基于强度折减法的吴砦古城高边坡稳定性分析

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英文篇名：The stability analysis of Wuzhai Ancient City high slope based on strength reduction method 作者：康白冰 ; 王延寿 ; 张亚军 英文作者：Kang Baibing;Wang Yanshou;Zhang Yajun;Tianshui Institute of Geology and Mineral Resources, Gansu Buerau of Geology and Exploration of Non-Ferrous Metals; 关键词：高边坡 ; 边坡稳定性 ; 强度折减法 ; 有限元法 ; 古城 英文关键词：High slope;;Slope stability;;Strength reduction method;;Finite element method;;Ancient city 中文刊名：NMHB 英文刊名：Environment and Development 机构：甘肃省有色金属地质勘查局天水矿产勘查院; 出版日期：2019-03-28 出版单位：环境与发展 年：2019 期：v.31;No.152 语种：中文; 页：NMHB201903146 页数：3 CN：03 ISSN：15-1369/X 分类号：259-261

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.

引文

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