Study on Stability Control Mechanism of Deep Soft Rock Roadway and Active Support Technology of Bolt-Grouting Flexible Bolt
In order to study the stability control mechanism of deep soft rock roadway and the active support technology of the anchor-grouting flexible bolt, this paper takes the west wing transportation roadway of Yuandian No. 2 Coal Mine of Huaibei Mining Co., Ltd., Huaibei, China as the research background...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/13/3/409 |
| _version_ | 1797609993192603648 |
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| author | Hao Zhang Yingming Li Xiangjun Wang Shoudong Yu Yi Wang |
| author_facet | Hao Zhang Yingming Li Xiangjun Wang Shoudong Yu Yi Wang |
| author_sort | Hao Zhang |
| collection | DOAJ |
| description | In order to study the stability control mechanism of deep soft rock roadway and the active support technology of the anchor-grouting flexible bolt, this paper takes the west wing transportation roadway of Yuandian No. 2 Coal Mine of Huaibei Mining Co., Ltd., Huaibei, China as the research background. By analyzing the occurrence conditions and failure characteristics of the surrounding rock of the west wing transportation roadway and the structural characteristics and mechanical properties of the anchor-grouting flexible bolt, combined with the elastic–plastic and superimposed arch theory analysis, the superposition community theoretical model and the superposition joint support scheme of “bolt (cable) + anchor net + anchor-grouting flexible bolt + shotcrete support” are proposed. The reliability of the combined support scheme is analyzed by FLAC 3D numerical simulation software and field experiment. The results show that the maximum roof-to-floor convergence and two-side convergence of the west wing transportation roadway are only 30.7 mm and 27.1 mm after adopting the combined support scheme, and the deep displacement variation is within 7 mm, which can effectively maintain the stability of the roadway. The combined support scheme has a certain reference value for other similar roadways. |
| first_indexed | 2024-03-11T06:08:14Z |
| format | Article |
| id | doaj.art-529d4575f7a34837ab4b47fed7b942cb |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-11T06:08:14Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-529d4575f7a34837ab4b47fed7b942cb2023-11-17T12:48:11ZengMDPI AGMinerals2075-163X2023-03-0113340910.3390/min13030409Study on Stability Control Mechanism of Deep Soft Rock Roadway and Active Support Technology of Bolt-Grouting Flexible BoltHao Zhang0Yingming Li1Xiangjun Wang2Shoudong Yu3Yi Wang4State Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and Control, Anhui University of Science and Technology, Huainan 232001, ChinaState Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and Control, Anhui University of Science and Technology, Huainan 232001, ChinaState Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and Control, Anhui University of Science and Technology, Huainan 232001, ChinaSuzhou Qinan Industry and Trade Co., Ltd., Suzhou 234000, ChinaState Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and Control, Anhui University of Science and Technology, Huainan 232001, ChinaIn order to study the stability control mechanism of deep soft rock roadway and the active support technology of the anchor-grouting flexible bolt, this paper takes the west wing transportation roadway of Yuandian No. 2 Coal Mine of Huaibei Mining Co., Ltd., Huaibei, China as the research background. By analyzing the occurrence conditions and failure characteristics of the surrounding rock of the west wing transportation roadway and the structural characteristics and mechanical properties of the anchor-grouting flexible bolt, combined with the elastic–plastic and superimposed arch theory analysis, the superposition community theoretical model and the superposition joint support scheme of “bolt (cable) + anchor net + anchor-grouting flexible bolt + shotcrete support” are proposed. The reliability of the combined support scheme is analyzed by FLAC 3D numerical simulation software and field experiment. The results show that the maximum roof-to-floor convergence and two-side convergence of the west wing transportation roadway are only 30.7 mm and 27.1 mm after adopting the combined support scheme, and the deep displacement variation is within 7 mm, which can effectively maintain the stability of the roadway. The combined support scheme has a certain reference value for other similar roadways.https://www.mdpi.com/2075-163X/13/3/409anchor-grouting flexible boltdeep soft rock roadwaysuperimposed communityFLAC 3D numerical simulationcombined support |
| spellingShingle | Hao Zhang Yingming Li Xiangjun Wang Shoudong Yu Yi Wang Study on Stability Control Mechanism of Deep Soft Rock Roadway and Active Support Technology of Bolt-Grouting Flexible Bolt Minerals anchor-grouting flexible bolt deep soft rock roadway superimposed community FLAC 3D numerical simulation combined support |
| title | Study on Stability Control Mechanism of Deep Soft Rock Roadway and Active Support Technology of Bolt-Grouting Flexible Bolt |
| title_full | Study on Stability Control Mechanism of Deep Soft Rock Roadway and Active Support Technology of Bolt-Grouting Flexible Bolt |
| title_fullStr | Study on Stability Control Mechanism of Deep Soft Rock Roadway and Active Support Technology of Bolt-Grouting Flexible Bolt |
| title_full_unstemmed | Study on Stability Control Mechanism of Deep Soft Rock Roadway and Active Support Technology of Bolt-Grouting Flexible Bolt |
| title_short | Study on Stability Control Mechanism of Deep Soft Rock Roadway and Active Support Technology of Bolt-Grouting Flexible Bolt |
| title_sort | study on stability control mechanism of deep soft rock roadway and active support technology of bolt grouting flexible bolt |
| topic | anchor-grouting flexible bolt deep soft rock roadway superimposed community FLAC 3D numerical simulation combined support |
| url | https://www.mdpi.com/2075-163X/13/3/409 |
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