摘要
吴砦古城是一座"悬崖上的抗金古城"[1],有着悠久的历史文化,为加强古城文物古迹的保护,同时为了确保受古城高边坡威胁的居民的安全,利用基于有限元法的Madis GTS软件中的强度折减法,选取古城高边坡的典型地质剖面,在室内土工试验获取高边坡土体力学参数的基础上,通过高边坡稳定性抗剪强度参数反演,确定了卵石土的重度、粘聚力和内摩擦角等参数,进行了吴砦古城高边坡稳定性定量分析,经计算确定高边坡处欠稳定状态,并通过最大剪应变和有效塑性应变云图确定了潜在滑动面位置,为该高边坡的治理设计提供了有效数据,为治理方案的抉择提供了有力证据。
Wuzhai ancient city is a 'on the cliff of the ancient city of gold'[1], has a long history and culture, and in order to strengthening the protection of cultural relics in the ancient city of wuzhai, at the same time in order to ensure the safety of the residents under the threat of the ancient city of high slope, based on the finite element method(FEM) of Madis GTS software strength subtraction, in the selection of the ancient city of typical geological section of high slope, the indoor geotechnical tests for high slope of soil mechanical parameters, on the basis of through high slope stability of shear strength parameters inversion, determine the pebble soil parameters such as severe, cohesive force and internal friction Angle, the ancient city of wuzhai high slope stability of quantitative analysis, The understable state of the high slope is determined by calculation, and the position of the potential sliding surface is determined by the cloud chart of maximum shear strain and effective plastic strain, which provides effective data for the treatment design of the high slope and strong evidence for the choice of treatment scheme.
作者
康白冰
王延寿
张亚军
Kang Baibing;Wang Yanshou;Zhang Yajun(Tianshui Institute of Geology and Mineral Resources,Gansu Buerau of Geology and Exploration of Non-Ferrous Metals,Tianshui Gansu 741020,China)
出处
《环境与发展》
2019年第3期249-251,共3页
Environment & Development
关键词
高边坡
边坡稳定性
强度折减法
有限元法
古城
High slope
Slope stability
Strength reduction method
Finite element method
Ancient city
