Structure and deformation measurements of shallow overburden during top coal caving longwall mining
Mining induced pressures are strong and overburden failure areas are large in top coal caving longwall mining, which constrains high production and safety mining. By employing the combination of the full view borehole photography technique and the seismic CT scanner technique, the deformation and fa...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2017-11-01
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| Series: | International Journal of Mining Science and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095268617305013 |
| _version_ | 1828465428570046464 |
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| author | Sheng Li Chaojun Fan Mingkun Luo Zhenhua Yang Tianwei Lan Haifeng Zhang |
| author_facet | Sheng Li Chaojun Fan Mingkun Luo Zhenhua Yang Tianwei Lan Haifeng Zhang |
| author_sort | Sheng Li |
| collection | DOAJ |
| description | Mining induced pressures are strong and overburden failure areas are large in top coal caving longwall mining, which constrains high production and safety mining. By employing the combination of the full view borehole photography technique and the seismic CT scanner technique, the deformation and failure of overlying strata of fully mechanized caving face in shallow coal seam were studied and the failure development of overburden was determined. Results show that the full view borehole photography can reveal the characteristics of strata, and the seismic CT scanner can reflect the characteristics of strata between the boreholes. The combined measurement technique can effectively determine the height of fractured and caved zones. The top end of the caved zone in Yangwangou coal mine employing the top coal caving longwall mining was at the depth of 171 m and fractured zone was at the depth of 106–110 m. The results provide a theoretic foundation for controlling the overburden strata in the shallow buried top coal caving panel. Keywords: Top coal caving, Shallow depth, Overburden failure and deformation, Full view borehole photography, Seismic CT scanner |
| first_indexed | 2024-12-11T03:32:48Z |
| format | Article |
| id | doaj.art-70cb2a9b25354004bfd582dbb13b766c |
| institution | Directory Open Access Journal |
| issn | 2095-2686 |
| language | English |
| last_indexed | 2024-12-11T03:32:48Z |
| publishDate | 2017-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Mining Science and Technology |
| spelling | doaj.art-70cb2a9b25354004bfd582dbb13b766c2022-12-22T01:22:20ZengElsevierInternational Journal of Mining Science and Technology2095-26862017-11-0127610811085Structure and deformation measurements of shallow overburden during top coal caving longwall miningSheng Li0Chaojun Fan1Mingkun Luo2Zhenhua Yang3Tianwei Lan4Haifeng Zhang5College of Mining, Liaoning Technical University, Fuxin 123000, China; State and Local Joint Engineering Laboratory for Gas Drainage & Ground Control of Deep Mines, Henan Polytechnic University, Jiaozuo 454003, China; State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & Technology, Xuzhou 221116, ChinaCollege of Mining, Liaoning Technical University, Fuxin 123000, China; Corresponding author.College of Mining, Liaoning Technical University, Fuxin 123000, ChinaCollege of Mining, Liaoning Technical University, Fuxin 123000, ChinaCollege of Mining, Liaoning Technical University, Fuxin 123000, ChinaChengyi Coal Mine, Inner Mongolia Yitai Coal Co., Ltd., Ordos 017000, ChinaMining induced pressures are strong and overburden failure areas are large in top coal caving longwall mining, which constrains high production and safety mining. By employing the combination of the full view borehole photography technique and the seismic CT scanner technique, the deformation and failure of overlying strata of fully mechanized caving face in shallow coal seam were studied and the failure development of overburden was determined. Results show that the full view borehole photography can reveal the characteristics of strata, and the seismic CT scanner can reflect the characteristics of strata between the boreholes. The combined measurement technique can effectively determine the height of fractured and caved zones. The top end of the caved zone in Yangwangou coal mine employing the top coal caving longwall mining was at the depth of 171 m and fractured zone was at the depth of 106–110 m. The results provide a theoretic foundation for controlling the overburden strata in the shallow buried top coal caving panel. Keywords: Top coal caving, Shallow depth, Overburden failure and deformation, Full view borehole photography, Seismic CT scannerhttp://www.sciencedirect.com/science/article/pii/S2095268617305013 |
| spellingShingle | Sheng Li Chaojun Fan Mingkun Luo Zhenhua Yang Tianwei Lan Haifeng Zhang Structure and deformation measurements of shallow overburden during top coal caving longwall mining International Journal of Mining Science and Technology |
| title | Structure and deformation measurements of shallow overburden during top coal caving longwall mining |
| title_full | Structure and deformation measurements of shallow overburden during top coal caving longwall mining |
| title_fullStr | Structure and deformation measurements of shallow overburden during top coal caving longwall mining |
| title_full_unstemmed | Structure and deformation measurements of shallow overburden during top coal caving longwall mining |
| title_short | Structure and deformation measurements of shallow overburden during top coal caving longwall mining |
| title_sort | structure and deformation measurements of shallow overburden during top coal caving longwall mining |
| url | http://www.sciencedirect.com/science/article/pii/S2095268617305013 |
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