By Rafael Romeo García, Mario Andreu Mir, Francisco Hijós Bitrián, Raimundo Lafuente Dios, Moisés Rubín de Célix Caballero, Mariano de Andrés Rodríguez-Trelles, Alejandro Carrasco-Mínguez, Maria Soledad Martín-Cleto Sánchez, Miguel Alonso Pérez de Ágreda, Jo
As dams age, they're topic to a sequence of exterior brokers and techniques which are likely to become worse the features with which they have been initially conceived to face opposed to those activities. while, it is usually essential to reply to elevated safeguard criteria, both within the structural or hydrological fields. Reservoir sedimentation or water caliber matters in the reservoir additionally supply bring up to difficulties that needs to be addressed. finally, climatic switch within the administration of water assets, and the necessity for sustainability have essentially develop into new prevalence components with which Dam vendors must coexist within the future.
Therefore it really is noticeable that a rise in price range allocation for remedial and conservation measures is needed, to be able to succeed in the expanding operation, provide and safety features that are being validated. The relevance of this issue is usually emphasised in built nations which personal an enormous history of getting older dams.
In this context, Dam upkeep and Rehabilitation II constitutes an entire assessment of the country of artwork in strategies touching on dam retrofitting and conservation. Contributions are provided both in English or Spanish and correspond to quite a lot of issues regarding dam upkeep, behaviour review and rehabilitation. This shared wisdom and event would certainly be hugely correct for dam teachers and execs in any respect technical and administrative degrees.
Read or Download Dam Maintenance and Rehabilitation II: Proceedings of the 2nd International Congress on Dam Maintenance and Rehabilitation, Zaragoza, Spain, 23-25 November 2010 PDF
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Extra info for Dam Maintenance and Rehabilitation II: Proceedings of the 2nd International Congress on Dam Maintenance and Rehabilitation, Zaragoza, Spain, 23-25 November 2010
The pressure in the upper part of the slide does not seem to be directly connected to the reservoir. High pressures were measured in the rock layer. These values of water pressure probably are a consequence of direct infiltration from rainfall or perhaps the results of other sources of water no well defined, linked to the geological structure of the area. As a summary, the examination of piezometer measurements leads to the following conclusions: 510 Reservoir elevation (m) 500 490 480 470 460 450 440 430 31/12/2009 31/12/2008 31/12/2007 31/12/2006 31/12/2005 31/12/2004 31/12/2003 31/12/2002 31/12/2001 31/12/2000 31/12/1999 420 Time Figure 33.
The effect of water weight on stresses on the slope is also taken into account. Under these conditions, according to limit equilibrium calculations, Canelles slope was strictly stable and instability takes place whenever higher pressures develop in the clay stratum. 09 MPa throughout the failure surface of the lower block. Figure 42a plots the evolution of velocity in time during a displacement of 200 m (Fig. 42b). According to calculations, the slide would accelerate, reaching 12 m/s in a few seconds, after travelling some 300 m inside the reservoir.
Pore water pressure on the failure surface is imposed following the results obtained previously in the coupled analysis. The increase in strength due to suction was neglected in the unsaturated area. 14/10/2009 Date (c) Figure 39. 88 m. indb 21 10/25/2010 10:38:29 AM Figure 40. Calculation section for limit equilibrium analysis and pre-established failure surface in yellow. Figure 41. Calculation section considered for the thermo-hydro-mechanical analysis. Table 5. Safety factors calculated by limit equilibrium analysis.