[1]张钧,梁为邦,林红,等.二元结构库岸边坡失稳机制试验研究[J].水文地质工程地质,2020,47(3):156-163.[doi:10.16030/j.cnki.issn.1000 -3665.201906059]
 ZHANG Jun,LIANG Weibang,LIN Hong,et al.An experimental study of the bank slope instability mechanism of dual structure reservoir[J].Hydrogeology & Engineering Geology,2020,47(3):156-163.[doi:10.16030/j.cnki.issn.1000 -3665.201906059]
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二元结构库岸边坡失稳机制试验研究()
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《水文地质工程地质》[ISSN:1000-3665/CN:11-2202/P]

卷:
47卷
期数:
2020年3期
页码:
156-163
栏目:
环 境 地 质
出版日期:
2020-05-15

文章信息/Info

Title:
An experimental study of the bank slope instability mechanism of dual structure reservoir
文章编号:
1000 -3665(2020)03 -0156 -08
作者:
张钧1梁为邦1林红1苏东院1田毅1许万忠2熊茹雪2史丁康2
1.云南省水利水电勘测设计研究院,云南 昆明650021;2.昆明理工大学国土资源工程学院,云南 昆明650093
Author(s):
ZHANG Jun1 LIANG Weibang1 LIN Hong1 SU Dongyuan1 TIAN Yi1 XU Wanzhong2 XIONG Ruxue2 SHI Dingkang2
1.Yunnan Institute of Water and Hydropower Engneering Investigation, Design and Research,Kunming, Yunnan650021,China;2.School of Land and Resources Engineering,Kunming University of Science and Technology,Kunming, Yunnan650093, China
关键词:
二元结构边坡模型试验浸润线失稳机制
Keywords:
dual structure slope model test saturation line mechanism of instability
分类号:
TV697.2+3
DOI:
10.16030/j.cnki.issn.1000 -3665.201906059
摘要:
水位升降条件下库岸边坡变形失稳问题是水库建设中必须考虑的重要安全性问题。二元结构是库岸岩土体的一种特有结构,其变形破坏失稳有特殊的力学机制及规律。为揭示库岸边坡处于不同坡角及不同土岩界面倾角条件下的失稳机制,尤其是水位变化条件下库岸岩土体浸润线的分布及演化特征,文章通过构建水位升降条件下的二元结构库岸边坡物理实验模型,借助监测及摄影的技术手段观测边坡土体内浸润线及岩土体变形破坏特征,揭示二元结构库岸边坡的变形失稳机制。研究结果表明:二元结构库岸边坡在水位升降条件下整体坡角的改变会引发不同的变形破坏模式:55°边坡以垮塌失稳为主,35°边坡稳定性较好,45°边坡易发生由坡脚破坏牵引的局部失稳;土岩界面倾角对边坡稳定性也产生较大影响,较大的倾角易于引发坡体沿土岩界面发生滑动失稳。本研究结果可为揭示二元结构库岸边坡失稳致灾机制及有效防治提供借鉴。
Abstract:
The deformation and instability of bank slope under the condition of water level rise and fall is very important for the safety of reservoir construction. The dual structure is a special structure of rock and soil mass on the bank of reservoir. Its deformation and failure characteristics have its special mechanical mechanism and law. In order to reveal the instability mechanism of bank slope under the condition of different slope angles and different soil rock interface angles, especially the condition of water level change, the distribution and evolution characteristics of the saturation line of the rock and soil mass in the lower reservoir bank are studied in this paper by constructing the physical experiment model of the dual structure reservoir bank slope under the condition of water level rise and fall, and by means of monitoring and photography the characteristics of the saturation line, and the deformation and failure of the rock and soil mass in the slope are observed. The deformation and instability mechanism of the dual structure reservoir bank slope are revealed. The research results show that under the condition of the dual structure reservoir bank slope during the water level rise and fall, the change in the overall slope angle will lead to different deformation and failure modes:the 55° slope is dominated by collapse and instability, the 35°slope has good stability, and the 45° slope forms local instability pulled by slope toe failure. The slope stability will be greatly affected by the inclination of soil rock interface, which is easy to cause sliding instability of slope along the soil rock interface. The results also show that the mechanism and effective prevention and control of the landslide can be used for reference.

