Water Softening Mechanism and Strength Model for Saturated Carbonaceous Mudstone in Panzhihua Airport, China
To identify the water softening mechanisms that caused landslides in Panzhihua Airport, China, property and saturation tests of the mudstones extracted from a representative landslide were proposed. In this paper, water saturation tests were carried out on samples of carbonaceous mudstone collected...
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Series: | Advances in Civil Engineering |
Online Access: | http://dx.doi.org/10.1155/2020/8874201 |
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doaj-51e75f82ea4d4feb99078e89228d43af2020-12-21T11:41:28ZengHindawi LimitedAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88742018874201Water Softening Mechanism and Strength Model for Saturated Carbonaceous Mudstone in Panzhihua Airport, ChinaZiwen Wang0Jifang Du1Shuaifeng Wu2Yingqi Wei3Jianzhang Xiao4Wenxi Han5Di Pan6Binbin Zheng7State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100048, ChinaSchool of Management Science and Engineering, Shandong Technology and Business University, Yantai 264005, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100048, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100048, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100048, ChinaCollege of Environment and Civil Engineering, Chendu University of Technology, Chengdu, ChinaCollege of Environment and Civil Engineering, Chendu University of Technology, Chengdu, ChinaSchool of Management Science and Engineering, Shandong Technology and Business University, Yantai 264005, ChinaTo identify the water softening mechanisms that caused landslides in Panzhihua Airport, China, property and saturation tests of the mudstones extracted from a representative landslide were proposed. In this paper, water saturation tests were carried out on samples of carbonaceous mudstone collected from the east side of the No. 12 landslide at the airport. A number of different analytical techniques and mechanical tests were used to determine changes in chemical composition, mineral assemblages, and mudstone structural characteristics, including shear strength, after the mudstone had been softened. Three kinds of changes caused by water and three mudstone softening stages are proposed. The results show that the water has a significant influence on the properties of the mudstone, so the stability of the mudstone in the watery period is a big threat to the upper structure. A model for water immersion mudstone strength softening is developed. The model incorporates a permeability coefficient, the hydraulic gradient, and time; the model can be used to determine the mudstone’s shear strength and internal friction angle. This study provides a reference for the study of rock softened by water immersion.http://dx.doi.org/10.1155/2020/8874201 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ziwen Wang Jifang Du Shuaifeng Wu Yingqi Wei Jianzhang Xiao Wenxi Han Di Pan Binbin Zheng |
spellingShingle |
Ziwen Wang Jifang Du Shuaifeng Wu Yingqi Wei Jianzhang Xiao Wenxi Han Di Pan Binbin Zheng Water Softening Mechanism and Strength Model for Saturated Carbonaceous Mudstone in Panzhihua Airport, China Advances in Civil Engineering |
author_facet |
Ziwen Wang Jifang Du Shuaifeng Wu Yingqi Wei Jianzhang Xiao Wenxi Han Di Pan Binbin Zheng |
author_sort |
Ziwen Wang |
title |
Water Softening Mechanism and Strength Model for Saturated Carbonaceous Mudstone in Panzhihua Airport, China |
title_short |
Water Softening Mechanism and Strength Model for Saturated Carbonaceous Mudstone in Panzhihua Airport, China |
title_full |
Water Softening Mechanism and Strength Model for Saturated Carbonaceous Mudstone in Panzhihua Airport, China |
title_fullStr |
Water Softening Mechanism and Strength Model for Saturated Carbonaceous Mudstone in Panzhihua Airport, China |
title_full_unstemmed |
Water Softening Mechanism and Strength Model for Saturated Carbonaceous Mudstone in Panzhihua Airport, China |
title_sort |
water softening mechanism and strength model for saturated carbonaceous mudstone in panzhihua airport, china |
publisher |
Hindawi Limited |
series |
Advances in Civil Engineering |
issn |
1687-8086 1687-8094 |
publishDate |
2020-01-01 |
description |
To identify the water softening mechanisms that caused landslides in Panzhihua Airport, China, property and saturation tests of the mudstones extracted from a representative landslide were proposed. In this paper, water saturation tests were carried out on samples of carbonaceous mudstone collected from the east side of the No. 12 landslide at the airport. A number of different analytical techniques and mechanical tests were used to determine changes in chemical composition, mineral assemblages, and mudstone structural characteristics, including shear strength, after the mudstone had been softened. Three kinds of changes caused by water and three mudstone softening stages are proposed. The results show that the water has a significant influence on the properties of the mudstone, so the stability of the mudstone in the watery period is a big threat to the upper structure. A model for water immersion mudstone strength softening is developed. The model incorporates a permeability coefficient, the hydraulic gradient, and time; the model can be used to determine the mudstone’s shear strength and internal friction angle. This study provides a reference for the study of rock softened by water immersion. |
url |
http://dx.doi.org/10.1155/2020/8874201 |
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