Task 1d: River basin management Task leader: LNEC; Involved partners - - PowerPoint PPT Presentation

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Task 1d: River basin management Task leader: LNEC; Involved partners - - PowerPoint PPT Presentation

Jun 30, 2023 354 likes •550 views

Task 1d: River basin management Task leader: LNEC; Involved partners EU: ISPRA, DTU, EWA Task 1e: Water for energy Task leader: LNEC; Involved partners EU: DTU, EWA, EDP/Labelec Task 1a: Agricultural Water Management Task leader: ISPRA;

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Task 1d: River basin management Task leader: LNEC; Involved partners EU: ISPRA, DTU, EWA Task 1e: Water for energy Task leader: LNEC; Involved partners EU: DTU, EWA, EDP/Labelec

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  • Implement the measures necessary to prevent or limit the input of pollutants

into groundwater and to prevent the deterioration of the status of all bodies of groundwater ….

  • Contribute to support future decisions in terms of more adequate

policies regarding rural land use planning (type of crops and associated fertilizers and treatment techniques), taking into consideration the protection of the environment based on vulnerability and risk concepts and a sustainable and integrated water management.

In the scope of LNEC investigations on diffuse pollution prevention and monitoring, the main goals have been to: Task 1a: Agricultural Water Management Task leader: ISPRA; Involved partners EU: LNEC, DTU, EWA

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Soil water tension Vadose zone sampling Soil humidity

Groundwater Runoff

Monitoring devices: Runoff, soil, vadose zone, groundwater, surface water

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Runoff: NO3

  • and Electrical cond.

200 400 600 800 1000 1200 1400 1600 NO3 CE NO3 (mg/l) e CE (uS/cm) 25 de Maio 31 de Maio 11 de Junho 18 de Junho 25 de Junho 09 de Julho 16 de Julho 23 de Julho 06 de Agosto 13 de Agosto 20 de Agosto 27 de Agosto 3 de Setembro 10 de Setembro

Herdade da Mancoca Cultura do milho NO3

50 100 150 200 250 300 350 400 450 500 550 600 20 40 60 Profundidade (cm) Nitratos (mg/l) 25-05-2006 16-06-2006 22-06-2006 28-07-2006 07-08-2006 30-08-2006 07-09-2006 13-09-2006

Vadose zone: NO3

  • Monitoring results: runoff and vadose zone
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Transport modelling Scenario 1A (in 2015) Scenario 4D (in 2015) Numerical modelling of land use scenarios: groundwater content in nitrates in 2015

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Innovative groundwater artificial recharge techniques and experiments. Schemes to solve WR problems in EU and China semi arid regions****

***João Paulo Lobo Ferreira (lferreira@lnec.pt)

*http://www.marsol.eu Task 1d: River basin management Task leader: LNEC; Involved partners EU: ISPRA, DTU, EWA

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ARTIFICIAL AQUIFER RECHARGE EXPERIMENTS IN THE PORTUGUESE CAMPINA DE FARO CASE-STUDY AREA, DEVELOPED IN THE FRAMEWORK OF GABARDINE PROJECT

M12 - AQUIFER SYSTEM OF CAMPINA DE FARO

Almeida et al (2000) SNIRH http://snirh.inag.pt

Algarve region

Aquifer system of Campina de Faro

area 86 km2

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  • Methodology to identify preliminary candidate areas to

implement artificial recharge (GABA-IFI Index)

  • Artificial recharge infiltration and tracer tests in Campina de Faro
Curva de chegada do traçador ao piezómetro LNEC1 durante o ensaio realizado em Maio na Bacia de Carreiros 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 2 09 2 21 3 09 3 21 4 09 4 21 5 09 5 21 6 09 6 21 7 09 7 21 8 09 8 21 9 09 9 21 10 09 10 21 11 09 11 21 12 09 12 21 13 09 13 21 14 09 14 21 15 09 15 21 16 09 16 21 17 09 17 21 18 09 Dia/hora Condutividade eléctrica (us/cm) Cl e NO3 (mg/L) 4 5 6 7 8 9 10 11 12 Profundidade ao nível (m) Condutividade eléctrica (us/cm) Cl (mg/L) NO3 (mg/L) Profundidade ao nível - valor observado (m) Profundidade ao nível - valor registado (m) Fim do ensaio 11/05 16h:25 Inicio do ensaio de infiltração 03/05 15h:45 Colocação do traçador na bacia 08/05 09h:35 Chegada do traçador (29 a 66 horas)

Main Results/Conclusions

Parâmetros de qualidade da água medidos no piezómetro LNEC1, durante a estação seca (Carreiros) 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 19-07 23-07 27-07 31-07 04-08 08-08 12-08 16-08 20-08 24-08 28-08 01-09 05-09 09-09 13-09 17-09 21-09 25-09 Condutividade eléctrica (us/cm) Cl (mg/L) 5 10 15 20 25 30 35 40 45 50 55 NO3 (mg/L) Cl (mg/L) Condutividade eléctrica (us/cm) NO3 (mg/L) Escoamento superficial no rio Alteração causada por ocorrência de escoamanto superficial e infiltração da água do rio nas bacias

2B) Areal Gordo test site Injection test in medium diameter well 1) Areal Gordo test site 3 Infiltration basins 3) Carreiros test site 2 Infiltration basins in the river bed 2A) Areal Gordo test site Injection tests in large diameter well “nora”

