|本期目录/Table of Contents|

[1]王雷,赵法锁,程晓辉,等.黄土基岩接触面滑坡滑带土物理力学特性及微观结构[J].地球科学与环境学报,2017,39(03):450-458.
 WANG Lei,ZHAO Fa-suo,CHENG Xiao-hui,et al.Physical and Mechanical Properties and Microstructures of Slip Soil of Loess Bedrock Contact Landslide[J].Journal of Earth Sciences and Environment,2017,39(03):450-458.
点击复制

黄土基岩接触面滑坡滑带土物理力学特性及微观结构(PDF)
分享到:

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第39卷
期数:
2017年第03期
页码:
450-458
栏目:
工程地质
出版日期:
2017-05-15

文章信息/Info

Title:
Physical and Mechanical Properties and Microstructures of Slip Soil of Loess Bedrock Contact Landslide
文章编号:
1672-6561(2017)03-0450-09
作者:
王雷赵法锁程晓辉齐笛王瑞
1.长安大学 地质工程与测绘学院,陕西 西安 710064; 2.西安勘察设计研究院有限责任公司,陕西 西安 710054; 3.长安大学 建筑工程学院,陕西 西安 710061
Author(s):
WANG Lei ZHAO Fa-suo CHENG Xiao-hui QI Di WANG Rui
1. School of Engineering and Geomatics, Chang’an University, Xi’an 710064, Shaanxi, China; 2. Xi’an Railway Survey and Design Institute Co., Ltd, Xi’an 710054, Shaanxi, China; 3. School of Civil Engineering, Chang’an University, Xi’an 710061, Shaanxi, China
关键词:
黄土滑坡滑带土重塑土剪切试验X射线衍射物理力学微观结构
Keywords:
loess landslide slip soil remolded soil shearing test X-ray diffraction physical mechanics microstructure
分类号:
P642.1
DOI:
-
文献标志码:
A
摘要:
滑带土抗剪强度取值及微观结构特性对于边坡稳定及防治具有重要意义。以陕西延安地区二庄科滑坡为研究对象,通过剪切试验、扫描电镜及X射线衍射仪等,对典型黄土基岩接触面滑坡滑带土物理力学特性及微观结构进行研究;通过剪切试验得到不同含水率、不同干密度条件下滑带土的抗剪强度参数及其与含水率、干密度之间的相关性函数;通过研究其微观结构及矿物成分,分析了不同干密度、不同垂直压力条件下的土样微观结构。结果表明:随着含水率的减小和干密度的增加,土样的抗剪强度参数均有所提高;黏聚力与含水率呈负指数关系,内摩擦角与含水率呈负线性关系,黏聚力、内摩擦角分别与干密度呈正线性关系;随着垂直压力的增大,孔隙离散指数增大,颗粒离散指数、孔隙(颗粒)平均形态系数、孔隙(颗粒)定向概率熵及孔隙(颗粒)定向分维数均减小;随着干密度的增大,颗粒定向概率熵及颗粒定向分维数均增大。
Abstract:
Shear strength and microstructure characteristics of slip soil are important for the slope stability. Taking Erzhuangke landslide in Yanan area of Shaanxi as an example, the physical and mechanical properties and microstructures of slip soil of loess bedrock contact landslide were discussed based on the shear test, scanning electron microscope (SEM) and X-ray diffractometer. The shear strength parameters of slip soil under the condition of different moistures and dry densities were obtained through the shear test, and the correlation between the shear strength parameters, moisture and dry density were discussed. According to the mineral composition, the microstructure characteristics of slip soil under the condition of different dry densities and vertical pressures were analyzed. The results show that the shear strength parameters of soil samples increase with the decrease of moisture and the increase of dry density; the relationships of cohesion, internal friction angle with moisture are negative exponent and negative linear, respectively; the relationships of cohesion, internal friction angle with dry density are positive linear; with the increase of vertical pressure, all of the dispersion indexes of particle, and the average shape coefficients, quantitative probabilistic entropy and orientation fractal dimension of porosity (particle) decease; with the increase of dry density, both of quantitative probabilistic entropy and orientation fractal dimension of particle increase.

