西藏玉曲河下游岸坡倾倒变形机制及稳定性分析

doi:10.13278/j.cnki.jjuese.20180173

摘要/Abstract

摘要： 西藏玉曲河下游河谷由板岩组成的岸坡普遍发生倾倒变形，其变形特征在青藏高原东南部"三江"地区具有典型性。随着该地区水利水电项目的不断开发，倾倒变形边坡问题日益突出。本文根据在工程实践中遇到的倾倒变形边坡问题，采用现场调查、勘探和原位试验的方法，重点对边坡变形特征与板岩变形特性的相关性进行研究，并分析了3种倾倒类型：倾倒折断型呈脆性破坏，破坏模式主要为由前部向后部逐级后退式破坏，适合采用极限平衡方法进行稳定性分析；倾倒弯曲型属延性变形，破坏模式主要为边坡浅部的坠覆和松驰，适合采用建立在非连续介质模型基础上的应力应变分析方法；倾倒揉皱弯曲型与倾倒弯曲型类似，仅是在倾倒弯曲的基础上叠加了冰川的推覆作用而发生褶曲。

关键词: 倾倒, 变形特征, 成因机制, 稳定性分析, 西藏玉曲河下游

Abstract: The toppling deformation is common in the downstream slopes of Yuqu River in Tibet, and the deformation characteristics are typical in the southeast "three river area" of the Qinghai-Tibet plateau. As the development of hydro projects in this region, the slope toppling deformation is becoming more and more prominent. The correlation of the deformation characteristics of slopes and slates which compose the slopes was mainly studied through field investigation, exploration and field test. Then three types of toppling were analyzed:1) the toppling-broken mode is brittle failure, and the feature is mainly progressive backward failure from the front to the rear, which is suitable for stability analysis by limit equilibrium method; 2) the toppling-bending mode is ductile deformation, and the failure mode is mainly the collapse and relaxation of the shallow part of the slope, which is suitable for the stress analysis based on a discontinuous medium model; 3) the toppling of crumpled mode is similar to the toppling-bending type, which only occurs when the glacier is superimposed on the basis of the toppling-bending.

Key words: toppling, deformation characteristics, genetic mechanism, stability analysis, downstream of Yuqu River in Tibet

中图分类号:

642.2

张丙先. 西藏玉曲河下游岸坡倾倒变形机制及稳定性分析[J]. 吉林大学学报(地球科学版), 2018, 48(5): 1539-1545.

Zhang Bingxian. Deformation Mechanism and Stability Analysis of Bank Slope in Downstream of Yuqu River in Tibet[J]. Journal of Jilin University(Earth Science Edition), 2018, 48(5): 1539-1545.

参考文献

[1] 刘海军,巨能攀,赵建军,等. 层状岩质边坡倾倒变形破坏特征研究[J].合肥工业大学学报(自然科学版),2017,40(6):793-798. Liu Haijun, Ju Nengpan, Zhao Jianjun, et al. Study of Topppling Deformation and Failure Characteristics of Stratified Rock Slope[J]. Journal of Hefei University of Technology(Natural Science), 2017, 40(6):793-798.
[2] 张正清. N江某水电站左岸倾倒岩体成因分析[J]. 资源环境与工程,2015,9(5):574-577,597. Zhang Zhengqing.Toppling Rock Mass:Genetic Analysis and Influence on a Hydropower of River N[J]. Resources Environment & Engineering, 2015, 9(5):574-577,597.
[3] 鲍杰,李渝生,曹广鹏,等. 澜沧江某水电站近坝库岸岩体倾倒变形的成因机制[J]. 地质灾害与环境保护,2011,22(4):47-51. Bao Jie, Li Yusheng, Cao Guangpeng, et al. Genntic Mechanism of the Toppling Deformation Near the Dam of a Hydrpower Station on Lancang River[J].Journal of Geological Hazards and Environment Preservation, 2011, 22(4):47-51.
[4] 张以晨,佴磊,沈世伟,等. 反倾层状岩质边坡倾倒破坏力学模型[J]. 吉林大学学报(地球科学版),2011,41(增刊1):207-213. Zhang Yichen, Nai Lei, Shen Shiwei, et al. Mechanical Models of Anti-Dip Layered Rock Slope Toppling Failure[J]. Journal of Jilin University(Earth Science Edition), 2011, 41(Sup.1):207-213.
[5] 李高勇,刘高,谢裕江. 黄河上游某倾倒体的时效变形研究[J]. 工程地质学报,2013,21(6):835-841. Li Gaoyong, Liu Gao, Xie Yujiang. Time-Dependent Deformation of Toppling Rock Slope on Upper Reach of Yellow River[J]. Journal of Engineering Geology, 2013, 21(6):835-841.
[6] 赵之举,何燕云,赵一桐. 玛尔水电站右岸倾倒体结构特征与稳定分析[J]. 资源环境与工程,2018,32(1):127-130. Zhao Zhiju, He Yanyun, Zhao Yitong. Structure Characteristics and Stability Analysis of Right Bank of the Toppling Mass of Martha Hydropower Station[J]. Resources Environment & Engineering, 2018,32(1):127-130.
[7] 刘昌,王林维,李树武,等. 西南某水电站大型倾倒变形体稳定性评价与处理[J]. 水力发电,2017,43(12):25-27,38. Liu Chang, Wang Linwei, Li Shuwu, et al. Stability Evaluation and Treatment of Large-Scale Toppling Rockmass in a Hydropower Station in Southwest China[J]. Water Power, 2017,43(12):25-27,38.
[8] 肖树芳,杨淑碧. 岩体力学[M]. 北京:地质出版社,1987. Xiao Shufang, Yang Shubi. Rock Mass Mechanics[M]. Beijing:Geological Publishing House,1987.
[9] 蔡美峰,何满潮,刘东燕. 岩石力学与工程[M]. 北京:科学出版社,2002. Cai Meifeng, He Manchao, Liu Dongyan. Rock Mechanics and Engineering[M]. Beijing:Science Press, 2002.
[10] 陈祖煜,汪小刚,杨建,等. 岩质岸坡稳定分析:原理·方法·程序[M]. 北京:中国水利水电出版社,2005. Chen Zuyu, Wang Xiaogang, Yang Jian, et al. Rock Slope Stability Analysis:Theory Methods and Programs[M]. Beijing:China Water & Power Press, 2005.

