›› 2018, Vol. 39 ›› Issue (S1): 412-418.doi: 10.16285/j.rsm.2018.0649

• 岩土工程研究 • 上一篇    下一篇

工程荷载作用下缓倾角反倾似层状岩质边坡变形稳定性分析

代仲海1,2,胡再强1,尹小涛3,吴振君3   

  1. 1. 西安理工大学 岩土工程研究所,陕西 西安 710048;2. 深圳地质建设工程公司,广东 深圳 518023; 3. 中国科学院武汉岩土力学研究所 岩土力学与工程国家重点试验室,湖北 武汉 430071
  • 收稿日期:2018-04-18 出版日期:2018-07-20 发布日期:2018-09-02
  • 作者简介:代仲海,男,1984年生,博士研究生,高级工程师,主要从事地基与基础工程、地下洞室稳定性分析等方面的研究工作
  • 基金资助:

    陕西省自然科学基金(No. 2017JM5059);国家自然科学基金(No. 51778609);云南省交通科技项目(No. 云交科教[2017]23号)

Deformation stability analysis of gentle reverse inclined layer-like rock slope under engineering load

DAI Zhong-hai1,2, HU Zai-qiang1, YIN Xiao-tao3, WU Zhen-jun3   

  1. 1. Institute of Geotechnical Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China; 2. Shenzhen Geology Construction Engineering Company, Shenzhen, Guangdong 518023, China; 3. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
  • Received:2018-04-18 Online:2018-07-20 Published:2018-09-02
  • Supported by:

    This work was supported by the Shaanxi Natural Science Foundation Project(2017JM5059), the Natural Science Foundation of China(51778609) and Traffic Science and Technology Project of Yunnan Province([2017]No.23).

摘要: 在反倾层状边坡的破坏机制和稳定性分析方面,由于其稳定性一般较好,系统深入地研究其破坏机制和稳定性的反而不多。以火山岩地层多次火山喷发旋回形成的缓倾角反倾似层状岩质边坡为研究对象,利用有限元分析其位移矢量图,揭示边坡的变形破坏机制和稳定性控制要素,利用极限平衡法、矢量和法,评价其稳定性,利用强度折减法分析塑性区的扩展规律,揭示滑动面发展的时间空间规律,结果表明,(1)类似层状反倾岩质边坡的潜在破坏模式为剪切–张拉破坏,滑面形态表现为近似折线状:顺坡向穿过凝灰岩夹层和强风化岩体,后缘通过陡倾结构面;(2)极限平衡法、矢量和法的边坡稳定性综合评价表明边坡浅层稳定性不满足工程稳定性要求,深层稳定性满足工程稳定性要求,且三维矢量和安全系数大于二维结果,是三维效应造成;(3)塑性区扩展揭示滑面的空间发展序列为滑面4、5、3。文中的技术路线和分析方案可用于缓倾角反倾层状岩质边坡稳定性评价。

关键词: 桥梁荷载, 地震荷载, 矢量和方法, 反倾似层状边坡, 边坡稳定性

Abstract: In the case of reverse inclined layer-like slope failure mechanism and stability analysis, due to the general good stability of the system, the intensive study is not very much in terms of its failure mechanism and stability. A gentle reverse inclined layer-like rock slope formed by several volcanic eruption cycles is introduced, and the tilt of layered rock slope as the research object, based on the finite element analysis of the displacement vector diagram, reveals the slope deformation failure mechanism and stability of the control elements; The stability is evaluated by using limit equilibrium method and vector sum analysis method. Using strength subtraction analysis regularity of plastic zone, it reveals time space law of the development of the slip surface. The results show that: (1) The similar layered rock slope is the tilting of the potential failure mode is shear-tension, sliding surface morphology of approximate folded line, slope through the tuff interlayer and strongly weathered rock mass, the trailing edge passes through the steeply dipping structural surface. (2) The limit equilibrium method and vector sum analysis method of comprehensive evaluation show that the stability of shallow slope stability does not meet the requirements of the engineering stability; stability of deep satisfies the stability requirement; and the safety factor of 3 D vector sum is greater than 2 D; this is caused by 3 D effect. (3) The spatial development sequence of the sliding surface reveal by the expansion of the plastic zone is sliding surface 4, sliding surface 5-3. The technical route and analysis scheme of this paper can be used to evaluate the stability of the gentle reverse inclined rock slope.

Key words: bridge load, seismic load, vector sum analysis method, reverse inclined layer-like slope, slope stability

中图分类号: 

  • TU452

[1] 史振宁, 戚双星, 付宏渊, 曾铃, 何忠明, 方睿敏, . 降雨入渗条件下土质边坡含水率分 布与浅层稳定性研究[J]. 岩土力学, 2020, 41(3): 980-988.
[2] 苏永华, 李诚诚. 强降雨下基于Green-Ampt模型的边坡稳定性分析[J]. 岩土力学, 2020, 41(2): 389-398.
[3] 余 国, 谢谟文, 郑正勤, 覃事河, 杜 岩, . 基于GIS的边坡稳定性计算方法研究[J]. 岩土力学, 2019, 40(4): 1397-1404.
[4] 夏侯云山, 张抒, 唐辉明, 刘晓, 吴琼, . 考虑参数空间变异结构的结构化交叉约束 随机场模拟方法研究[J]. 岩土力学, 2019, 40(12): 4935-4945.
[5] 唐洪祥, 韦文成. 耦合强度各向异性与应变软化的边坡稳定 有限元分析[J]. 岩土力学, 2019, 40(10): 4092-4100.
[6] 秦雨樵,汤 华,冯振洋,尹小涛,王东英, . 基于聚类分析的边坡稳定性研究[J]. , 2018, 39(8): 2977-2983.
[7] 朱彦鹏,杨晓宇,马孝瑞,杨校辉,叶帅华, . 边坡稳定性分析双折减法的几个问题[J]. , 2018, 39(1): 331-338.
[8] 聂治豹,郑 宏,张 谭. 基于强度折减法确定边坡临界滑面的小波变换法[J]. , 2017, 38(6): 1827-1831.
[9] 黄小福,张迎宾,赵兴权,余鹏程,邢 昊,张 珏,陈岩岩,. 地震条件下危岩崩塌运动特性的初步探讨[J]. , 2017, 38(2): 583-592.
[10] 刘振平,杨 波,刘 建,贺怀建,. 基于GRASS GIS与TIN滑动面的边坡三维极限平衡方法研究[J]. , 2017, 38(1): 221-228.
[11] 蒋泽锋 ,朱大勇,. 强降雨条件下具有张裂缝边坡临界滑动场[J]. , 2016, 37(S2): 25-34.
[12] 薛海斌,党发宁,尹小涛,丁卫华,刘海伟,. 非稳定渗流条件下非饱和土质边坡稳定性的矢量和分析法研究[J]. , 2016, 37(S1): 49-56.
[13] 王 双,李小春,石 露,刘召胜,. 物质点强度折减法及其在边坡中的应用[J]. , 2016, 37(9): 2672-2678.
[14] 薛海斌 ,党发宁,尹小涛,雷 曼,杨 超,. 基于动力学和材料软化特性的边坡渐进破坏特征研究[J]. , 2016, 37(8): 2238-2246.
[15] 高如超,李春光,孙 聪,郑 宏,葛修润,. 考虑张剪破坏的边坡下限原理有限元法[J]. , 2016, 37(8): 2426-2432.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!