Study on Asymmetric Failure and Control Measures of Lining in Deep Large Section Chamber
| Autor: | Bei Jiang, Yubing Huang, Xiang Gao, Jincheng Zang, Ma Yukun, Huayong Wei |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Control and Optimization Materials science 0211 other engineering and technologies Energy Engineering and Power Technology 02 engineering and technology Electrical and Electronic Engineering Engineering (miscellaneous) 021102 mining & metallurgy 021101 geological & geomatics engineering control measures Deformation (mechanics) Renewable Energy Sustainability and the Environment business.industry Structural engineering mechanical analysis Field monitoring Core (optical fiber) Mechanism (engineering) Section (archaeology) asymmetric failure Bending moment Maximum displacement business Displacement (fluid) Energy (miscellaneous) deep chamber |
| Zdroj: | Energies, Vol 14, Iss 4075, p 4075 (2021) Energies Volume 14 Issue 14 |
| ISSN: | 1996-1073 |
| Popis: | Lining is often used as the last line of defense in deep large section chamber. Under the asymmetric load, it is easy to damage, resulting in the overall repair of the chamber. Aiming at this problem, taking the pump house in Wanfu Coal Mine under construction in China as an engineering example, we analyzed the asymmetric failure of pump house lining caused by construction disturbance, established the lining mechanical model and quantitative evaluation indexes, such as bending moment change rate, bending moment balance rate, displacement change rate and displacement balance rate, studied the influence mechanism of asymmetrical coefficient, section size and lining thickness on the mechanical behavior of lining, and proposed the control measures of deep large section chamber with the core of “strengthening asymmetric support, reducing section size and improving lining strength”. The field monitoring shows that the asymmetric deformation of the pump house is effectively controlled, and the maximum displacement is only 7.3 mm, which ensures the long-term stability of the chamber. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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