Waterproof pillar size design in steep coal seam
According to different combinations of mining methods and water body positions in deep coal seam, three basic structural patterns were created and main basis of setting up reasonable waterproof coal pillar size for each pattern were proposed. The mechanics model of the stability of waterproof pillar...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Emergency Management Press
2017-08-01
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| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/article/id/78 |
| _version_ | 1811207533544603648 |
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| author | Xu Bin Dong Shuning Xu Yanling |
| author_facet | Xu Bin Dong Shuning Xu Yanling |
| author_sort | Xu Bin |
| collection | DOAJ |
| description | According to different combinations of mining methods and water body positions in deep coal seam, three basic structural patterns were created and main basis of setting up reasonable waterproof coal pillar size for each pattern were proposed. The mechanics model of the stability of waterproof pillar was established, and formulas for critical value of stable length of waterproof pillar were derived. Based on different conditions for each coal mine, the optimization design theory on setting up reasonable waterproof coal pillar size was proposed. The above optimization design theory was applied to a mine in Tangshan. Results showed that the reasonable size of waterproof pillar could be 59.3 m. Actually the steep mining face was safely and successfully exploited with 60 m height of waterproof pillar, indicating that the theory could be useful for practical projects. |
| first_indexed | 2024-04-12T04:06:11Z |
| format | Article |
| id | doaj.art-2cde12b17f6e4efc870134253916f191 |
| institution | Directory Open Access Journal |
| issn | 2096-2193 |
| language | English |
| last_indexed | 2024-04-12T04:06:11Z |
| publishDate | 2017-08-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj.art-2cde12b17f6e4efc870134253916f1912022-12-22T03:48:37ZengEmergency Management Press矿业科学学报2096-21932017-08-0124307315Waterproof pillar size design in steep coal seamXu Bin0Dong Shuning1Xu Yanling2College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083, ChinaCollege of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083, ChinaLogistic Engineering University of PLA, Chongqing 401311, ChinaAccording to different combinations of mining methods and water body positions in deep coal seam, three basic structural patterns were created and main basis of setting up reasonable waterproof coal pillar size for each pattern were proposed. The mechanics model of the stability of waterproof pillar was established, and formulas for critical value of stable length of waterproof pillar were derived. Based on different conditions for each coal mine, the optimization design theory on setting up reasonable waterproof coal pillar size was proposed. The above optimization design theory was applied to a mine in Tangshan. Results showed that the reasonable size of waterproof pillar could be 59.3 m. Actually the steep mining face was safely and successfully exploited with 60 m height of waterproof pillar, indicating that the theory could be useful for practical projects.http://kykxxb.cumtb.edu.cn/article/id/78steep working facewaterproof pillaroptimal designrigid limit balance method |
| spellingShingle | Xu Bin Dong Shuning Xu Yanling Waterproof pillar size design in steep coal seam 矿业科学学报 steep working face waterproof pillar optimal design rigid limit balance method |
| title | Waterproof pillar size design in steep coal seam |
| title_full | Waterproof pillar size design in steep coal seam |
| title_fullStr | Waterproof pillar size design in steep coal seam |
| title_full_unstemmed | Waterproof pillar size design in steep coal seam |
| title_short | Waterproof pillar size design in steep coal seam |
| title_sort | waterproof pillar size design in steep coal seam |
| topic | steep working face waterproof pillar optimal design rigid limit balance method |
| url | http://kykxxb.cumtb.edu.cn/article/id/78 |
| work_keys_str_mv | AT xubin waterproofpillarsizedesigninsteepcoalseam AT dongshuning waterproofpillarsizedesigninsteepcoalseam AT xuyanling waterproofpillarsizedesigninsteepcoalseam |