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Strainburst and AE Properties of Sandstone Supported by Negative Poisson’s Ratio (NPR) Cable under True Triaxial Loading
https://orcid.org/https://orcid.org/0000-0001-9847-6733
Supporting and controlling rockburst hazards is a great challenge for deep rock engineering. A new cable, the negative Poisson’s ratio (NPR) cable, exhibits excellent mechanical properties, including high energy absorption and resilience to impacts. To investigate its control effect on rockburst, a series of true triaxial strainburst experiments were conducted on sandstone specimens under different anchoring conditions (no support, ordinary support, NPR cable support). The model NPR cables were developed based on similar principles. In addition, the acoustic emission response and fragmentation characteristics were analysed. The experimental results indicate that the NPR cables are capable of co-deforming with the rock and absorbing energy, increasing rock strength and promoting internal rock tensile fracture. The rapid response of the NPR cables during rockbursts provided effective support, exerted better impact resistance and significantly reduced the mass and fractal dimension of the ejected fragments. Thus, NPR cables can reduce kinetic energy release and effectively control rockburst hazards compared to ordinary cables. The aim of this paper is to provide a reference for the design of rockburst support in engineering.
Strainburst and AE Properties of Sandstone Supported by Negative Poisson’s Ratio (NPR) Cable under True Triaxial Loading
https://orcid.org/https://orcid.org/0000-0001-9847-6733
Supporting and controlling rockburst hazards is a great challenge for deep rock engineering. A new cable, the negative Poisson’s ratio (NPR) cable, exhibits excellent mechanical properties, including high energy absorption and resilience to impacts. To investigate its control effect on rockburst, a series of true triaxial strainburst experiments were conducted on sandstone specimens under different anchoring conditions (no support, ordinary support, NPR cable support). The model NPR cables were developed based on similar principles. In addition, the acoustic emission response and fragmentation characteristics were analysed. The experimental results indicate that the NPR cables are capable of co-deforming with the rock and absorbing energy, increasing rock strength and promoting internal rock tensile fracture. The rapid response of the NPR cables during rockbursts provided effective support, exerted better impact resistance and significantly reduced the mass and fractal dimension of the ejected fragments. Thus, NPR cables can reduce kinetic energy release and effectively control rockburst hazards compared to ordinary cables. The aim of this paper is to provide a reference for the design of rockburst support in engineering.
Strainburst and AE Properties of Sandstone Supported by Negative Poisson’s Ratio (NPR) Cable under True Triaxial Loading
https://orcid.org/https://orcid.org/0000-0001-9847-6733
Supporting and controlling rockburst hazards is a great challenge for deep rock engineering. A new cable, the negative Poisson’s ratio (NPR) cable, exhibits excellent mechanical properties, including high energy absorption and resilience to impacts. To investigate its control effect on rockburst, a series of true triaxial strainburst experiments were conducted on sandstone specimens under different anchoring conditions (no support, ordinary support, NPR cable support). The model NPR cables were developed based on similar principles. In addition, the acoustic emission response and fragmentation characteristics were analysed. The experimental results indicate that the NPR cables are capable of co-deforming with the rock and absorbing energy, increasing rock strength and promoting internal rock tensile fracture. The rapid response of the NPR cables during rockbursts provided effective support, exerted better impact resistance and significantly reduced the mass and fractal dimension of the ejected fragments. Thus, NPR cables can reduce kinetic energy release and effectively control rockburst hazards compared to ordinary cables. The aim of this paper is to provide a reference for the design of rockburst support in engineering.
Strainburst and AE Properties of Sandstone Supported by Negative Poisson’s Ratio (NPR) Cable under True Triaxial Loading
KSCE J Civ Eng
Hu, Jie (author) / He, Manchao (author) / Li, Hongru (author) / Cheng, Tai (author) / Tao, Zhigang (author) / Liu, Dongqiao (author) / Li, Chunxiao (author)
KSCE Journal of Civil Engineering ; 28 ; 4067-4075
2024-09-01
9 pages
Article (Journal)
Electronic Resource
English
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