Research on the full-section anchor cable and C-shaped tube support system of mining roadway in island coal faces

Shan, Renliang; Huang, Pengcheng; Yuan, Honghu; Meng, Chi; Zhang, Shupeng

doi:10.1080/13467581.2020.1869556

Cited by 9 publications

(5 citation statements)

References 19 publications

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“…In response to issues such as anchor cable fractures, the Nanguan Mine adopted a full-section ACC support scheme. Field investigations revealed a smooth surface along the entire supporting section, and no anchor cable failure occurred within the ACC [35]. Combining the results of numerical simulations and field research, it can be concluded that the ACC exhibits superior resistance to shear deformation compared to anchor cables, making it an effective solution for controlling roadway deformation.…”

Section: Comparison Of Acc and Anchor Cable Support Effectmentioning

confidence: 79%

“…Because of the inadequate shear strength of its free portion when an anchor cable support is being used, it cannot play a stronger supporting role. However, the anchor cable with a C-shaped tube (hereinafter referred to as the "ACC") developed by Shan et al [34][35][36] has the characteristics of high prestress and high shear performance, and is a new type of mining supporting component material. Currently, the ACC has been applied in the engineering field, but there is little research on its mechanical properties and the numerical simulation of its engineering applications.…”

Section: Introductionmentioning

confidence: 99%

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Study on Asymmetric Support of Anchor Cable with C-Shaped Tube in Inclined Coal Seam Roadway

Shan

Liu

et al. 2023

Applied Sciences

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In view of the complex asymmetric deformation characteristics of inclined coal seam roadways and the tensed shear failure of anchor cable supports, the asymmetric support scheme of an anchor cable with a C-shaped tube is proposed. In order to study its supporting effect on an inclined coal seam roadway, this paper first explores the difference in shear performance between an anchor cable with a C-shaped tube and an anchor cable through double shear tests. Then, based on the asymmetric deformation characteristics of an inclined coal seam roadway in the Pangpangta Mine, a numerical simulation is used to study the asymmetric support effect of an anchor cable with a C-shaped tube in an inclined coal seam roadway. The results of the double shear test show that the anchor cable with the C-shaped tube has stronger resistance to shear load than that of the anchor cable. Through the results of the numerical simulation, the original stress field distribution on both sides of the roadway was found to be uneven due to the influence of the coal seam dip angle, and after the excavation of the inclined coal seam roadway, the displacement and plastic zone distribution on both sides showed obvious asymmetric characteristics. Compared with the symmetric support, the asymmetric support can obviously alleviate the asymmetric deformation characteristics of the two sides and effectively control the deformation and plastic failure zone of the roadway. The anchor cable with the C-shaped tube has better resistance to shear deformation than that of the anchor cable. The anchor cable with the C-shaped tube can reduce the deformation and plastic area of the roadway more effectively.

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Section: Comparison Of Acc and Anchor Cable Support Effectmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Study on Asymmetric Support of Anchor Cable with C-Shaped Tube in Inclined Coal Seam Roadway

Shan

Liu

et al. 2023

Applied Sciences

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“…Their study results showed that the shear stress of anchors experienced an alternate change process from strong to weak, from weak to strong, and finally, from strong to weak. Tong et al [12] and Shan et al [13][14][15][16][17][18] proposed a combination of anchors and C-shaped canals for conducting double-shear tests. Their results proved that anchors and C-shaped canals could improve the transverse shear capacity of supporting materials during the shear process and strengthen the axial ultimate bearing capacity of anchors.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of Protection Device for Anchor Cable Pull-Out in High-Stress Roadways

Guo,

Tu,

Dang

2023

Applied Sciences

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In regions with high-stress roadway stress, anchor cables frequently experience damage, leading to risky pull-outs and ejections. This study aimed to determine the dynamics of such incidents, refine protective devices, and validate their efficacy in enhancing safety. Drawing from an ejection accident in the 1632 (3) roadway of Pan San Mine, a combination of laboratory experiments, theoretical analysis, simulations, and field applications was utilized. The kinetic energy and speed of cable ejections were determined from single-axis tension test data. Based on these insights, a spring-based protection device was conceptualized. Subsequent experiments and simulations evaluated the energy absorption and deformation characteristics of these devices with different diameters. The results included the following: A cable, during ejection, moved at 48 m/s. Spring protective devices of 4 mm can absorb more energy than the 5 mm, but the anti-ejection effect is poor respectively. Increasing the device diameter improved its performance, especially in controlling spring deformation rate and preventing cable lock-ups. This devised protection mechanism showed promising results when implemented in the 1511 (1) roadway of Zhangji Mine.

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“…Wang [4] found that having a reasonable coal pillar size of the gob-side roadway in an isolated face can not only prevent dynamic disasters in the excavation process, but also improve the utilization rates of resources. Shan and Zhang [5,6] constructed a mechanical model of "gob-coal pillar-roadway-solid coal" at the position of a gob-side roadway. Zhao [7] studied the stress distribution and prevention of rock burst during isolated panel mining under irregular remaining coal pillars.…”

Section: Introductionmentioning

confidence: 99%

Research on Stress Distribution Regularity and Support Optimization of an “Umbrella” Coal Pillar in a Gob-Side Roadway Based on Irregular Gob

2022

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Aiming at the phenomenon of a large amount of roof subsidence and rib caving in the gob-side roadway under the special “umbrella” coal pillar in isolated panel No. 325 of Yangcun Coal Mine, the stress distribution regularity of the gob-side roadway under a “umbrella” coal pillar was studied in detail by establishing mathematical models, theoretical analysis, and numerical simulations. The results show that the following: (1) The stress distribution regularity of the irregular coal pillar is actually the mechanical structure of irregular gob. (2) The abutment pressure of the gob is always distributed vertically along the edge of the gob. When the edge of the gob intersects diagonally with the gob roadway, the stress distribution of the surrounding rock of the roadway cannot be calculated only by the width of the coal pillar—the angle between the edge of the gob and the roadway should also be considered. (3) The abutment pressure at each cusp position in irregular gob extends in the opposite direction of the bisection cusp line, which may lead to peak stress concentration area in gob roadways with solid coal on both sides, and even roof caving and sidewall deviation disasters.

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Research on the full-section anchor cable and C-shaped tube support system of mining roadway in island coal faces

Cited by 9 publications

References 19 publications

Study on Asymmetric Support of Anchor Cable with C-Shaped Tube in Inclined Coal Seam Roadway

Study on Asymmetric Support of Anchor Cable with C-Shaped Tube in Inclined Coal Seam Roadway

Analysis and Design of Protection Device for Anchor Cable Pull-Out in High-Stress Roadways

Research on Stress Distribution Regularity and Support Optimization of an “Umbrella” Coal Pillar in a Gob-Side Roadway Based on Irregular Gob

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