Applications and Procedures for Inspection and Rehabilitation of Hydro and Water Conveyance Tunnels.

التفاصيل البيبلوغرافية
العنوان: Applications and Procedures for Inspection and Rehabilitation of Hydro and Water Conveyance Tunnels.
المؤلفون: Havekost, M., Sozer, Z. B., Chohan, K., Spreng, S., Crouthamel, D.
المصدر: EA National Conference Publications; 2023, p371-379, 9p
مصطلحات موضوعية: WATER power, TUNNEL design & construction, ENVIRONMENTAL risk assessment, STRUCTURAL dynamics, HYDRAULIC engineering
مستخلص: Hydropower and water conveyance tunnels are critical assets. Assessing their condition and performing necessary repairs on a routine basis are needed to ensure long-term, reliable performance and sustainability over their design life. Inspections should be made on routinely scheduled intervals to baseline the condition of the tunnels and monitor their condition to prevent deterioration to levels that threaten their operational design criteria and long-term reliability. Excessive deterioration can result in environmental risks, reduction in flow performance, damage to downstream facilities, or the need for extensive repairs and extended outages, which can be difficult to manage in the design life of the tunnel. Means to monitor these assets can be constrained by physical access or the ability to unwater the facility, which can be a factor of redundant water supply, mechanical limitations, or structural concerns. Considerations for inspection means can include remotely operated vehicles or physical access. Inspections should include the ability to make structural and hydraulic assessments, including leakage monitoring, and to assess the condition of the tunnel relative to its operational conditions. This paper discusses the various inspection applications for water and hydropower tunnels, including how to manage governing aspects such as confined-space entry or gassy conditions, and typical rehabilitation methods. Structural and hydraulic conditions, which can be a risk, are also described. [ABSTRACT FROM AUTHOR]
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