[1]裴向军,袁 广,张晓超,等.坡脚开挖诱发滑坡机理——以沙井驿滑坡为例[J].山地学报,2017,(02):195-202.[doi:10.16089/j.cnki.1008-2786.000212]
　PEI Xiangjun,YUAN Guang,ZHANG Xiaochao,et al.Study on the Mechanism of the Loess Landslide Triggered by Slope Toe Excavation—for the Example of the Landslide of Shajingyi[J].Mountain Research,2017,(02):195-202.[doi:10.16089/j.cnki.1008-2786.000212]
点击复制

坡脚开挖诱发滑坡机理——以沙井驿滑坡为例()
分享到：

《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2017年02期
页码:
195-202
栏目:
山地灾害
出版日期:
2017-03-30

文章信息/Info

Title:
Study on the Mechanism of the Loess Landslide Triggered by Slope Toe Excavation—for the Example of the Landslide of Shajingyi
文章编号:
1008-2786-(2017)2-195-08
作者:
裴向军1; 袁 广1; 2; 张晓超1; 李维庆3; 袁 野3; 赵 峥2
1.地质灾害防治与地质环境保护国家重点实验室(成都理工大学),四川 成都 610059;
2.四川华地建设工程有限责任公司,四川 成都 610081;
3.四川省第二测绘地理信息工程院,四川 成都 610100
Author(s):
PEI Xiangjun1; YUAN Guang1; 2; ZHANG Xiaochao1; LI Weiqing3; YUAN Ye3; ZHAO Zheng2
1. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection(Chengdu University of Technology),ChengDu,Sichuan 610059,China;
2. Sichuan Huadi Building Engineering Co.Ltd,Chengdu,Sichuan 610081,China;
3. Sichuan Province in Second Geographic Information Engineering Institute of Surveying and Mapping,Chengdu,Sichuan 610100,China
关键词:
坡脚开挖; 滑坡机理; 减围压三轴试验; FLAC3D
Keywords:
slope toe excavation;  landslide mechanism;  RTC tests;  FLAC3D
分类号:
P642.2
DOI:
10.16089/j.cnki.1008-2786.000212
文献标志码:
A
摘要:
坡脚开挖、坡面堆载、不合理灌溉等人类活动诱发的工程性黄土滑坡灾害频频发生,对于当地居民的生命财产安全构成极大威胁。本文以兰州市沙井驿滑坡为研究对象,在工程地质勘测的基础上,研究滑坡的基本特征及导致滑坡发生的关键因素。通过减围压三轴试验研究黄土边坡开挖过程中土体的变形破坏特征。基于FLAC3D数值模拟方法,对黄土边坡的开挖过程进行模拟,分析开挖过程中边坡不同深度的土体应力及变形发展规律,揭示开挖过程中坡体稳定性变化规律及滑坡启动机理。结果表明,沙井驿滑坡是由于坡脚不合理开挖导致老滑坡复活,为牵引式滑坡;在开挖过程中,坡体内发生应力重分布,应力状态不断发生变化,随着开挖的进行,坡体变形逐渐增大;开挖结束后,坡体中部产生大量剪切裂缝,后缘产生张拉裂缝,坡体稳定性降至最低,中上部均有较大变形,最后发生失稳。
Abstract:
As results of engineering activities,such as excavation at slope toe,surcharge loading onto slope surface,improper irrigation of sloping farmland,etc.,loess landslides are occurring frequently in Western China,posing a great threats to the safety of life and property of local residents. Taking Shajingyi Landslide of Lanzhou City as case study,this research conducted field geological surveys for investigation on the main characteristics of loess landslide and its triggering factors. Then confining depressure triaxial tests were implemented to interpret deformation and failure of loess slope during excavation. Based on FLAC3D,the excavation process of loess slope was examined by numerical simulation,and soil stresses and deformation at different depths were collected for analysis in order to reveal mechanism of slope stability or failure during excavation. Research results suggested that Shajingyi Landslide was derived from a unreasonable excavation at slope toe,resulting in a resurgence of an old underlying landslide,typical of retrogressive landslide; During the excavation process,stress redistribution took place in the slope body with stress state regulating simultaneously,and the slope deformation gradually increased with excavation progress; Ensuing the excavation,there were large amounts of shear fractures generated on the middle open surface of the slope as well as tension cracks developed on the back edge,undermining slope stability,and soon it come to fail after a larger deformation in the upper part of the slope was observed.

