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- W3210918702 abstract "Goaf-side roadway driving with narrow coal pillars could obviously improve the coal recovery rates compared to traditional wide pillars of 15–40 m. However, it is difficult to control the stability of goaf-side roadway driving, especially in the deep island coal working face. To control the stability using fully mechanized caving, working face 4206 in Jianxin Coal Mine in the Shaanxi Province of China, field investigation, theoretical analysis, and numerical simulation were performed to obtain the main influencing factors of the surrounding rock deformation and reveal the characteristics of stress distribution, plastic zones, and deformations of the surrounding rock of roadways with coal pillars of different widths. Results show that the main influencing factors of surrounding rock deformation of roadways in the island working face 4206 in Jianxin Coal Mine include large, buried depth, thick coal seam, large coal pillars, and island working face with high stress concentration. Moreover, the reasonable coal pillar width is 8 m. The stress concentration and the damage of the 8-m-wide coal pillar are smaller, and the corresponding deformation is lower than that of the other pillars, which is beneficial to the stability of the Goaf-side roadway driving." @default.
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- W3210918702 date "2021-10-01" @default.
- W3210918702 modified "2023-09-23" @default.
- W3210918702 title "Study on Reasonable Coal Pillar Width of Goaf-side Roadway Driving in Deep Island Working Face with Fully Mechanized Caving Mining" @default.
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- W3210918702 doi "https://doi.org/10.1088/1755-1315/861/5/052053" @default.
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