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The results indicate that the internal stress distribution within the coal pillar is influenced by the advanced support stress, and as the working face advances, the gradually increasing advanced support pressure causes the vertical stress peak within the coal pillar to shift away from the goaf area. Computational analysis reveals that the vertical stress in the top region of a 6\u00a0m narrow coal pillar is 38% higher than that in the bottom region, with an average stress of 16\u00a0MPa in the coal pillar. The asymmetric high-level stress concentration within the coal pillar significantly affects its stability. A UDEC (Universal Distinct Element Code) model was established to compare four simulation schemes with cut-off angles of 0\u00b0, 5\u00b0, 10\u00b0, and 15\u00b0. Based on the analysis of damage parameters and fracture distribution in the narrow coal pillar roadway, it was concluded that the stability is best when the cut-off angle is 10\u00b0. The dense drilling cut-off unloading technology was applied to the 4309 working face of the Changping Mine based on the aforementioned research. On-site monitoring results show that the relative deformation of the roof and bottom plates and the two sides of the test section were controlled within 267\u00a0mm and 198\u00a0mm, respectively, effectively resolving the deformation and instability issues of the narrow coal pillars.<\/jats:p>","DOI":"10.1038\/s41598-024-67412-z","type":"journal-article","created":{"date-parts":[[2024,7,19]],"date-time":"2024-07-19T11:02:51Z","timestamp":1721386971000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Study on the instability mechanism and control technology of narrow coal pillar in double-roadway layout of Changping mine"],"prefix":"10.1038","volume":"14","author":[{"given":"Tian","family":"Cai","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gang","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qinghe","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junpeng","family":"Zou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2024,7,19]]},"reference":[{"key":"67412_CR1","doi-asserted-by":"publisher","first-page":"189","DOI":"10.1016\/j.ijmst.2019.03.003","volume":"30","author":"G Feng","year":"2020","unstructured":"Feng, G. & Wang, P. 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