参考文献/References:

[1] 仇保兴. 海绵城市(LID)的内涵、途径与展望[J]. 建设科技,2015,(01):11-18 [QIU Baoxing. Connotations,ways and prospect of sponge city(LID)[J].Construction Science and Technology,2015,(01):11-18]
[2] US EPA. Federal Water Pollution Control Act Amendments of 1972[S]. 1972. Public Law 92-500
[3] 车伍,吕放放,李俊奇,等.发达国家典型雨洪管理体系及启示[J].中国给水排水,2009,(20):12-17 [CHE Wu,LV Fangfang,LI Junqi,et al. Typical stormwater and flood management systems in developed countries and their inspiration[J].China Water&Waste Water,2009,(20):12-17]
[4] US EPA. Low Impact Development(LID):A Literature Review[R]. United States Environmental Protection Agency,2000. EPA-841-B-00-005
[5] CIRIA. Sustainable Urban Drainage System-Best Practice Manual[R].Report C523. Construction industry research and information association,London,2001
[6] LLOYD S D,Wong T H F,Chesterfield C J. Water Sensitive Urban Design—A Stormwater Management Perspective[R]. Industry Report.2002
[7] ROON,M R V,GREENAWAY A,DIXON J E,et al. Low Impact Urban Design and Development:scope,founding principles and collaborative learning[R]. Proceedings of the Urban Drainage Modelling and Water Sensitive Urban Design Conference. Melbourne,Australia. 2006
[8] BURNS M J,FLETCHER T D,WALSH C J,et al. Hydrologic shortcomings of conventional urban stormwater management and opportunities for reform[J]. Landscape and Urban Planning,2012,105(3):230-240
[9] HAN K,KIM Y,KIM B,et al. Calibration of stormwater management model using flood extent data[J]. Proceedings of the ICE-Water Management,2014,167(1):17-29
[10] 车伍,闫攀,赵杨,等.国际现代雨洪管理体系的发展及剖析[J]. 中国给水排水,2014,30(18):45-51[CHE Wu,YAN Pan,ZHAO Yang,et al. Development and analysis of international updated stormwater management systems[J].China Water & Wastewater,2014,30(18):45-51]
[11] 张书函,丁跃元,陈建刚. 德国的雨水收集利用与调控技术[J]. 北京水利,2002,(3):39-41[ZHANG Shuyuan,DING Yueyuan,CHEN Jiangang. Techinques on rainwaet rcolleciton,reuse and control in Gemrany[J]. Beijing Water Resources,2002,(3):39-41]
[12] 王虹,丁留谦,程晓陶,等.美国城市雨洪管理水文控制指标体系及其借鉴意义[J]. 水利学报,2015,46(11):1261-1271[WANG Hong,DING Liuqian,CHENG Xiaotao,et al. Hydrologic control criteria framework in the United States and its referential significance to China[J]. ShuiLiXueBao,2015,46(11):1261-1271]
[13] 张军红,徐义萍,王文鑫,等. 我国城市雨洪灾害原因及对策研究[J]. 科技创新与应用,2015,(22):179-180 [ZHANG Junhong,XU Yiping,WANG Wenxing,et al. China's urban rainwater disaster causes and suggestions[J]. Technology Innovation and Application,2015,(22):179-180]
[14] 林小如,曹韵. 我国城市雨洪管理困境解析与行动应对[J].现代城市研究,2014,(7):14-18 [LIN Xiaoru,CAO Yun. The Storm and the flood hazard problems and the corresponding approaches in chinese cities[J].Modern Urban Research,2014,(7):14-18]
[15] 孙明,李响,易好磊. 小城镇雨洪灾害的应急管理研究综述与对策[J]. 安徽农业科学,2015,43(22):120-122 [SUN Ming,LI Xiang,YI Haolei. Emergency management review and countermeasures on small towns rainwater disasters[J].Journal of Anhui Agri.Sci.,2015,43(22):120-122]
[16] 俞孔坚,李迪华,刘海龙.“反规划”途径[M].北京:中国建筑工业出版社,2005:33-34[YU Kongkjian,LI Dihua,LIU Hailong.“Anti planning” approach[M].Beijing:China Architecture & Building Press,2005:33-34]
[17] 俞孔坚,王思思,李迪华等. 北京城市扩张的生态底线——基本生态系统服务及其安全格局 [J]. 城市规划,2010,(2):19-24 [YU Kongkjian,WANG Sisi,LI Dihua,et al.Ecological baseline for beijing's urban sprawl:basic ecosystem service and their security patterns[J].City Planning Review,2010,(2):19-24]
[18] 王贺,刘高峰,王慧敏. 基于云模型的城市极端雨洪灾害风险评价[J]. 水利经济,2014,32(2):15-18 [WANG He,LIU Gaofeng,WANG Huiming.Warning of urban extreme rainstorm flood disasters based on cloud model[J]. Journal of Economics of Water Resources,2014,32(2):15-18]
