Model test research and application on control method of cooperative pressure relief by directional roof cutting for roadways with strong dynamic pressure

Jiang, Zhenhua; Jiang, Bei; Wang, Qi; Xue, Haojie; Ma, Yukun

doi:10.1007/s12665-023-11122-8

Cited by 6 publications

(1 citation statement)

References 20 publications

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“…Sun et al [18] studied the deformation and failure mechanism of roadways under dynamic pressure in the entire process from excavation to working face mining, and they proposed a method of combining high pre-stress constant resistance support and roof-cutting technology (HPCR-RC). Jiang et al [19] proposed a collaborative approach to control pressure relief during directional roof cutting in strong roadways subjected to dynamic pressure. They also developed a three-dimensional model testing system to compare the effectiveness of their method with the conventional approach.…”

Section: Introductionmentioning

confidence: 99%

Research on the Failure Mechanism of Surrounding Rock in a Dynamic Pressure Roadway and Active and Passive Coordinated Support Technology

Shan,

Wei,

Wang

et al. 2024

Applied Sciences

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To study the phenomenon of large deformation and the failure of roadways under dynamic pressure, this paper takes the 10607 gas drainage roadway as the research object and presents the results of a theoretical derivation of equations for the boundary of the plastic zone of a dynamic pressure roadway with and without supporting force. The impacts of the mining influence coefficient and supporting force on the plastic zone boundary were explored for various lateral pressure coefficients. As the supporting force was increased, it was observed that there was a slight reduction in the radius of the plastic zone of the dynamic pressure roadway, while its scope and shape barely changed. Based on the failure mechanism of the dynamic pressure roadway, active and passive support technology was proposed, and the support effect was analyzed using FLAC3D 5.0 numerical simulation software for the case of the 10607 gas drainage roadway.

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Section: Introductionmentioning

confidence: 99%

Research on the Failure Mechanism of Surrounding Rock in a Dynamic Pressure Roadway and Active and Passive Coordinated Support Technology

Shan,

Wei,

Wang

et al. 2024

Applied Sciences

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Failure characteristics of overlying strata and mechanism of strong ground pressure during the large‐scale and continuous mining of deep multi working faces

Zhang,

Gao,

Zhang

et al. 2024

Energy Science & Engineering

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In this study, a three‐dimensional large‐scale numerical model is established to investigate the failure characteristics of overlying strata and mechanism of strong ground pressure induced by excavation disturbance from multiple working faces. The characteristics of overlying strata fractures, heights of the caving zone and the fracture zone, and evolution of the stress field are systematically analyzed. The numerical simulation results reveal that the height of the caving zone after mining is 8.1 m, and that of the fracture zone is 27.3 m under the conditions of gently inclined thin coal seams. These findings are consistent with the theoretical results. The fracture development process can be divided into three stages: extensive development of new fractures, partial compaction of fractures, and closure of numerous fractures. In the structure of the post‐mining overlying rock, four stress zones are identified as follows: two zones of stress concentration at both ends of the working face, respectively, a zone of relatively high stress at the middle of the working face with low overlying strata, and a zone of stress fully released at the middle of the working face with high overlying strata. Comprehensive analysis of the maximum vertical stress of the cross section and the stress of the working face indicates that the stress increases significantly when mining enters the gob square stage and the roof does not collapse timely.

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Reused roadway failure mechanism and control strategies: a case study of the Shuangliu Coal Mine, China

Kong,

Huang,

Shan

et al. 2024

Environ Earth Sci

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Model test research and application on control method of cooperative pressure relief by directional roof cutting for roadways with strong dynamic pressure

Cited by 6 publications

References 20 publications

Research on the Failure Mechanism of Surrounding Rock in a Dynamic Pressure Roadway and Active and Passive Coordinated Support Technology

Research on the Failure Mechanism of Surrounding Rock in a Dynamic Pressure Roadway and Active and Passive Coordinated Support Technology

Failure characteristics of overlying strata and mechanism of strong ground pressure during the large‐scale and continuous mining of deep multi working faces

Reused roadway failure mechanism and control strategies: a case study of the Shuangliu Coal Mine, China

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