参考文献/References:

-

相似文献/References:

[1]谢和平,邓建辉,李碧雄.四川芦山地震灾害调查与灾后重建的相关问题分析[J].地球科学与环境学报,2013,35(02):1.
 XIE He-ping,DENG Jian-hui,LI Bi-xiong.Investigation of Lushan Earthquake Disasters and Analysis of Related Problems During Post-quake Reconstruction in Sichuan[J].Journal of Earth Sciences and Environment,2013,35(03):1.
[2]门玉明,韩冬冬,王海英,等.计算锚索抗滑桩变形及内力的一种新方法[J].地球科学与环境学报,2013,35(01):90.
 MEN Yu-ming,HAN Dong-dong,WANG Hai-ying.New Method for Calculating Deformation and Internal Force of Anchor Anti-slide Pile[J].Journal of Earth Sciences and Environment,2013,35(03):90.
[3]马超,胡凯衡,宋国虎,等.汶川地震灾区帽壳子滑坡形成泥石流的过程和特征[J].地球科学与环境学报,2013,35(04):98.
 MA Chao,HU Kai-heng,SONG Guo-hu,et al.Processes and Characteristics of Debris Flows Induced by Maoqiaozi Landslide in Wenchuan Earthquake Stricken Area[J].Journal of Earth Sciences and Environment,2013,35(03):98.
[4]王阿丹,王昌业,李萍,等.西安白鹿塬北缘黄土边坡稳定的可靠度分析[J].地球科学与环境学报,2012,34(01):104.
 WANG A-dan,WANG Chang-ye,LI Ping,et al.Reliability analysis for stability of loess slopes along the northern edge of Bailuyuan, Xi'an[J].Journal of Earth Sciences and Environment,2012,34(03):104.
[5]李萍,赵纪飞,李同录.山西乡宁—吉县地区黄土高边坡可靠度研究[J].地球科学与环境学报,2012,34(02):81.
 LI Ping,ZHAO Ji-fei,LI Tong-lu.Study on Reliability for Loess High Slopes in Xiangning-Jixian Area of Shanxi Province[J].Journal of Earth Sciences and Environment,2012,34(03):81.
[6]李文,龙建辉,李同录,等.陕西泾阳南塬黄土滑坡滑带土残余剪切强度特性[J].地球科学与环境学报,2012,34(04):95.
 LI Wen,LONG Jian-hui,LI Tong-lu,et al.Residual Shear Strength Characteristics of Landslide Soil in Loess Landslide of Jingyang Southern Highland, Shaanxi[J].Journal of Earth Sciences and Environment,2012,34(03):95.
[7]苏生瑞,张永双,李松,等.汶川地震引发高速远程滑坡运动机理数值模拟研究——以谢家店子滑坡为例[J].地球科学与环境学报,2010,32(03):277.
 SU Sheng-rui,ZHANG Yong-shuang,LI Song,et al.Numerical Analysis on Motion Mechanism of Highspeed and Long Runout Landslide by Wenchuan Earthquake——Taking Xiejiadianzi Landslide as an Example[J].Journal of Earth Sciences and Environment,2010,32(03):277.
[8]邵勇,覃仁辉.预应力锚索框架梁边坡支护数值模拟[J].地球科学与环境学报,2010,32(03):307.
 SHAO Yong,QIN Ren-hui.Numerical Simulation of Slope Supporting for Prestressed Anchor with Frame Beam[J].Journal of Earth Sciences and Environment,2010,32(03):307.
[9]张波,陈晓东.闭合型地下连续墙基础竖向承载性能数值模拟[J].地球科学与环境学报,2010,32(03):311.
 ZHANG Bo,CHEN Xiao-dong.Numerical Simulation of Vertical Bearing Capacity of Closed Underground Diaphragm Wall[J].Journal of Earth Sciences and Environment,2010,32(03):311.
[10]楚敬龙,王金生,滕彦国,等.基于GIS的滑坡灾害危险性区划研究——以重庆市万州区为例[J].地球科学与环境学报,2010,32(04):409.
 CHU Jing-long,WANG Jin-sheng,TENG Yan-guo,et al.Study on Landslide Hazard Zonation Based on GIS——Taking Wanzhou District of Chongqing City as an Example[J].Journal of Earth Sciences and Environment,2010,32(03):409.

备注/Memo

备注/Memo:
收稿日期:2017-03-13
基金项目:国家自然科学基金项目(41202190);陕西省自然科学基金项目(2016JM4019);中央高校基本科研业务费专项资金项目(310828163409)
作者简介:王雷(1981-),男,安徽寿县人,中铁西安勘察设计研究院有限责任公司高级工程师,长安大学工学博士研究生,E-mail:wl_construction@163.com。
通讯作者:赵法锁(1954-),男,河南三门峡人,教授,博士研究生导师,工学博士,E-mail:zfasuo@163.com。
更新日期/Last Update: 2017-06-05