Difference Analysis of Disaster Types and Grading Control Technologies for Risk of Caving of Coal Roadway Roof
In view of the problem of a caving roof along different parts of the same roadway in a mine, this study classifies the mechanical characteristics of the local instability of the roof based on differences in the rock mass media and types of damage. We determine the factors influencing the quantitativ...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/5527614 |
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| _version_ | 1832566164764491776 |
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| author | Jicheng Feng Zhiheng Cheng Hongbing Wang Jianjun Shi Haoyu Shi Shuaifeng Yin |
| author_facet | Jicheng Feng Zhiheng Cheng Hongbing Wang Jianjun Shi Haoyu Shi Shuaifeng Yin |
| author_sort | Jicheng Feng |
| collection | DOAJ |
| description | In view of the problem of a caving roof along different parts of the same roadway in a mine, this study classifies the mechanical characteristics of the local instability of the roof based on differences in the rock mass media and types of damage. We determine the factors influencing the quantitative relationship between the failure height of the roof and the environment to establish an indicator system for classifying the grades of risk of the roof caving. This is used to predict the height at which the roof caves along the roadway in a coal seam through fuzzy variable weighting analysis. We also develop software for the grading system of risks of caving of the roof and draw a grading map to represent this risk for a roadway in coal seam No. III in Zhaogu Coal Mine No. 2 in Jiaozuo City of Henan Province, China. According to the zoning characteristics of the coal mine, a targeted support design test is carried out in the same intake airway of working face 11030 of the mine. The results show that the proposed classification method conforms to safe practices in underground mining. The stability of the roadway during service and the grades determined using the proposed method were consistent. This has important theoretical significance and practical value for designing support for roadways and timely reinforcements in areas with a high-risk grade to guarantee the safe operation of coal mines. |
| format | Article |
| id | doaj-art-d847656d42474ee1a511f704c179bea8 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-d847656d42474ee1a511f704c179bea82025-02-03T01:05:05ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/55276145527614Difference Analysis of Disaster Types and Grading Control Technologies for Risk of Caving of Coal Roadway RoofJicheng Feng0Zhiheng Cheng1Hongbing Wang2Jianjun Shi3Haoyu Shi4Shuaifeng Yin5School of Safety Engineering, North China Institute of Science and Technology, Beijing 101601, ChinaSchool of Safety Engineering, North China Institute of Science and Technology, Beijing 101601, ChinaState Key Laboratory of High-Efficiency Mining and Safety of Metal Mines, Ministry of Education, School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Safety Engineering, North China Institute of Science and Technology, Beijing 101601, ChinaSchool of Safety Engineering, North China Institute of Science and Technology, Beijing 101601, ChinaSchool of Safety Engineering, North China Institute of Science and Technology, Beijing 101601, ChinaIn view of the problem of a caving roof along different parts of the same roadway in a mine, this study classifies the mechanical characteristics of the local instability of the roof based on differences in the rock mass media and types of damage. We determine the factors influencing the quantitative relationship between the failure height of the roof and the environment to establish an indicator system for classifying the grades of risk of the roof caving. This is used to predict the height at which the roof caves along the roadway in a coal seam through fuzzy variable weighting analysis. We also develop software for the grading system of risks of caving of the roof and draw a grading map to represent this risk for a roadway in coal seam No. III in Zhaogu Coal Mine No. 2 in Jiaozuo City of Henan Province, China. According to the zoning characteristics of the coal mine, a targeted support design test is carried out in the same intake airway of working face 11030 of the mine. The results show that the proposed classification method conforms to safe practices in underground mining. The stability of the roadway during service and the grades determined using the proposed method were consistent. This has important theoretical significance and practical value for designing support for roadways and timely reinforcements in areas with a high-risk grade to guarantee the safe operation of coal mines.http://dx.doi.org/10.1155/2021/5527614 |
| spellingShingle | Jicheng Feng Zhiheng Cheng Hongbing Wang Jianjun Shi Haoyu Shi Shuaifeng Yin Difference Analysis of Disaster Types and Grading Control Technologies for Risk of Caving of Coal Roadway Roof Shock and Vibration |
| title | Difference Analysis of Disaster Types and Grading Control Technologies for Risk of Caving of Coal Roadway Roof |
| title_full | Difference Analysis of Disaster Types and Grading Control Technologies for Risk of Caving of Coal Roadway Roof |
| title_fullStr | Difference Analysis of Disaster Types and Grading Control Technologies for Risk of Caving of Coal Roadway Roof |
| title_full_unstemmed | Difference Analysis of Disaster Types and Grading Control Technologies for Risk of Caving of Coal Roadway Roof |
| title_short | Difference Analysis of Disaster Types and Grading Control Technologies for Risk of Caving of Coal Roadway Roof |
| title_sort | difference analysis of disaster types and grading control technologies for risk of caving of coal roadway roof |
| url | http://dx.doi.org/10.1155/2021/5527614 |
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