Stability Control of Multilayer Roof Strata in the Large Mining Height Gob-Side Entry: A Case Study
Roof separation, destabilization and collapse of multilayer roof structures are difficult to control in large mining height gob-side entries due to severe mining pressure. In the 22301 working face in Tunlan Mine, a mining height of 4.75 m posed great challenges to gob-side entry retaining technique...
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2024-12-01
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| author | Yong Chen Yingpeng Wang Zhengyuan Qin Feng Yang Vivek Agarwal |
| author_facet | Yong Chen Yingpeng Wang Zhengyuan Qin Feng Yang Vivek Agarwal |
| author_sort | Yong Chen |
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| description | Roof separation, destabilization and collapse of multilayer roof structures are difficult to control in large mining height gob-side entries due to severe mining pressure. In the 22301 working face in Tunlan Mine, a mining height of 4.75 m posed great challenges to gob-side entry retaining techniques. Through mechanical analysis, the strata movement of a multilayer roof structure was investigated, and numerical analysis was conducted to identify key aspects of the supporting scheme, e.g., ensuring the stability of immediate roof above the filling area, transferring the resistance from the cemented backfill to the roof structure and maintaining self-supporting capacity. A new support strategy was proposed and applied in industrial settings, with entry stability evaluated by monitoring the deformation characteristics, roof separation values and overall support performance. The results showed that the gob-side entry retaining technique was successful in Tunlan Mine, providing valuable insights for similar techniques in large mining height gob-side entries. |
| format | Article |
| id | doaj-art-96f2d4bd32ef42e790450e9240842b0f |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-96f2d4bd32ef42e790450e9240842b0f2025-01-10T13:14:23ZengMDPI AGApplied Sciences2076-34172024-12-011518610.3390/app15010086Stability Control of Multilayer Roof Strata in the Large Mining Height Gob-Side Entry: A Case StudyYong Chen0Yingpeng Wang1Zhengyuan Qin2Feng Yang3Vivek Agarwal4State Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou 221116, ChinaState Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Resources and Safety Engineering, Wuhan Institute of Technology, Wuhan 430079, ChinaSchool of Resources and Safety Engineering, Wuhan Institute of Technology, Wuhan 430079, ChinaEngineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UKRoof separation, destabilization and collapse of multilayer roof structures are difficult to control in large mining height gob-side entries due to severe mining pressure. In the 22301 working face in Tunlan Mine, a mining height of 4.75 m posed great challenges to gob-side entry retaining techniques. Through mechanical analysis, the strata movement of a multilayer roof structure was investigated, and numerical analysis was conducted to identify key aspects of the supporting scheme, e.g., ensuring the stability of immediate roof above the filling area, transferring the resistance from the cemented backfill to the roof structure and maintaining self-supporting capacity. A new support strategy was proposed and applied in industrial settings, with entry stability evaluated by monitoring the deformation characteristics, roof separation values and overall support performance. The results showed that the gob-side entry retaining technique was successful in Tunlan Mine, providing valuable insights for similar techniques in large mining height gob-side entries.https://www.mdpi.com/2076-3417/15/1/86roof separationgob-side entrymultilayer roof structurenumerical simulation |
| spellingShingle | Yong Chen Yingpeng Wang Zhengyuan Qin Feng Yang Vivek Agarwal Stability Control of Multilayer Roof Strata in the Large Mining Height Gob-Side Entry: A Case Study Applied Sciences roof separation gob-side entry multilayer roof structure numerical simulation |
| title | Stability Control of Multilayer Roof Strata in the Large Mining Height Gob-Side Entry: A Case Study |
| title_full | Stability Control of Multilayer Roof Strata in the Large Mining Height Gob-Side Entry: A Case Study |
| title_fullStr | Stability Control of Multilayer Roof Strata in the Large Mining Height Gob-Side Entry: A Case Study |
| title_full_unstemmed | Stability Control of Multilayer Roof Strata in the Large Mining Height Gob-Side Entry: A Case Study |
| title_short | Stability Control of Multilayer Roof Strata in the Large Mining Height Gob-Side Entry: A Case Study |
| title_sort | stability control of multilayer roof strata in the large mining height gob side entry a case study |
| topic | roof separation gob-side entry multilayer roof structure numerical simulation |
| url | https://www.mdpi.com/2076-3417/15/1/86 |
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