Effect of reinforcement layers on tailings sand with mud interlayer

DOI

10.2991/978-94-6463-429-7_32How to use a DOI?

Keywords

mud interlayer; reinforcement layers; reinforced position; reinforcement density; tailings sand

Abstract

In order to understand the influence of reinforcement layers on the mechanical properties of tailings sand with mud interlayers, tailings sand from a tailings pond in Yunnan were used as the main experimental material, and mesh glass fiber was used as the reinforcement material. The effects of reinforcement density and reinforcement position on the tailings sand with mud interlayers were analyzed through different reinforcement schemes. The results show that: (1) The existence of mud interlayer reduces the shear strength of tailings sand, and the influence of mud interlayer on the cohesion of tailings sand is greater than that on the internal friction angle; (2) Regardless of where the reinforcement layers are placed in the test specimens, the shear strength and peak deviator stress of the test specimens increase with the increase of reinforcement density, while the peak pore pressure of the test specimens decreases with the increase of reinforcement density. Moreover, the increament in shear strength and peak deviator stress, as well as the reduction amplitude in peak pore pressure, will vary depending on the location of the reinforcement; (3) The improvement degree of the reinforcement layers on the shear strength, peak deviator stress, and peak pore pressure of the test specimens is shown as follows: at the interface > inside the interlayer > inside the tailings fine sand. The research results can not only provide scientific basis for the rational layout of the reinforcement layers of the tailings dam reinforcement engineering, it can also provide reference for the reinforcement scheme of slope with weak zone, and even provide reference for the reinforcement of other structures with weak interlayer.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Xiugui Yang
AU  - Changshu Pan
AU  - Xu Hu
PY  - 2024
DA  - 2024/06/07
TI  - Effect of reinforcement layers on tailings sand with mud interlayer
BT  - Proceedings of the 2024 7th International Conference on Structural Engineering and Industrial Architecture (ICSEIA 2024)
PB  - Atlantis Press
SP  - 299
EP  - 314
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-429-7_32
DO  - 10.2991/978-94-6463-429-7_32
ID  - Yang2024
ER  -