相关文章 15

[1]	唐贤君, 钟荣全, 陈永军, 何新建, 代勇. 东海盆地西湖凹陷斜坡区平湖断裂带分段性及其成因机制[J]. 吉林大学学报(地球科学版), 2024, 54(6): 2047-2060.
[2]	徐俊杰, 陈松, 刘广宁, 刘道涵, 余绍文. 鄱阳湖湖滨多宝沙山成因机制[J]. 吉林大学学报(地球科学版), 2024, 54(4): 1383-1395.
[3]	宋林珂, 刘四兵, 曾青高, 周栋, 唐大海, 王锦西. 四川盆地川中—川西过渡带中侏罗统沙溪庙组致密砂岩相对优质储层成因机制 [J]. 吉林大学学报(地球科学版), 2024, 54(2): 371-388.
[4]	黄达, 马昊, 石林. 反倾层状岩质边坡倾倒变形机理与影响因素的离散元模拟[J]. 吉林大学学报(地球科学版), 2021, 51(6): 1770-1782.
[5]	李立云, 王子英, 王晓静, 杜修力. 近铁路基坑通风井段变形特征及其机制分析[J]. 吉林大学学报(地球科学版), 2021, 51(5): 1441-1451.
[6]	蒙启安, 李军辉, 李跃, 邹越. 海拉尔—塔木察格盆地中部富油凹陷高含凝灰质碎屑岩储层成因及油气勘探意义[J]. 吉林大学学报(地球科学版), 2020, 50(2): 569-578.
[7]	白永健, 王运生, 葛华, 倪化勇. 金沙江深切河谷百胜滑坡演化过程及成因机制[J]. 吉林大学学报(地球科学版), 2019, 49(6): 1680-1688.
[8]	唐军峰, 唐雪梅, 曾向农, 杨军, 李学政. 蓄水后库岸堆积体边坡变形特征及其稳定性分析[J]. 吉林大学学报(地球科学版), 2018, 48(5): 1546-1555.
[9]	陈冬霞, 庞雄奇, 杨克明, 祝渭平, 严青霞. 川西坳陷深层叠复连续型致密砂岩气藏成因及形成过程[J]. 吉林大学学报(地球科学版), 2016, 46(6): 1611-1623.
[10]	马云, 李三忠, 刘鑫, 赵淑娟, 余珊, 王霄飞, 张丙坤. 华南北部湾盆地的形成机制[J]. 吉林大学学报(地球科学版), 2014, 44(6): 1727-1736.
[11]	葸克来，操应长，周磊，赵贤正，金凤鸣，杨春宇，苏芮，董雄英. 廊固凹陷河西务构造带沙四上亚段有效储层成因机制[J]. 吉林大学学报(地球科学版), 2014, 44(5): 1451-1465.
[12]	程海艳. 库车褶皱冲断带西段盐底辟成因机制[J]. 吉林大学学报(地球科学版), 2014, 44(4): 1134-1141.
[13]	贾三石，王恩德，付建飞，门业凯，吴明刚. 冀东峪耳崖金矿床成矿地质特征、矿床地球化学及其成因机制探析[J]. 吉林大学学报(地球科学版), 2014, 44(3): 774-785.
[14]	支墨墨，尚岳全，徐兴华. 碎石土滑坡稳定性一元多重属性回归模型分析[J]. 吉林大学学报(地球科学版), 2013, 43(3): 883-890.
[15]	刘招君, 胡菲，孙平昌，孟庆涛，柳蓉. 再论陆相三级层序内四分方案及其在油气勘探中的应用[J]. 吉林大学学报(地球科学版), 2013, 43(1): 1-12.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed