Analysis on the interception effect of neosinocalamus affinis on small falling rocks

Haidong CHEN; Siqiao YE; Bin ZENG; Lizhou ZHANG; Kailin CUI; Bei LIU; Liping XIN

doi:10.16031/j.cnki.issn.1003-8035.202206024

Volume 34 Issue 5

Oct. 2023

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The Chinese Journal of Geological Hazard and Control > 2023 > 34(5): 97-106. > DOI: 10.16031/j.cnki.issn.1003-8035.202206024

CHEN Haidong，YE Siqiao，ZENG Bin，et al. Analysis on the interception effect of neosinocalamus affinis on small falling rocks[J]. The Chinese Journal of Geological Hazard and Control，2023，34(5): 97-106. DOI: 10.16031/j.cnki.issn.1003-8035.202206024

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Analysis on the interception effect of neosinocalamus affinis on small falling rocks

Haidong CHEN^{1, 2,},
Siqiao YE^{1, 3, ,},
Bin ZENG^{1, 3},
Lizhou ZHANG¹,
Kailin CUI¹,
Bei LIU¹,
Liping XIN¹

1.
School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing　400074, China
2.
Chongqing Expressway Group Co. Ltd., Chongqing　401121, China
3.
Key Laboratory of Geological Hazards Mitigation for Mountainous Highway and Waterway, Chongqing Municipal Education Commission, Chongqing Jiaotong University, Chongqing　400074, China

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Received Date: June 19, 2022
Revised Date: October 08, 2022
Available Online: October 15, 2023

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Abstract

Abstract

Dangerous rock disaster is prevalent geological hazard in southwest China. Under the influence of gravity, dangerous rock masses can easily trigger rockfalls, posing a significant threat to infrastructure such as roads, bridges, and railways. Therefore, it is crucial to effectively intercept rockfalls. Common interception facilities, including stone-blocking trenches, stone-blocking nets, and retaining walls, are often constrained by terrain and construction limitations, making it difficult to implement them on a large scale and resulting in reduced interception effectiveness. The southwestern region of China is rich in Cizhu bamboo, which exhibits rapid growth, strong reproductive capabilities, and resistance to bending, rendering it highly effective in intercepting falling rocks. This study employs a combination of model testing and numerical simulation to investigate the impact resistance of Cizhu bamboo and proposes a strategy for using Cizhu bamboo to intercept small-scale rockfalls. The research findings are as follows: (1) The energy requirements of Cizhu bamboo increase with diameter and wall thickness, while decreasing with age, length-to-weight ratio, and aspect ratio. (2) A cluster of Cizhu bamboo can consume a minimum of 3975.55 J and a maximum of 10890.88 J of energy during impact resistance. (3) Utilizing the CRockfall software, the interception effect of Cizhu bamboo on rockfalls is calculated, indicating that a slope with a height of 43 m and a dangerous rock of 0.5 m in diameter requires the planting of 2 rows, 3 lines, and 6 clusters of Cizhu bamboo.
- neosinocalamus affinis,
- dangerous rock disaster,
- dangerous rock treatment,
- shock energy,
- numerical simulation

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References

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Analysis on the interception effect of neosinocalamus affinis on small falling rocks

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