2016-09-27
Dams and hydraulic Engineering (Dams and dykes)
- Client: Commune de la Bresse
- Operator: Municipality of Electricity of La Bresse
- Assignment: Assistance to Project Management
- Completion date: 2014-2018
- Total cost of the assignment: 40 k €
PROJECT DESCRIPTION AND CHARACTERISTICS
The La Lande dam is located in the commune of La Bresse, in the department of Vosges (88). This rockfill weir with an upstream bituminous mask creates a reservoir of 660,000 cubic meters. The La Lande dam was built in 1983 to create a large water reservoir for the production of electricity. Subsequently, the reservoir was also used to feed the station’s snow cannons and to supply drinking water to the commune of Bresse. Its main dimensions are as follows:
- Length of the dam: 80 m
- Height on foundation: 17.50 m
- Volume stored on the PHE: 0.7 Million m³
ASSIGNMENT
- Risk Study;
- Study of propagation of submersion wave and mapping of flooded areas in the event of dam failure;
- Update of hydrological and drainage studies;
- Written Instructions;
- Auscultation Reports;
- Monitoring Reports.
2016-09-16
Dams and hydraulic Engineering (Dams and dykes)
- Client: Departement du Cher (18)
- Assignment: Assistance to the client
- Completion date: 2015-2018
- Total cost of the assignment: 30 k €
PROJECT DESCRIPTION AND CHARACTERISTICS
The Goule dam is located in the commune of Bessais-le-Fromental in the department of Cher (18). It is a homogeneous soil embankment dam, with upstream facing consisting of a dry stone wall. Its main dimensions are as follows:
- Length of the dam: 270 m
- Height on foundation: 16 m
- Volume stored on the PHE: 3.8 million m³
ASSIGNMENT
- Monitoring and analysis of auscultation data
- Auscultation Reports
- Advanced Technical Visits
2016-09-16
Dams and hydraulic Engineering (Dams and dykes)
- Client: Municipality of Cenne-Monestiés
- Assignment: Assistance to the project management
- Completion date: 2012 – 2017
- Total cost of the assignment: 60 k €
PROJECT DESCRIPTION AND CHARACTERISTICS
The Cenne-Monestiés dam is a masonry weight dam created in 1883 to meet the water needs of the textile industry. Today the dam is used to supply drinking water to the village. The dam is the property of the commune of Cenne-Monestiés. The site is located in the department of Aude south of the Montagne Noire, about twenty kilometers north-west of Carcassonne, downstream of the Lampy dam and on the river of the same name.
The Cenne-Monestiés dam presents a slight curvature in plan (radius of curvature of 250 m). Its ridge length is 95 m. The height above the natural ground is 22 m for a normal holding volume of 95’500 m3.
ASSIGNMENT
- Monitoring and biannual reports
- Monitoring and analysis of auscultation data
- Drafting of biennial auscultation reports
- Advanced Technical Visits
- Underwater exam supervision
- Security review
- Hazards study
- Hydrological and drainage studies
- Stability study with three-dimensional modeling of the dam
2016-09-16
Dams and hydraulic Engineering (Dams and dykes)
- Client: Collectivité Eau du Bassin Rennais (CEBR)
- Assignment: Assistance to the client
- Operator: Local Public Company (SPL) Eau du Bassin Rennais
- Completion date: 2015 – 2019
- Total cost of the assignment: 30 k €
PROJECT DESCRIPTION AND CHARACTERISTICS
Built between 1973 and 1975, with a flooding in 1976, the Chèze dam can store a maximum volume of 14.5 million m³. It is an embankment dam with a tightly sloped inclined core in clay loam materials. It has a maximum height above its foundations of 41 m and length in ridge of 260 m.
ASSIGNMENT
- Monitoring and analysis of auscultation data
- Preparation of an annual report on auscultation
- Advanced Technical Visits
- Full Technical Exam
- Security review
2016-09-16
Dams and hydraulic Engineering (Hydro-electric power plant)
- Client: Collectivité Eau du Bassin Rennais (CEBR)
- Assignment: Project management for rehabilitation of the power station:
-
- installation of a new turbine
- works to restore free movement of eels (upstream and downstream migration);
- automatization of spillway valves and adaptation of the control-command and monitoring of the structure
- Assistance to the project manager for the regulatory monitoring of the dam
- Operator: Local Public Company (SPL) Eau du Bassin Rennais
- Completion date: 2014 – 2019
- Total cost of the assignment: 210k €
PROJECT DESCRIPTION AND CHARACTERISTICS
The Rophémel dam is built on the coastal river of Rance, upstream of the famous tidal plant located at the estuary. It is a construction built from 1931 to 1938 of multiple vaults in concrete support system ” Considère”, leaning on granite. The dam consists of 16 thin reinforced concrete vaults of 5,40 m of opening between walls and of 10,80 m to 25,60 m of variable height. Its crest length is 126 m, its height above the natural ground is 26 m (class A) and it creates a reservoir of 4.4 million m³.
This development is dual-use: drinking water production and electricity production.
The hydroelectric plant located at the foot of the dam is currently equipped with two Kaplan turbines that will be replaced by a single turbine:
- Equipment flow rate: 13.5 m³ / s
- Max. : 23.8 m
- Installed turbines: Kaplan type with vertical axis
- Electrical power max. : 2.65 MW
- Estimated annual production: 2.47 GWh
ASSIGNMENT
The Rophémel sur la Rance dam was commissioned in 1934 as part of a hydroelectric concession entrusted to EDF. Since 1963, it has been used for two purposes: water production for the Rennes basin and electricity production during peak periods.
The SMPBR entrusted GEOS Ingénieurs Conseils with project management (design studies and follow-up) relating to:
- installation of a new turbine,
- carrying out work to restore the free movement of eels, both for the upstream and downstream migration,
- automatization of the spillway valves and adaptation of the control-command and monitoring of the structure.
The assistance mission to the project manager for the regulatory monitoring of the dam includes:
- Monitoring and analysis of auscultation data
- Preparation of an annual report on auscultation
- Advanced Technical Visits
- Full Technical Exam
- Security review
