[1]张赓旺,宋嘉杰.含水率及填充土含量对松散岩堆体抗剪强度的影响规律[J].高速铁路技术,2023,14(05):34-39.[doi:10.12098/j.issn.1674-8247.2023.05.007]
 ZHANG Gengwang,SONG Jiajie.Impact of Moisture Content and Filling Soil Content on Shear Strength of Loose Rock Mass[J].HIGH SPEED RAILWAY TECHNOLOGY,2023,14(05):34-39.[doi:10.12098/j.issn.1674-8247.2023.05.007]
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含水率及填充土含量对松散岩堆体抗剪强度的影响规律()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
14卷
期数:
2023年05期
页码:
34-39
栏目:
出版日期:
2023-11-20

文章信息/Info

Title:
Impact of Moisture Content and Filling Soil Content on Shear Strength of Loose Rock Mass
文章编号:
1674-8247(2023)05-0034-06
作者:
张赓旺1宋嘉杰2
1.兰州交通大学,? 兰州730070;2.宁夏宁东铁路有限公司,? 银川750001
Author(s):
ZHANG Gengwang1SONG Jiajie2
1.Lanzhou Jiaotong University ,Lanzhou? 730070 ,China;2.Ningxia Ningdong Railway Co. ,Ltd ,Yinchuan? 750001 ,China
关键词:
岩堆三轴试验剪切强度含水率填充土含量
Keywords:
talustriaxial testshear strengthmoisture contentfilling soil content
分类号:
U45
DOI:
10.12098/j.issn.1674-8247.2023.05.007
文献标志码:
A
摘要:
通过室内三轴试验,分析了不同含水率及填充土含量对岩堆体剪切特性的影响,结果表明:(1)随着填充土含量的增加,粘聚力表现出先略有减小后显著增加的变化趋势,在25%时可取得极值,而内摩擦角呈近似线性的减小关系;(2)当含水率从5%增加到12%时,粘聚力均呈现出增加趋势;然而含水率从12%增加到19%时,粘聚力逐渐降低;(3)随着含水率的增加,内摩擦角不断减小。当含水率为5%时,随着填充土含量的增加,抗剪强度先增加后减小;当含水率为12%时,填充土含量增加,抗剪强度先减小后增加,且围压越大,这种规律越明显;当含水率为19%时,随着填充土含量的变化,不同围压下的抗剪强度呈现出不同的变化趋势,但仍是围压越大,抗剪强度越大。
Abstract:
Through indoor triaxial tests,the impact of different moisture contents and filling soil contents on the shear characteristics of rock piles was analyzed. The results showed that:(1)With the increase of filling soil content,the cohesion initially slightly decreased and then increased significantly,reaching a maximum at 25%,while the internal friction angle showed an approximately linear decreasing relationship. (2)When the moisture content increased from 5%to 12%,the cohesion showed an increasing trend. From 12% to 19% moisture content,the cohesion gradually decreased with the increase in moisture content. (3)With the increase in moisture content,the internal friction angle decreased continuously. When the moisture content was 5%,the increase in filling soil content initially increased and then decreased the shear strength. When the moisture content was 12%,the increase in filling soil content initially decreased and then increased the shear strength,with the trend becoming more pronounced with higher confining pressure. When the moisture content was 19%,the variation in shear strength with the change in filling soil content showed different trends under different confining pressures,but with higher confining pressure,the shear strength was generally higher.

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备注/Memo

备注/Memo:
收稿日期:2023-09-09
作者简介:张赓旺(1997-),男,硕士研究生。
更新日期/Last Update: 2023-11-20