Mechanical Properties of Functionally Graded Concrete Lining for Deep Underground Structures
With the mining depth of coal resources increasing, the thickness of traditional lining for deep mines becomes large. The bearing capacity of the outer lining cannot be fully utilized, so a new type of functionally graded lining structure (FGL) with radial Young’s modulus varying in gradient is prop...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/2363989 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832551558015877120 |
|---|---|
| author | De-Chun Li Chong Xu Zhen-Dong Cui Jin-Ming Chen Xiang-Qing Xu Tong-Tong Zhang Zhao-Wei Zhang Gang Song |
| author_facet | De-Chun Li Chong Xu Zhen-Dong Cui Jin-Ming Chen Xiang-Qing Xu Tong-Tong Zhang Zhao-Wei Zhang Gang Song |
| author_sort | De-Chun Li |
| collection | DOAJ |
| description | With the mining depth of coal resources increasing, the thickness of traditional lining for deep mines becomes large. The bearing capacity of the outer lining cannot be fully utilized, so a new type of functionally graded lining structure (FGL) with radial Young’s modulus varying in gradient is proposed. In this study, through theoretical analysis and numerical simulation, the mechanical properties of the functionally graded lining were studied, including the characteristics of the elastic working state and the ultimate bearing state. The influences of the structural parameters of the functionally graded lining, including the inner radius, the thickness, Young’s modulus, the compressive strength of the concrete, Poisson’s ratio, and the number of layers on the mechanical properties were analyzed. The calculation formula of the ultimate bearing capacity of the lining and the calculation formula of the maximum tangential strain at the time of lining failure were put forward. The accuracy of the formula was verified by comparing with the numerical simulation results. The research results provide the basis for the construction of the design theory of a functionally graded lining structure and have great engineering significance for the construction of the kilometer-deep mines in the future. |
| format | Article |
| id | doaj-art-ab14ac75ae624f4ba6aab02f05b75de6 |
| institution | Kabale University |
| issn | 1687-8094 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-ab14ac75ae624f4ba6aab02f05b75de62025-02-03T06:01:09ZengWileyAdvances in Civil Engineering1687-80942022-01-01202210.1155/2022/2363989Mechanical Properties of Functionally Graded Concrete Lining for Deep Underground StructuresDe-Chun Li0Chong Xu1Zhen-Dong Cui2Jin-Ming Chen3Xiang-Qing Xu4Tong-Tong Zhang5Zhao-Wei Zhang6Gang Song7China Coal Construction Group Co., Ltd.State Key Laboratory for Geomechanics and Deep Underground EngineeringState Key Laboratory for Geomechanics and Deep Underground EngineeringChina Coal Tianjin Design Engineering Co.,Ltd.China Coal Tianjin Design Engineering Co.,Ltd.State Key Laboratory for Geomechanics and Deep Underground EngineeringChina Coal Tianjin Design Engineering Co.,Ltd.China Coal Tianjin Design Engineering Co.,Ltd.With the mining depth of coal resources increasing, the thickness of traditional lining for deep mines becomes large. The bearing capacity of the outer lining cannot be fully utilized, so a new type of functionally graded lining structure (FGL) with radial Young’s modulus varying in gradient is proposed. In this study, through theoretical analysis and numerical simulation, the mechanical properties of the functionally graded lining were studied, including the characteristics of the elastic working state and the ultimate bearing state. The influences of the structural parameters of the functionally graded lining, including the inner radius, the thickness, Young’s modulus, the compressive strength of the concrete, Poisson’s ratio, and the number of layers on the mechanical properties were analyzed. The calculation formula of the ultimate bearing capacity of the lining and the calculation formula of the maximum tangential strain at the time of lining failure were put forward. The accuracy of the formula was verified by comparing with the numerical simulation results. The research results provide the basis for the construction of the design theory of a functionally graded lining structure and have great engineering significance for the construction of the kilometer-deep mines in the future.http://dx.doi.org/10.1155/2022/2363989 |
| spellingShingle | De-Chun Li Chong Xu Zhen-Dong Cui Jin-Ming Chen Xiang-Qing Xu Tong-Tong Zhang Zhao-Wei Zhang Gang Song Mechanical Properties of Functionally Graded Concrete Lining for Deep Underground Structures Advances in Civil Engineering |
| title | Mechanical Properties of Functionally Graded Concrete Lining for Deep Underground Structures |
| title_full | Mechanical Properties of Functionally Graded Concrete Lining for Deep Underground Structures |
| title_fullStr | Mechanical Properties of Functionally Graded Concrete Lining for Deep Underground Structures |
| title_full_unstemmed | Mechanical Properties of Functionally Graded Concrete Lining for Deep Underground Structures |
| title_short | Mechanical Properties of Functionally Graded Concrete Lining for Deep Underground Structures |
| title_sort | mechanical properties of functionally graded concrete lining for deep underground structures |
| url | http://dx.doi.org/10.1155/2022/2363989 |
| work_keys_str_mv | AT dechunli mechanicalpropertiesoffunctionallygradedconcreteliningfordeepundergroundstructures AT chongxu mechanicalpropertiesoffunctionallygradedconcreteliningfordeepundergroundstructures AT zhendongcui mechanicalpropertiesoffunctionallygradedconcreteliningfordeepundergroundstructures AT jinmingchen mechanicalpropertiesoffunctionallygradedconcreteliningfordeepundergroundstructures AT xiangqingxu mechanicalpropertiesoffunctionallygradedconcreteliningfordeepundergroundstructures AT tongtongzhang mechanicalpropertiesoffunctionallygradedconcreteliningfordeepundergroundstructures AT zhaoweizhang mechanicalpropertiesoffunctionallygradedconcreteliningfordeepundergroundstructures AT gangsong mechanicalpropertiesoffunctionallygradedconcreteliningfordeepundergroundstructures |