[19] 赵晶. 城市化背景下的可持续雨洪管理[J]. 国际城市规划,2012,(2):114-119 [ZHAO Jing. Sustainable stormwater management in the background of urbanization[J]. Urban Planning International,2012,(2):114-119]
[20] 王建龙,车伍,易红星. 低影响开发与绿色建筑的雨水控制利用[J].工业建筑,2009,39(3):123-125,102 [WANG Jianlong,CHE Wu,YI Hongxing. Stormwater management in green building on the base of low impact development[J]. Industrial Construction,2009,39(3):123-125,102]
[21] 车伍,张炜,李俊奇等. 城市雨水径流污染的初期弃流控制[J].中国给水排水,2007,(6):1-5 [CHE Wu,ZHANG Wei,LI Junqi,et al. Initial split-flow control of urban rainwater runoff pollution[J]. China Water&Waste Water,2007,(6):1-5]
[22] 蔡凯臻. 缓解雨洪内涝灾害的城市设计策略——基于街区层面的暴雨径流过程调控[J]. 建筑学报,2015,(10):73-78 [CAI Kaizhen. Strategizing urban design to mitigate the disastrous damage of urban stormwater and waterlog based on the adjustment of stormwater runoff on the block level[J]. Architectural Journal,2015,(10):73-78]
[23] 王琦,邢忠,代伟国.山地城市空间的三维集约生态界定[J].城市规划,2006,(08):52-55.[WANG Qi; XING Zhong; DAI Weiguo.Three-dimensional intensive approach to the spatial design of mountainous cities[J]. City Planning Review,2006,(08):52-55]
[24] 程根伟,余新晓,赵玉涛,等.山地森林生态系统水文循环与数学模拟[M]. 科学出版社,2004:231-232 [CHEN Genwei,YU Xinxiao,ZHAO Yutao,et al.The hydrological cycle and its mathematical models of forest ecosystem in mountains[M]. Science Press,2004:231-232]
[25] 蓝永超,丁宏伟,胡兴林,等. 黑河山区气温与降水的季节变化特征及其区域差异[J]. 山地学报,2015,(3):294-302[ LAN Yongchao,DING Hongwei,HU Xinglin,et al. The seasonal change characteristics of temperature,precipitation in the mountain areas of the heihe river and their regional differences[J]. Mountain Research,2015,(3):294-302]
[26] RICHARD T T. FORMAN,Michel Godron. Landscape ecology(1st Edition)[M]. Wiley,1986.
[27] 朱强,俞孔坚,李迪华.景观规划中的生态廊道宽度[J].生态学报,2005,25(9):2406-2412 [ZHU Qiang,YU Kong-jian,LI Dihua. The width of ecological corridor in landscape planning[J]. Acta Ecologica Sinica,2005,25(9):2406-2412]
[28] 中华人民共和国住房和城乡建设部.海绵城市建设技术指南——低影响开发雨水系统构建(试行)[R]. 北京:中华人民共和国住房和城乡建设部,2014 [Ministry of Housing and Urban-Rural Development of the People's Republic of China. Sponge City Construction Technology Guide——Low Impact Development Rainwater System Construction(Trial)[R]. Beijing:Ministry of Housing and Urban-Rural Development of the People's Republic of China,2014:46-50]
[29] 范世香,韩绍文. 地面坡度对地表径流影响的实验研究[J]. 水土保持通报,1991,11(4):6-10 [FAN Shixiang,HAN Shaowen.Testing research on the effects of land surface slopes upon surface runoff[J].Bulletin of Soil and Water Conservation,1991,11(4):6-10]
[30] 中华人民共和国住房和城乡建设部标准定额研究所.室外排水设计规范(GB50014-2006)[S].北京:中国计划出版社,2006:21-23[ Standard Quota Research Institute of Housing and Urban-Rural Development of the People's Republic of China.Code for design of outdoor wastewater engineering(GB50014-2006)[S]. Beijing:China Planning Press,2006:21-23]

相似文献/References:

[1]吴能森.花岗岩残积土开挖边坡的工程特性[J].山地学报,2006,(04):431.

备注/Memo

备注/Memo:
基金项目(Foundation item):国家重点基础研究发展计划项目(2014CB744703); 中国地调局项目(No.1212011140005); 四川省测绘地理信息局科技项目及创新平台开放基金(2016ZC02)[National Key Basic Research Program(2014CB744703); China Geological Survey Project(1212011140005); Science and Technology Projects and Innovation Platform Open Fund of the Surveying and Mapping Geographic Information Bureau of Sichuan Province(2016ZC02)]
作者简介(Biography):裴向军(1970-),男,内蒙赤峰人,博士,教授,主要从事地质灾害及地质工程研究。[Pei Xiangjun(1970-), male, born in Chifeng, Inner Mongoria IM, Ph. D, professor, research interests: geological hazards, geological engineering, et al.] E-mail:peixj0119@tom.com
更新日期/Last Update: 2017-03-30