Squeezing failure behavior of roof‐coal masses in a gob‐side entry driven under unstable overlying strata
Abstract This paper endeavors to reveal the squeezing failure mechanism of roof‐coal masses and its correlation with the movement of the roof strata. An integrated method incorporating field instruments and numerical modeling was conducted. The borehole camera detection revealed that the development...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-07-01
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| Series: | Energy Science & Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/ese3.678 |
| _version_ | 1828432181199896576 |
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| author | Guangchao Zhang Lianjun Chen Zhijie Wen Miao Chen Guangzhe Tao You Li Hao Zuo |
| author_facet | Guangchao Zhang Lianjun Chen Zhijie Wen Miao Chen Guangzhe Tao You Li Hao Zuo |
| author_sort | Guangchao Zhang |
| collection | DOAJ |
| description | Abstract This paper endeavors to reveal the squeezing failure mechanism of roof‐coal masses and its correlation with the movement of the roof strata. An integrated method incorporating field instruments and numerical modeling was conducted. The borehole camera detection revealed that the development degree and scope of cracks in the roof strata on the coal pillar side are significantly larger than that on the panel rib side, and the fracture line of the main roof occurred above the coal pillar. A rigorous modeling procedure verified the borehole camera detection results and also found that the vertical and horizontal displacement of the roof‐coal mass exhibited asynchronous development characteristics at various heights. Subsequently, a comprehensive control strategy was proposed to prevent the squeezing failure behavior of roof‐coal masses in DUOS gob‐side entry. This study provides a basis for understanding the squeezing failure behavior of roof‐coal masses, and the proposed control strategy can potentially be applied in other similar mining projects. |
| first_indexed | 2024-12-10T18:16:28Z |
| format | Article |
| id | doaj.art-8dd8b28146944f35b7e0f13cdd8a756c |
| institution | Directory Open Access Journal |
| issn | 2050-0505 |
| language | English |
| last_indexed | 2024-12-10T18:16:28Z |
| publishDate | 2020-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Energy Science & Engineering |
| spelling | doaj.art-8dd8b28146944f35b7e0f13cdd8a756c2022-12-22T01:38:19ZengWileyEnergy Science & Engineering2050-05052020-07-01872443245610.1002/ese3.678Squeezing failure behavior of roof‐coal masses in a gob‐side entry driven under unstable overlying strataGuangchao Zhang0Lianjun Chen1Zhijie Wen2Miao Chen3Guangzhe Tao4You Li5Hao Zuo6State Key Laboratory of Mining Disaster Prevention and Control Shandong University of Science and Technology Qingdao ChinaState Key Laboratory of Mining Disaster Prevention and Control Shandong University of Science and Technology Qingdao ChinaState Key Laboratory of Mining Disaster Prevention and Control Shandong University of Science and Technology Qingdao ChinaState Key Laboratory of Mining Disaster Prevention and Control Shandong University of Science and Technology Qingdao ChinaState Key Laboratory of Mining Disaster Prevention and Control Shandong University of Science and Technology Qingdao ChinaState Key Laboratory of Mining Disaster Prevention and Control Shandong University of Science and Technology Qingdao ChinaState Key Laboratory of Mining Disaster Prevention and Control Shandong University of Science and Technology Qingdao ChinaAbstract This paper endeavors to reveal the squeezing failure mechanism of roof‐coal masses and its correlation with the movement of the roof strata. An integrated method incorporating field instruments and numerical modeling was conducted. The borehole camera detection revealed that the development degree and scope of cracks in the roof strata on the coal pillar side are significantly larger than that on the panel rib side, and the fracture line of the main roof occurred above the coal pillar. A rigorous modeling procedure verified the borehole camera detection results and also found that the vertical and horizontal displacement of the roof‐coal mass exhibited asynchronous development characteristics at various heights. Subsequently, a comprehensive control strategy was proposed to prevent the squeezing failure behavior of roof‐coal masses in DUOS gob‐side entry. This study provides a basis for understanding the squeezing failure behavior of roof‐coal masses, and the proposed control strategy can potentially be applied in other similar mining projects.https://doi.org/10.1002/ese3.678borehole camera detectionnumerical modelingroof‐coal massessqueezing failure |
| spellingShingle | Guangchao Zhang Lianjun Chen Zhijie Wen Miao Chen Guangzhe Tao You Li Hao Zuo Squeezing failure behavior of roof‐coal masses in a gob‐side entry driven under unstable overlying strata Energy Science & Engineering borehole camera detection numerical modeling roof‐coal masses squeezing failure |
| title | Squeezing failure behavior of roof‐coal masses in a gob‐side entry driven under unstable overlying strata |
| title_full | Squeezing failure behavior of roof‐coal masses in a gob‐side entry driven under unstable overlying strata |
| title_fullStr | Squeezing failure behavior of roof‐coal masses in a gob‐side entry driven under unstable overlying strata |
| title_full_unstemmed | Squeezing failure behavior of roof‐coal masses in a gob‐side entry driven under unstable overlying strata |
| title_short | Squeezing failure behavior of roof‐coal masses in a gob‐side entry driven under unstable overlying strata |
| title_sort | squeezing failure behavior of roof coal masses in a gob side entry driven under unstable overlying strata |
| topic | borehole camera detection numerical modeling roof‐coal masses squeezing failure |
| url | https://doi.org/10.1002/ese3.678 |
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