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Experimental facilities

Laboratório de ensaios de lixiviação e apoio à monitorização de águas subterrâneas: LASUB

Artificial Aquifer Facility (AA) Flume for studies with fish steps 20 m long flume for studies with turbidity currents Flume to study steeped spillways 10 m long flume for flood studies in compound river channels Flume to study non conventional spillways for earth fill dams Laboratory for Pollutant Leaching Experiments and Fieldwork Preparation: LASUB 40 m long tilting flume

  • 5000 m2 indoor

area Pumping capacities up to 700 l/s

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ControlSed – CONTROL OF SEDIMENTATION IN RESERVOIRS INDUCED BY TURBITY

CURRENTS

,00 ,500 1,00 1,500 2,00 2,500 ,00 ,100 ,200 ,300 ,400

z/h

Cs / Cs0

Concentration Profiles J

S.B6 J S.B7 J S.B8 J S.B9 J 0,5 1 1,5 2 2,5 3

  • 0,5

0,5 1 1,5 z/H u/U

Velocity Profiles A.02

T3 T4 T5 T6 T7

Main objectives: Blocking the sedimentation of fine sediments in reservoirs Study the efficiency of placing an obstacle on the bottom of a reservoir to control the deposition of fine sediments Flow structure of turbidity currents interacting Numerical model to predict the effects of obstacles on real reservoirs

Research Projects

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COMPLEX - EXPERIMENTAL STUDY ON LOCAL SCOUR AROUND COMPLEX

BRIDGE PIERS

Main objectives:

  • Methodology to estimate the scour depth

around complex piers

  • Laboratory tests at 3 Universities and LNEC
  • Design Manual and Short Course

Research Projects

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CALIBRATION OF NUMERICAL MODELING BASED ON PHYSICAL MODELS

CASE STUDY: SALAMONDE DAM COMPLEMENTARY SPILLWAY PHYSICAL MODEL

Main objectives:

  • Calibration of numerical models using experimental data;
  • Comparison of flow height obtained in the numerical model

with the observations in the physical model;

  • Use of “Flow 3D” to calculate, along the structure:
  • pressures, water levels, jet impact, velocity fields.

Research Projects

Physical Model Numerical Model

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  • 5. Research Projects

NUMERICAL MODELING OF COMPLEX FLOWS IN HYDRAULIC STRUCTURES

STUDY CASES: FOZ TUA DAM WATER INTAKE, SALAMONDE II WATER INTAKE AND SURGE TANK

Main objetives:

  • Calibration of CFD numerical models using experimental and

physical models

  • New measurement and flow visualization techniques (UVPs,

ADVs, PIV)

  • Study of alternative design forms
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PIRE – Modeling Flood Hazards and Morphological Impacts of Levee Breach and Dam Failure Main objectives:

  • Development of a conceptual model for dam breaching
  • Mathematical modelling of breaching processes on earth

dam failures caused by overtopping

  • Development of advanced experimental techniques to

measure dam breaching and flow

  • Intense laboratorial program on earth dam failures

Research Projects

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Dam Foundation in Rock Masses

  • Foundation treatment
  • Hydromechanical behaviour
  • Safety evaluation up to rupture of the rock masses

Baixo Sabor dam Fridão dam Alto Tâmega dam Drainage boreholes Grouting curtain Alqueva dam

Task 1e: Water for energy Task leader: LNEC; Involved partners EU: DTU, EWA, EDP/Labelec

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In the scope of LNEC investigations on safety control

  • f large dams it was recently

installed in Cabril dam a long- term dynamic monitoring system.

 to study the time evolution of the main modal parameters (natural frequencies, modal damping and mode shapes)  to study the correlation between changes in the modal parameters and structural changes due to deterioration processes  to study the dynamic dam response under ambient/operational excitation and under seismic loads  to study the influence of the reservoir on the structural dynamic behavior of the system dam-foundation-reservoir  to calibrate/validate finite element models in order to obtain reliable numerical tools for the assessment of the dam safety The measured acceleration records can be used:

Monitoring and modeling the dynamic behavior

  • f concrete dams
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Analysis of swelling processes in concrete dams

Cracking patterns (Alto Ceira dam) Swelling computations in function of the temperature and moisture fields (Pracana dam) Analysis over time (Santa Luzia dam)

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LNEC Participants and Acknowledgements

  • Co-funding of the project by the European Commission within the

Horizon 2020 Programme under Grant agreement number: 642433 is kindly acknowledged.

  • LNEC

Dr.-Ing.Habil. J.P. Lobo-Ferreira (LNEC contact person for PIANO proposal & Task 1d: Managed Aquifer Recharge Strategies and Actions)

  • Dr. Teresa E. Leitão (LNEC Hydraulics and Environment Department contact person for Task

1.a: Agricultural Water Management)

  • Dr. Luís Lamas (LNEC Concrete Dams Department contact person for Task 1.e: Water for

energy)

  • Dr. José Melo (LNEC Hydraulics and Environment Department contact person for Task 1d:

River basin management / dam safety and dam flood risk management)

  • EDP/Labelec
  • Dr. João Pádua (LNEC subcontractor for Task 1.e: Water for energy)