Effects of stratigraphic division on stability analysis of high loess slopes

LIN Xiao-yan; YANG Ze; LI Ping; YANG Yong-hui; LI Tong-lu

doi:10.11779/CJGE2021S1014

Volume 43 Issue S1

Turn off MathJax

Article Contents

Abstract

References

Chinese Journal of Geotechnical Engineering > 2021 > 43(S1): 76-80. > DOI: 10.11779/CJGE2021S1014

LIN Xiao-yan, YANG Ze, LI Ping, YANG Yong-hui, LI Tong-lu. Effects of stratigraphic division on stability analysis of high loess slopes[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(S1): 76-80. DOI: 10.11779/CJGE2021S1014

Citation:

PDF (896 KB)

Effects of stratigraphic division on stability analysis of high loess slopes

1.
School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an 710065, China
2.
Shaanxi Key Laboratory of Petroleum Accumulation Geology, Xi'an Shiyou University, Xi'an 710065, China
3.
Shaanxi Railway Instutute, Weinan 714000, China
4.
School of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, China
5.
China Electronic Research Institute of Engineering Investigations and Design, Xi'an 710054, China

More Information

Received Date: December 14, 2020
Available Online: December 05, 2022

Graphical Abstract

Abstract

Abstract

Taking the high loess slope with a slope of 45°and a slope height of 100 m in Linfen-Jixian Expressway area of Shanxi Province as an example, different stratigraphic stratification methods are studied.The models for four stratification methods are established by using the SLOPE/W software, and the limit equilibrium method(Morgenstern-Price method)is used to solve the stability coefficients of different models.The influences of different stratification methods on the stability of the high loess slope are explored to obtain the optimal stratigraphic stratification methods.The analysis results show that the stability coefficients calculated by different stratigraphic stratification methods are different.With the increase of the number of stratifications, the larger the stability coefficient is, the better the slope stability is.In addition, through comprehensive comparative analysis, the method for dividing the loess strata according to the geological era can meet the research needs of construction engineering field.Moreover, less workload can improve efficiency and save cost, which is more significant for the calculation and analysis of the stability of high loess slopes.
- loess,
- high slope,
- stratigraphic division,
- stability analysis

FullText(HTML)

References (11)

References

[1]	廖珊珊, 张玉成, 胡海英. 边坡稳定性影响因素的探讨[J]. 广东水利水电, 2011(7): 31-34. LIAO Shan-shan, ZHANG Yu-cheng, HU Hai-ying. Discussiononthe influence factors of slope stability[J]. Guangdong Water Resources and Hydropower, 2011(7): 31-34. (in Chinese)
[2]	刘洋, 刘润, 程辉, 等. 黄土高陡边坡稳定性研究[J]. 水利与建筑工程学报, 2017, 15(3): 92-95, 122. LIU Yang, LIU Run, CHENG Hui, et al. Stability evaluation of high and steep loess slope[J]. Journal of Water Resources and Architectural Engineering, 2017, 15(3): 92-95, 122. (in Chinese)
[3]	王恭先. 滑带土抗剪强度参数的综合分析选取法[C]//滑坡文集(兰州滑坡会议论文选集). 北京: 中国铁道出版社, 1988. WANG Gong-xian. Comprehensive analysis and selection method of shear strength parameters of sliding zone soil[C]//Landslide Anthology(Selected Papers of Lanzhou Landslide Conference). Beijing: China Railway Press, 1988. (in Chinese)
[4]	王永焱, 滕志宏. 中国黄土的地层划分[J]. 地质论评, 1983, 29(3): 201-208. WANG Yong-yan, TENG Zhihong. Stratigraphical division of the loess in China[J]. Geological Review, 1983, 29(3): 201-208. (in Chinese)
[5]	张宗祜, 张之一, 王芸生. 论中国黄土的基本地质问题[J]. 地质学报, 1987(4): 362-374. ZHANG Zong-hu, ZHANG Zhi-yi, WANG Yun-sheng. Basic geologic problems of loess in China[J]. Acta Geologica Sinica, 1987(4): 362-374. (in Chinese)
[6]	丁仲礼, 杨石岭, 孙继敏. 2.6 Ma前后大气环流重构的黄土-红黏土沉积证据[J]. 第四纪研究, 1999(3): 277-281. DONG Zhong-li, YANG Shi-ling, SU Ji-min, LIU Dong-sheng. Re-organization of atmospheric circulation at about 2.6 Ma over Northern China[J]. Quaternary Sciences, 1999(3): 277-281. (in Chinese)
[7]	王念秦. 黄土滑坡灾害研究[M]. 兰州: 兰州大学出版社, 2005. WANG Nian-qin. Study on Loess Landslide Disaster[M]. Lanzhou: Lanzhou University Press, 2005. (in Chinese)
[8]	丁军友. 渭南吴田黄土剖面地层CBR值分布规律研究[D]. 西安, 长安大学, 2013. DING Jun-you. Study on the Distribution Law of CBR Value in Wutian Loess Section of Weinan[D]. Xi'an, Changan University, 2013. (in Chinese)
[9]	公路土工试验规程：JTG E40—2007[S]. 北京: 中国计划出版社, 2007. JTG E40—2007 Highway Geotechnical.Test Code: JTG E40—2007[S]. Beijing: China Planning Press, 2007. (in Chinese)
[10]	刘东生. 黄土与环境[M]. 北京: 科学出版社, 1985. LIU Dong-sheng. Loess and Environment[M]. Beijing: Science Press, 1985. (in Chinese)
[11]	王永焱. 中国黄土研究的新进展[M]. 西安: 陕西人民出版社, 1985. WANG Yong-yan. New Progress in Loess Research in China[M]. Xi'an: Shaanxi People's Press, 1985. (in Chinese)