Evolution Mechanism of Thickly Sticky Loose Layered Arch Structure and Prediction Method of Initial Ground Fissure Caused by Underground Coal Mining
In view of the problem of taking the loose layer as the uniform cloth load while ignoring thickly sticky loose layered arch (TSLLA) of the traditional mining rock overburden structure analysis, combined with the geological conditions of shallow buried thickly sticky loose layer in Shendong mining ar...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2022/4933310 |
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| author | Yang Yingming Li Quansheng Liu Shiliang Zhang Kai Zhao Yongqiang Zhang Guojun Zhang Weilong Liu Gang |
| author_facet | Yang Yingming Li Quansheng Liu Shiliang Zhang Kai Zhao Yongqiang Zhang Guojun Zhang Weilong Liu Gang |
| author_sort | Yang Yingming |
| collection | DOAJ |
| description | In view of the problem of taking the loose layer as the uniform cloth load while ignoring thickly sticky loose layered arch (TSLLA) of the traditional mining rock overburden structure analysis, combined with the geological conditions of shallow buried thickly sticky loose layer in Shendong mining area, the mechanical model of the mining TSLLA bearing structure is established, the variation law of arch height under different loose layers is analyzed, and the formation conditions of TSLLA are given. The first theory deduced the dynamic evolution mechanism of TSLLA structure advancing. The dynamic evolution of TSLLA structure in 22207 coalface is simulated. The formula for the limit height of TSLLA is derived. A classification method of mining loose layer structure is proposed. The loose layer structure type is divided into load type, arch beam type damage type, and limit arch height type. On this basis, the mechanical model of “arch beam” is constructed. The influence mechanism of the TSLLA on the surface cracks is revealed. The methods and calculation steps for initial surface cracks are presented. The results are verified by the measured data of surface subsidence of the typical thickly sticky layer in Shendong mining area. |
| format | Article |
| id | doaj-art-b856b8b665f14c7c8045010a6dcaacf3 |
| institution | Kabale University |
| issn | 1468-8123 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-b856b8b665f14c7c8045010a6dcaacf32025-02-03T01:01:20ZengWileyGeofluids1468-81232022-01-01202210.1155/2022/4933310Evolution Mechanism of Thickly Sticky Loose Layered Arch Structure and Prediction Method of Initial Ground Fissure Caused by Underground Coal MiningYang Yingming0Li Quansheng1Liu Shiliang2Zhang Kai3Zhao Yongqiang4Zhang Guojun5Zhang Weilong6Liu Gang7State Key Laboratory of Water Resource Protection and Utilization in Coal MiningState Key Laboratory of Water Resource Protection and Utilization in Coal MiningSchool of Civil EngineeringState Key Laboratory of Water Resource Protection and Utilization in Coal MiningState Key Laboratory of Water Resource Protection and Utilization in Coal MiningState Key Laboratory of Water Resource Protection and Utilization in Coal MiningShendong Coal Technology Research InstituteShendong Coal Technology Research InstituteIn view of the problem of taking the loose layer as the uniform cloth load while ignoring thickly sticky loose layered arch (TSLLA) of the traditional mining rock overburden structure analysis, combined with the geological conditions of shallow buried thickly sticky loose layer in Shendong mining area, the mechanical model of the mining TSLLA bearing structure is established, the variation law of arch height under different loose layers is analyzed, and the formation conditions of TSLLA are given. The first theory deduced the dynamic evolution mechanism of TSLLA structure advancing. The dynamic evolution of TSLLA structure in 22207 coalface is simulated. The formula for the limit height of TSLLA is derived. A classification method of mining loose layer structure is proposed. The loose layer structure type is divided into load type, arch beam type damage type, and limit arch height type. On this basis, the mechanical model of “arch beam” is constructed. The influence mechanism of the TSLLA on the surface cracks is revealed. The methods and calculation steps for initial surface cracks are presented. The results are verified by the measured data of surface subsidence of the typical thickly sticky layer in Shendong mining area.http://dx.doi.org/10.1155/2022/4933310 |
| spellingShingle | Yang Yingming Li Quansheng Liu Shiliang Zhang Kai Zhao Yongqiang Zhang Guojun Zhang Weilong Liu Gang Evolution Mechanism of Thickly Sticky Loose Layered Arch Structure and Prediction Method of Initial Ground Fissure Caused by Underground Coal Mining Geofluids |
| title | Evolution Mechanism of Thickly Sticky Loose Layered Arch Structure and Prediction Method of Initial Ground Fissure Caused by Underground Coal Mining |
| title_full | Evolution Mechanism of Thickly Sticky Loose Layered Arch Structure and Prediction Method of Initial Ground Fissure Caused by Underground Coal Mining |
| title_fullStr | Evolution Mechanism of Thickly Sticky Loose Layered Arch Structure and Prediction Method of Initial Ground Fissure Caused by Underground Coal Mining |
| title_full_unstemmed | Evolution Mechanism of Thickly Sticky Loose Layered Arch Structure and Prediction Method of Initial Ground Fissure Caused by Underground Coal Mining |
| title_short | Evolution Mechanism of Thickly Sticky Loose Layered Arch Structure and Prediction Method of Initial Ground Fissure Caused by Underground Coal Mining |
| title_sort | evolution mechanism of thickly sticky loose layered arch structure and prediction method of initial ground fissure caused by underground coal mining |
| url | http://dx.doi.org/10.1155/2022/4933310 |
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