Rupture and Migration Law of Disturbed Overburden during Slicing Mining of Steeply Dipping Thick Coal Seam
Steeply inclined and thick coal seams in Huainan Panbei Coal Mine in Anhui Province, China, were analyzed by physical analog modeling, acoustic emission (AE), and distributed fiber sensing (DBS). The secondary deformation breakage law, sound, and light response characteristics in the rock mass defor...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8863547 |
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| author | Shuai Liu Ke Yang Chunan Tang Xiaolou Chi |
| author_facet | Shuai Liu Ke Yang Chunan Tang Xiaolou Chi |
| author_sort | Shuai Liu |
| collection | DOAJ |
| description | Steeply inclined and thick coal seams in Huainan Panbei Coal Mine in Anhui Province, China, were analyzed by physical analog modeling, acoustic emission (AE), and distributed fiber sensing (DBS). The secondary deformation breakage law, sound, and light response characteristics in the rock mass deformation process induced by lower slice mining of steeply inclined coal seams were determined. The results show that the mutation of the hinged rock beam structure in the lower region and the cantilever beam structure in the upper region of the lower slice disturbed overburden is the main cause of the rupture of the workface roof. Based on the AE energy and distributed fiber strain response characteristics, the six stages of disturbed overburden instability in the lower slice and cyclic patterns of steeply inclined coal seams were revealed. The key prevention and control areas of the workface were found to be related to the disturbed high-level immediate roof rupture during the lower slice mining process, rupture of the disturbed main roof, and sliding of disturbed overburden. The three-stage AE positioning morphological characteristics and DBS response stepped jump patterns were analyzed in detail. The research results are considered instrumental in the combined AE and DBS monitoring of deformation and damage of rock and soil structures. |
| format | Article |
| id | doaj-art-d19c5bb7fd2a4874b93211e5aba095cc |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-d19c5bb7fd2a4874b93211e5aba095cc2025-02-03T01:00:27ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88635478863547Rupture and Migration Law of Disturbed Overburden during Slicing Mining of Steeply Dipping Thick Coal SeamShuai Liu0Ke Yang1Chunan Tang2Xiaolou Chi3School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaInstitute of Energy, Hefei Comprehensive National Science Center, Hefei 230031, ChinaSchool of Resources and Civil Engineering, Northeastern University, Shenyang 110819, ChinaInstitute of Energy, Hefei Comprehensive National Science Center, Hefei 230031, ChinaSteeply inclined and thick coal seams in Huainan Panbei Coal Mine in Anhui Province, China, were analyzed by physical analog modeling, acoustic emission (AE), and distributed fiber sensing (DBS). The secondary deformation breakage law, sound, and light response characteristics in the rock mass deformation process induced by lower slice mining of steeply inclined coal seams were determined. The results show that the mutation of the hinged rock beam structure in the lower region and the cantilever beam structure in the upper region of the lower slice disturbed overburden is the main cause of the rupture of the workface roof. Based on the AE energy and distributed fiber strain response characteristics, the six stages of disturbed overburden instability in the lower slice and cyclic patterns of steeply inclined coal seams were revealed. The key prevention and control areas of the workface were found to be related to the disturbed high-level immediate roof rupture during the lower slice mining process, rupture of the disturbed main roof, and sliding of disturbed overburden. The three-stage AE positioning morphological characteristics and DBS response stepped jump patterns were analyzed in detail. The research results are considered instrumental in the combined AE and DBS monitoring of deformation and damage of rock and soil structures.http://dx.doi.org/10.1155/2020/8863547 |
| spellingShingle | Shuai Liu Ke Yang Chunan Tang Xiaolou Chi Rupture and Migration Law of Disturbed Overburden during Slicing Mining of Steeply Dipping Thick Coal Seam Advances in Civil Engineering |
| title | Rupture and Migration Law of Disturbed Overburden during Slicing Mining of Steeply Dipping Thick Coal Seam |
| title_full | Rupture and Migration Law of Disturbed Overburden during Slicing Mining of Steeply Dipping Thick Coal Seam |
| title_fullStr | Rupture and Migration Law of Disturbed Overburden during Slicing Mining of Steeply Dipping Thick Coal Seam |
| title_full_unstemmed | Rupture and Migration Law of Disturbed Overburden during Slicing Mining of Steeply Dipping Thick Coal Seam |
| title_short | Rupture and Migration Law of Disturbed Overburden during Slicing Mining of Steeply Dipping Thick Coal Seam |
| title_sort | rupture and migration law of disturbed overburden during slicing mining of steeply dipping thick coal seam |
| url | http://dx.doi.org/10.1155/2020/8863547 |
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