参考文献/References:

[1]雷谦荣.边坡中地下水压力问题的探讨[J].工程勘察, 1997,25(1): 29-32.
[LEI Q R. Discussion on the issue of underground pressure in slope[J]. Geotechnical Investigation & Surveying,1997,25(1): 29-32.(in Chinese)]
[2]邓华锋,李建林.库水位变化对库岸边坡变形稳定的影响机理研究[J].水利学报,2014,45(增刊2):45-51.
[DENG H F, LI J L. Research on the influence mechanism of water level fluctuation on the bank landslide deformation and stability[J]. Journal of Hydraulic Engineering,2014,45(Sup2):45-51.(in Chinese)]
[3]罗先启,程圣国,牛恩宽.滑坡物理模型试验畸变修正及应用研究[J].岩石力学与工程学报, 2009,28(增刊1): 3082-3088.
[LUO X Q,CHENG S G, NIU E K. Research on aberration correction and application in landslide geomechanical model test[J]. Chinese Journal of Rock Mechanics and Engineering, 2009,28(Sup1): 3082-3088.(in Chinese)]
[4]赵代鹏,王世梅,谈云志,等.库水升降作用下浮托减重型滑坡稳定性研究[J].岩土力学,2013,34(4):1017-10 24.
[ZHAO D P, WANG S M, TAN Y Z, et al. Stability studies of buoyancy weight loss landslides under reservoir water level fluctuation[J]. Rock and Soil Mechanics, 2013,34(4): 1017-1024.(in Chinese)]
[5]张坤勇,李广山,杜伟,等.土质边坡渐进破坏过程的近似模拟[J].天津大学学报(自然科学与工程技术版),2019,52(增刊1):99-105.
[ZHANG K Y,LI G S,DU W, et al.Simulation of progressive failure process of soil slope[J].Journal of Tianjin University(Science and Technology),2019,52(Sup1):99- 105.(in Chinese)]
[6]晏鄂川,朱大鹏,宋琨,等.基于数值模拟的三峡库区典型堆积层滑坡变形预测方法[J].吉林大学学报(地球科学版), 2012,42(2): 422-429.
[YAN E C, ZHU D P, SONG K, et al. Deformation prediction method of typical accumulative landslide in Three Gorges reservoir based on numerical modeling[J]. Journal of Jilin University(Earth Science Edition), 2012,42(2): 422-429.(in Chinese)]
[7]王俊杰,张梁,阎宗岭.水库初次蓄水中均质库岸塌岸现象试验研究[J].岩土工程学报,2011,33(8):1284-1289.
[WANG J J,ZHANG L,YAN Z L.Experiment study on homogeneous bank caving of reservoirs during the first impounding[J].Chinese Journal of Geotechnical Engineering, 2011,33(8):1284-1289. (in Chinese)]
[8]王乐华,徐义根,许晓亮,等.基于模型试验的涉水堆积体岸坡变形 -破坏模式研究[J].长江科学院院报, 2017, 34(5): 81-85.
[WANG L H, XU Y G, XU X L, et al. Model test on deformation and failure modes of accumulation slope under the action of reservoir water[J]. Journal of Yangtze River Scientific Research Institute, 2017, 34(5): 81-85. (in Chinese)
[9]于克臣,姚磊华,王金超,等.四川雅安峡口滑坡物理模型试验研究[J].水文地质工程地质,2014,41(3):105-110.
[YU K C,YAO L H,WANG J C, et al.A model test study of the Xiakou landslide of Ya’an in Sichuan [J].Hydrogeology & Engineering Geology,2014,41(3): 105-110(in Chinese)
[10]窦增宁,赵玉娇,刘昌义,等.模拟降雨条件下寒旱地区边坡土体位移及土压力特征[J].水文地质工程地质, 2018,45(2): 117-122.
[DOU Z N, ZHAO Y J, LIU C Y, et al. Soil displacement and earth pressure characteristics of slopes in a cold and arid region under rainfall simulation[J]. Hydrogeology & Engineering Geology, 2018, 45(2): 117-122.(in Chinese)]
