Loading device of explosive stress wave in high confining pressure and dynamic response of composite structure

Liu, Chenkang; Yue, Songlin; Wang, Mingyang; Li, Jie; Deng, Shuxin; Zhang, Guokai; Ji, Yuguo; Li, Zhihao; Xu, Tianhan

doi:10.1016/j.compstruct.2020.113198

Cited by 3 publications

(2 citation statements)

References 28 publications

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“…Such research has enriched the theoretical system of surrounding rock control. Furthermore, scholars have used different experimental and numerical methods to collate a large number of field application cases [16][17][18][19][20]; this is also expected to serve as a reference for future research in this field. Researchers have reported that the principal stress has a significant influence on the stability of roadway surrounding rocks [21][22][23][24].…”

Section: Engineering Backgroundmentioning

confidence: 99%

Comprehensive Study on Surrounding Rock Failure Characteristics of Longwall Roadway and Control Techniques

Yang

Huang

et al. 2021

Applied Sciences

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Research on underground coal mines has primarily focused on the stability of roadways. Mining activities lead to significant damage to the surrounding rocks and also degrade the support to the roadways. Considering the 21309 roadway of the Huojitu coal mine as a case study, this work comprehensively analyzed the characteristics of the surrounding rock using three methods: theoretical calculations, FLAC3D numerical modeling, and field observations. The results indicate that, under the influence of secondary mining, the failure range and stress concentration degree of the surrounding rock are considerably higher than those under the influence of primary mining. In this case, the maximum damage range in the surrounding rock can reach 1.8 m, the maximum principal stress can reach 19.82 MPa, and the ratio of the maximum principal stress to the minimum principal stress can reach 1.95. According to the results, the previous support design for roadways was optimized and applied in the field. Field monitoring revealed that the roadway deformation was effectively controlled, and the optimized support design was safe and reliable. This study is expected to serve as a reference for support designs or optimization under similar geological conditions.

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Section: Engineering Backgroundmentioning

confidence: 99%

Comprehensive Study on Surrounding Rock Failure Characteristics of Longwall Roadway and Control Techniques

Yang

Huang

et al. 2021

Applied Sciences

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“…They necessitate careful consideration in the realm of deep engineering construction. Explosive loading is acknowledged to manifest in two distinct modes [4]. The initial mode entails the blast stress wave, which triggers the formation of primary networks of fractures within the medium.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Study of the Dynamic Crack Behavior of Brittle Material Induced by Blast Waves

Yu,

Zou,

Sun

et al. 2023

Materials

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Blast stress waves profoundly impact engineering structures, exciting and affecting the rupture process in brittle construction materials. A novel numerical model was introduced to investigate the initiation and propagation of cracks subjected to blast stress waves within the borehole-crack configuration. Twelve models were established with different crack lengths to simulate sandstone samples. The influence of crack length on crack initiation and propagation was investigated using those models. The linear equation of state was used to express the relationship between the pressure and density of the material. The major principal stress failure criterion was used to evaluate the failure of elements. A triangular pressure curve was adopted to produce the blast stress wave. The results indicated that the pre-crack length critically influenced the crack initiation and propagation mechanism by analyzing the stress history at the crack tip, crack propagation velocity, and distance. The inducement of a P-wave and S-wave is paramount in models with a short pre-crack. For long pre-crack models, Rayleigh waves significantly contribute to crack propagation.

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The dynamic response of composite auxetic re-entrant honeycomb structure subjected to underwater impulsive loading

Liu,

Luo,

et al. 2024

International Journal of Impact Engineering

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Loading device of explosive stress wave in high confining pressure and dynamic response of composite structure

Cited by 3 publications

References 28 publications

Comprehensive Study on Surrounding Rock Failure Characteristics of Longwall Roadway and Control Techniques

Comprehensive Study on Surrounding Rock Failure Characteristics of Longwall Roadway and Control Techniques

A Numerical Study of the Dynamic Crack Behavior of Brittle Material Induced by Blast Waves

The dynamic response of composite auxetic re-entrant honeycomb structure subjected to underwater impulsive loading

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