| Autor: |
Aghchai, M. Hazrati, Macklin, S., Macintosh, K., Duffy, B., Narsey, A. |
| Předmět: |
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| Zdroj: |
EA National Conference Publications; 2023, p603-612, 10p |
| Abstrakt: |
The 250 MW Kidston Pumped Hydroelectric Storage (PHES) Project located in Queensland, is currently under construction and is the first pumped hydro project in Australia for over 40 years. It is also the first to convert a disused mine site into a PHES scheme. The project uses two former mining pits (Wises and Eldridge) as the upper and lower reservoirs respectively, which are connected to the underground power generation complex by two water ways comprising twin intake pressure shafts, pressure tunnels, tailrace tunnels and an underground power and transformer cavern. Other underground excavations include 1.7 km of Main Access Tunnel (MAT), ventilation and cable shafts and five construction adits. With reference to a wide span Y-junction in the MAT this paper describes the methods used to characterize the rock mass for design, and more importantly the validation of the design through careful field observation comprising routine face mapping and continuous high-resolution laser scanning techniques. Issues such as adequate characterization of in situ stress to intact strength ratios and validation of scale-dependent discontinuity strength and stiffness are also discussed. Many of the outcomes of this project will be relevant to other planned pump storage projects in Australia. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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