Study on the Stability Principle of Mechanical Structure of Roadway with Composite Roof
With the typical composite roof roadway and roof fall accidents in the Guizhou Province of China as the research background, the expression of damage parameters of composite roof was deduced according to Weibull statistical distribution, generalized Hooke’s law and Mises yield criterion, and the inf...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/11/9/1003 |
| _version_ | 1797518068948140032 |
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| author | Yang Yu Jianfei Lu Dingchao Chen Yuxin Pan Xiangqian Zhao Lianying Zhang |
| author_facet | Yang Yu Jianfei Lu Dingchao Chen Yuxin Pan Xiangqian Zhao Lianying Zhang |
| author_sort | Yang Yu |
| collection | DOAJ |
| description | With the typical composite roof roadway and roof fall accidents in the Guizhou Province of China as the research background, the expression of damage parameters of composite roof was deduced according to Weibull statistical distribution, generalized Hooke’s law and Mises yield criterion, and the influence of shape and scale parameters of Weibull on damage characteristic was discussed. Based on the infinite slab theory, the expressions of deflection and layer separation of each layer of the composite roof were obtained, the critical load expression of each delamination was determined, and the influence of roadway width, overlying strata load, elastic modulus, shape parameters and scale parameters on the stability of composite roof was explored. The research shows that the bolt support can effectively reduce the layer separation between the composite roofs and enhance the stability of the composite roof. On this basis, it is proposed that for the surrounding rock control problem of roadways with composite roof, the active support technology with bolts as the core should be adopted. |
| first_indexed | 2024-03-10T07:25:00Z |
| format | Article |
| id | doaj.art-4c1382aea9514124b011cccb41930661 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T07:25:00Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-4c1382aea9514124b011cccb419306612023-11-22T14:21:51ZengMDPI AGMinerals2075-163X2021-09-01119100310.3390/min11091003Study on the Stability Principle of Mechanical Structure of Roadway with Composite RoofYang Yu0Jianfei Lu1Dingchao Chen2Yuxin Pan3Xiangqian Zhao4Lianying Zhang5School of Civil Engineering, Xuzhou University of Technology, Xuzhou 221111, ChinaSchool of Civil Engineering, Xuzhou University of Technology, Xuzhou 221111, ChinaSchool of Mining Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Civil Engineering, Xuzhou University of Technology, Xuzhou 221111, ChinaSchool of Mining Engineering, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Civil Engineering, Xuzhou University of Technology, Xuzhou 221111, ChinaWith the typical composite roof roadway and roof fall accidents in the Guizhou Province of China as the research background, the expression of damage parameters of composite roof was deduced according to Weibull statistical distribution, generalized Hooke’s law and Mises yield criterion, and the influence of shape and scale parameters of Weibull on damage characteristic was discussed. Based on the infinite slab theory, the expressions of deflection and layer separation of each layer of the composite roof were obtained, the critical load expression of each delamination was determined, and the influence of roadway width, overlying strata load, elastic modulus, shape parameters and scale parameters on the stability of composite roof was explored. The research shows that the bolt support can effectively reduce the layer separation between the composite roofs and enhance the stability of the composite roof. On this basis, it is proposed that for the surrounding rock control problem of roadways with composite roof, the active support technology with bolts as the core should be adopted.https://www.mdpi.com/2075-163X/11/9/1003composite roofmechanical modelbolt supportweibull distribution |
| spellingShingle | Yang Yu Jianfei Lu Dingchao Chen Yuxin Pan Xiangqian Zhao Lianying Zhang Study on the Stability Principle of Mechanical Structure of Roadway with Composite Roof Minerals composite roof mechanical model bolt support weibull distribution |
| title | Study on the Stability Principle of Mechanical Structure of Roadway with Composite Roof |
| title_full | Study on the Stability Principle of Mechanical Structure of Roadway with Composite Roof |
| title_fullStr | Study on the Stability Principle of Mechanical Structure of Roadway with Composite Roof |
| title_full_unstemmed | Study on the Stability Principle of Mechanical Structure of Roadway with Composite Roof |
| title_short | Study on the Stability Principle of Mechanical Structure of Roadway with Composite Roof |
| title_sort | study on the stability principle of mechanical structure of roadway with composite roof |
| topic | composite roof mechanical model bolt support weibull distribution |
| url | https://www.mdpi.com/2075-163X/11/9/1003 |
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