Study on slope stability and the effect of highfill on the mechanical properties of red clay foundation

Authors

GAO Shengxiang, CUMT Geotechnical Engineering & New Technology Development Co. Ltd., Xuzhou 221008, China
XU Qiang, Southwest Pipeline Branch of PetroChina Co. Ltd., Chengdu 610041, China
MA Hongyu, CUMT Geotechnical Engineering & New Technology Development Co. Ltd., Xuzhou 221008, China
WU Shenglin, CUMT Geotechnical Engineering & New Technology Development Co. Ltd., Xuzhou 221008, China; School of Resource and Earth Science, China University of Mining and Technology, Xuzhou 221116, China
WU Kang, CUMT Geotechnical Engineering & New Technology Development Co. Ltd., Xuzhou 221008, China
LIU Peng, CUMT Geotechnical Engineering & New Technology Development Co. Ltd., Xuzhou 221008, China
WU Zehui, CUMT Geotechnical Engineering & New Technology Development Co. Ltd., Xuzhou 221008, China

Abstract

This paper takes a highfill slope in Anning in Yunnan Province as a case, using investigation, monitoring and other methods, on the basis of the distribution characteristics of red clay, the physical and mechanical properties of red clay before and after filling were analyzed, then the stability of slope was studied by numerical simulation software. The results show that the physical and mechanical indexes of the red clay foundation decrease first and then increase before and after the fill project, the stability of the fill slope shows the trend of decrease first and then increase. The ground fissures in the upper part of the slope resulted from the uneven deformation of the slope body were caused by the filling body and the foundation soil consolidation under the unfavorable combination of the foundation soil of the original topography and the uneven thickness of the filling soil, and the slope body is stable in general. Research result has certain reference value and guiding significance to the highfill slope project design of red clay foundation, the study on the influence to slope stability by physical and mechanical index of red clay foundation, the control of inhomogeneous deformation during the construction, crack hazard in the upper part of slope.

Keywords

red clay, highfill slope, slope body stability, slope crack, numerical simulation, Anning City in Yunnan Province

DOI

10.3969/j.issn.1001-1986.2019.04.020

Recommended Citation

GAO Shengxiang, XU Qiang, MA Hongyu, et al. (2019) "Study on slope stability and the effect of highfill on the mechanical properties of red clay foundation," Coal Geology & Exploration: Vol. 47: Iss. 4, Article 21.
DOI: 10.3969/j.issn.1001-1986.2019.04.020
Available at: https://cge.researchcommons.org/journal/vol47/iss4/21

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