[11]贾官伟,詹良通,陈云敏.水位骤降对边坡稳定性影响的模型试验研究[J]. 岩石力学与工程学报, 2009, 28(9): 1798-1803.
[JIA G W, ZHAN L T, CHEN Y M. Model test study of slope instability induced by rapid drawdown of water level[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(9): 1798-1803.(in Chinese)]
[12]姜海西,沈明荣,程石,等.水下岩质边坡稳定性的模型试验研究[J].岩土力学,2009,30(7):1993-1999.
[JIANG H X,SHEN M R,CHENG S, et al. Model test study on stability of underwater rock slopes[J]. Rock and Soil Mechanics,2009,30(7):1993-1999.(in Chinese)]
[13]徐平,李同录,李萍.考虑非饱和渗流作用下三峡库岸滑坡稳定性研究[J]. 中国地质灾害与防治学报, 2010,21(1): 7-12.
[XU P, LI T L, LI P. Stabilitystudy on Majiagou langslide in Three Gorges reservoir area with consideration of unsaturated seepage[J]. The Chinese Journal of Geological Hazard and Control, 2010,21(1): 7-12.(in Chinese)]
[14]宋亚亚,何忠意,朱佩宁,等.降雨入渗对非饱和土边坡稳定性影响的参数研究[J].水利与建筑工程学报, 2019,17(3):72-78.
[SONG Y Y, HE Z Y, ZHU P N, et al. Parametric study of effects of rain infiltration on unsaturated slopes[J]. Journal of Water Resources and Architectural Engineering,2019,17(3):72-78.(in Chinese)]
[15]FAN L,ZHANG G C, LI B, et al. Deformation and failure of the Xiaochatou Landslide under rapid drawdown of the reservoir water level based on centrifuge tests[J]. Bulletin of Engineering Geology and the Environment, 2017, 76(3): 891-900.
[16]张友谊,胡卸文.库水位等速上升作用下岸坡地下水浸润线的计算[J].水文地质工程地质,2007,34(5): 46-49.
[ZHANG Y Y, HU X W. Calculation of saturation line of groundwater under reservoir water table uniform rising [J]. Hydrogeology & Engineering Geology, 2007,34(5): 46-49.(in Chinese)]
[17]郑颖人,时卫民,孔位学.库水位下降时渗透力及地下水浸润线的计算[J].岩石力学与工程学报,2004, 23(18): 3203-3210.
[ZHENG Y R,SHI W M,KONG W X. Calculation of seepage forces and phreatic surface under drawdown conditions[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(18):3203-3210.(in Chinese)]
[18]刘才华,陈从新,冯夏庭.库水位上升诱发边坡失稳机理研究[J].岩土力学,2005,26(5):769-773.
[LIU C H, CHEN C X, FENG X T. Study on mechanism of slope instability due to reservoir water level rise[J]. Rock and Soil Mechanics,2005,26(5):769-773.(in Chinese)]

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 FU Kang lin,FU Hong yuan,GUO Zhu,et al.Insitu monitoring experiment for rock slope of the LixianXiaojin Highway in Sichuan[J].Hydrogeology & Engineering Geology,2012,39(3):126.
[2]甘建军,黄润秋,范崇荣,等.都江堰—汶川公路边坡地震破坏模式研究[J].水文地质工程地质,2011,38(3):59.
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备注/Memo

备注/Memo:
收稿日期: 2019 -06 -25; 修订日期: 2019 -11 -14
基金项目: 国家自然科学基金资助项目“基于结构特征的锚注加固节理岩体破坏机理研究”(41562016)
第一作者: 张钧(1963 -),男,高级工程师,研究方向为水文地质工程地质。E -mail:542599223@qq.com
通讯作者: 许万忠(1965 -),男,副教授,工学博士,研究方向为边坡工程、地基基础处理。E -mail:582647881@qq.com
更新日期/Last Update: 2020-05-15