑
胀缩活动带
破坏模式
expansive soil
cut slope
swell and shrinking active zone
failure mechanism
