[1]黄丽华,刘顺青.考虑裂隙影响的红黏土边坡浅层稳定性分析[J].华南地震,2022,(02):102-108.[doi:10.13512/j.hndz.2022.02.14]
 HUANG Lihua,LIU Shunqing.Shallow Stability Analysis of Red Clay Slope Considering the Influence of Fissure[J].,2022,(02):102-108.[doi:10.13512/j.hndz.2022.02.14]
点击复制

考虑裂隙影响的红黏土边坡浅层稳定性分析()
分享到:

华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2022年02期
页码:
102-108
栏目:
土木工程防震减灾
出版日期:
2022-06-30

文章信息/Info

Title:
Shallow Stability Analysis of Red Clay Slope Considering the Influence of Fissure
文章编号:
1001-8662(2022)02-0102-07
作者:
黄丽华1刘顺青2
1.河西学院土木工程学院,甘肃 张掖 734000;2.江苏科技大学 土木工程与建筑学院,江苏 镇江 212100
Author(s):
HUANG Lihua1LIU Shunqing2
1.School of Civil Engineering , Hexi University , Zhangye 734000, China;2.School of Architecture and Civil Engineering , Jiangsu University of Science and Technology , Zhenjiang 212100, China
关键词:
红黏土边坡含水率浅层稳定性裂隙大气影响深度
Keywords:
Red clay slopeWater contentShallow stabilityFissureAtmospheric influence depth
分类号:
TU443
DOI:
10.13512/j.hndz.2022.02.14
文献标志码:
A
摘要:
通过室内直剪试验获取了现场含水率变化范围内坡体红黏土的抗剪强度及残余抗剪强度参数,同时采用湿度系数结合现场探槽试验以及裂隙的统计资料综合确定了红黏土边坡的裂隙开展深度,以此为基础采用二维有限元分析软件MidasSoilworks分析了考虑裂隙影响的红黏土边坡的浅层稳定性,并将计算结果与不考虑裂隙时进行了对比。结果表明:红黏土边坡在考虑裂隙影响时滑动面随含水率增大逐渐从深层向浅层转变,并最终处于裂隙开展深度范围内;红黏土边坡的浅层安全系数在坡体饱和之前,下降最为明显;与不考虑裂隙的红黏土边坡相比,浅层稳定安全系数的绝对衰减率在20.4%~32.0%变化。
Abstract:
The shear strength and residual shear strength parameters under different water contents of red clay are measured by direct shear tests. The depth of fissure of red clay slope is determined by using humidity coefficient, field grooving test and statistical data of fissures. The shallow stability of red clay slope considering the influence of fissure is analyzed by using the two-dimensional finite element analysis software Midas Soilworks. The computing results are compared with the shallow safety factor without considering fissures. The computing results indicate that the sliding surfaces of red clay slopes gradually change from deep to shallow with the increase of water contents, and finally the sliding surface is in the range of the depth of fissure. The shallow safety factor of the red clay slope is the most obvious before the saturation of the red clay. Compared with the red clay slopes without fissures, the absolute attenuation rate of the shallow safety factor is between 20.4% and 32.0%.

参考文献/References:

[1]殷宗泽.土工原理[M].北京:中国水利水电出版社,2007.
[2]陈议城,陈学军,吴迪,等.不同含水率下红黏土无侧限抗压强度与电阻率关系[J].桂林理工大学学报,2020,40(2):358-363.
[3]刘顺青,洪宝宁,方庆军,等.高液限土和红黏土的水敏感性研究[J].深圳大学学报理工版,2013,30(1):78-83.
[4]陈佳雨,刘之葵.含水率及干密度对桂林红黏土抗剪强度的影响[J].中国岩溶,2019,38(6):930-936.
[5]陈鸿宾,陈学军,齐运来,等.干密度与含水率对重塑红黏土抗剪强度参数影响研究[J].工程地质学报,2019,27(5):1035-1040.
[6]穆坤,孔令伟,张先伟,等.红黏土工程性状的干湿循环效应试验研究[J].岩土力学,2016,37(8):2247-2253.
[7]李天宝,许家培,刘开富.降雨及植被加固对红黏土边坡稳定性的影响[J].山东农业大学学报(自然科学版),2020, 51(6):1080-1084.
[8]张群,许强,易进松,等.南江红层地区缓倾角浅层土质滑坡降雨入渗深度与成因机理研究[J]. 岩土工程学报, 2016,38(8):1447-1455.
[9]姚海林,郑少河,陈守义.考虑裂隙及雨水入渗影响的膨胀土边坡稳定性分析[J].岩土工程学报,2001,23(5):606-609.
[10]王志伟,王庚荪.裂隙性粘土边坡渐进性破坏的FLAC模拟[J].岩土力学,2005,26(10):1637-1640.
[11]殷宗泽,袁俊平,韦杰,等.论裂隙对膨胀土边坡稳定的影响[J].岩土力学,2012,34(12):2155-2161.
[12]袁俊平,蔺彦玲,丁鹏,等.裂隙诱导各向异性对边坡降雨入渗的影响[J].岩土工程学报,2016,38(1):76-82.
[13]余飞,陈善雄,许锡昌,等.合肥地区膨胀土路基处置深度问题探讨[J].岩土力学,2006,(11),1963-1966.
[14]王威,刘顺青,杨正玉,等. 大气影响层含水率变化对下蜀土边坡稳定性的影响分析[J].河北工程大学学报(自然科学版),2019,36(4),19-24.
[15]肖荣久.陕南膨胀土及其灾害地质研究[M].西安:陕西科学技术出版社,1995.
[16] Giffiths D V,Lane P A. Slope stability analysis by finite element [J]. Geotechnique,1999,49(3):387-403.
[17] Cheng Y M,Lansivaara T,Wei W B. Two-dimensional slope stability by limit equilibrium and strength reduction methods [J]. Computers and Geotechnics,2006,37(3):137-150.

相似文献/References:

[1]刘志伟,丁波涛,梁崇旭.含水率对花岗岩边坡风化层界面剪切特性的影响[J].华南地震,2021,41(04):115.[doi:10.13512/j.hndz.2021.04.16]
 LIU Zhiwei,DING Botao,LIANG Chongxu.Effect of Water Content on Weathered Layer Interface Shear Characteristics of Granite Slope[J].,2021,41(02):115.[doi:10.13512/j.hndz.2021.04.16]
[2]冯 忞,宋文捷.含水率对残积土与土工织物界面剪切特性的影响[J].华南地震,2024,(01):157.[doi:10.13512/j.hndz.2024.01.18]
 FENG Min,SONG Wenjie.Effect of Moisture Content on the Shear Characteristics of the Interface Between Residual Soil and Geotextile[J].,2024,(02):157.[doi:10.13512/j.hndz.2024.01.18]

备注/Memo

备注/Memo:
收稿日期:2021-07-04
基金项目:国家自然科学基金项目(51579119);甘肃省高等学校创新基金项目(2021B-259)。
作者简介:黄丽华(1986-),女,硕士,讲师,主要从事边坡稳定性等方面的研究。E-mail:444508662@qq.com
通信作者:刘顺青(1985-),男,博士,讲师,主要从事边坡工程等方面的研究。E-mail: sqljust@just.edu.cn
更新日期/Last Update: 2022-06-30