黄土滑坡滑带土剪切蠕变特性试验研究
P642; 滑带土蠕变特性对渐变型边坡时效变形起控制性作用.本文以黄土滑坡滑带土为研究对象,以含水率14％、18％、22％和26％作为控制条件,开展剪切蠕变试验,分析不同含水状态下黄土的应变特征、蠕变速率和长期强度变化规律.研究表明:滑带土在水作用下蠕变现象明显,包含衰减、稳定和加速蠕变阶段,与渐变型滑坡三阶段演化过程相对应;含水状态的增强对黄土蠕变变形和速率的增长起一定的促进作用,含水率的升高可能会使黄土更容易发生蠕变破坏行为;滑带土在四种含水率下的长期强度分别为96.37 kPa、78.04 kPa、65.38 kPa和41.29 kPa,长期强度随含水作用的增强而递减.该研究可为渐变型黄...
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| Published in | 地质与勘探 Vol. 58; no. 6; pp. 1252 - 1260 |
|---|---|
| Main Authors | , |
| Format | Journal Article |
| Language | Chinese |
| Published |
甘肃省交通规划勘察设计院股份有限公司,甘肃兰州 730030%长安大学,地质工程与测绘学院,陕西西安 710054
01.11.2022
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0495-5331 |
| DOI | 10.12134/j.dzykt.2022.06.009 |
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| Abstract | P642; 滑带土蠕变特性对渐变型边坡时效变形起控制性作用.本文以黄土滑坡滑带土为研究对象,以含水率14％、18％、22％和26％作为控制条件,开展剪切蠕变试验,分析不同含水状态下黄土的应变特征、蠕变速率和长期强度变化规律.研究表明:滑带土在水作用下蠕变现象明显,包含衰减、稳定和加速蠕变阶段,与渐变型滑坡三阶段演化过程相对应;含水状态的增强对黄土蠕变变形和速率的增长起一定的促进作用,含水率的升高可能会使黄土更容易发生蠕变破坏行为;滑带土在四种含水率下的长期强度分别为96.37 kPa、78.04 kPa、65.38 kPa和41.29 kPa,长期强度随含水作用的增强而递减.该研究可为渐变型黄土滑坡长期变形及时变稳定性研究提供参考. |
|---|---|
| AbstractList | P642; 滑带土蠕变特性对渐变型边坡时效变形起控制性作用.本文以黄土滑坡滑带土为研究对象,以含水率14％、18％、22％和26％作为控制条件,开展剪切蠕变试验,分析不同含水状态下黄土的应变特征、蠕变速率和长期强度变化规律.研究表明:滑带土在水作用下蠕变现象明显,包含衰减、稳定和加速蠕变阶段,与渐变型滑坡三阶段演化过程相对应;含水状态的增强对黄土蠕变变形和速率的增长起一定的促进作用,含水率的升高可能会使黄土更容易发生蠕变破坏行为;滑带土在四种含水率下的长期强度分别为96.37 kPa、78.04 kPa、65.38 kPa和41.29 kPa,长期强度随含水作用的增强而递减.该研究可为渐变型黄土滑坡长期变形及时变稳定性研究提供参考. |
| Author | 常波 谭维佳 |
| AuthorAffiliation | 甘肃省交通规划勘察设计院股份有限公司,甘肃兰州 730030%长安大学,地质工程与测绘学院,陕西西安 710054 |
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| Author_FL | TAN Weijia CHANG Bo |
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| Author_xml | – sequence: 1 fullname: 常波 – sequence: 2 fullname: 谭维佳 |
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| Keywords | 黄土 长期强度 滑带土 剪切蠕变 渐变型滑坡 含水率 |
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| Title | 黄土滑坡滑带土剪切蠕变特性试验研究 |
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