人民长江2016，Vol.47Issue(13)：48-51,92,5.DOI:10.16232/j.cnki.1001-4179.2016.11.011
深切河谷初始地应力特点及其对地下工程的影响
Characteristics of initial ground stress field of deep valley and its influence on underground projects
摘要
Abstract
The initial ground stress would be impacted by mountain slope in the construction of underground project in alpine and gorge area.The initial ground stress distribution in typical vertical and horizontal profiles of mountain with slope of 30°,45° and 60°were studied under the gravity field and tectonic stress field by numerical analysis.The conclusions are as follows:at the same elevation,the ground stress increases at first and decreases then,and the distribution conforms to a Hump shape distribu-tion;the plastic zone enlarges as the distance of the cavern to the slope toe decreases,which is adverse to stability of round rock mass;For ground stress study in gorge area,the tectonic stress should be taken into account as well as the gravity stress;Due to unloading and weathering effect in the formation process of gorges,the tectonic action is strong at valley bottom and stress concen-tration occurs.关键词
地应力/节理岩体本构模型/损伤演化方程/地下洞室/山坡坡度Key words
ground stress/joint -rock mass constitutive model/damage evolution equations/underground cavern/mountain slope分类
天文与地球科学引用本文复制引用
李超,朱维申,徐翔,张敦福,余大军..深切河谷初始地应力特点及其对地下工程的影响[J].人民长江,2016,47(13):48-51,92,5.基金项目
国家自然科学基金资助项目 （）
