Context of the project<\/h2><\/div>EDF operates the hydroelectric power station of Cusset, located in Villeurbanne (Rh\u00f4ne, France). The station was built around 1895. A bypass canal, called Canal de Jonage, 8km long, was built at the same time to supply the water turbines of the dam. But since 1995 EDF noticed the formation of a subsidence on the right embankment where the right bank joins the sluice gate of the dam.<\/p>\n<\/div>
<\/div>Description of the project<\/h2><\/div>In the next year, EDF forecasted a 5km long cut-off wall project for this 10m high embankment. But they decided to carry out a 160m long cutoff wall nearby the station as a matter of emergency.<\/p>\n
The embankment is made of 10m sand and gravel backfill and pebbles, sometimes without matrix, and then natural compact gravels. EDF determined a socket of 2m in this compact soil layer and 5m nearby the station. The depth of the cut-off wall is between 12 and 15m.<\/p>\n<\/div>
Our solution<\/h2><\/div>The technique Geomix\u00ae<\/a> consists in mixing the soil, without excavation, with a\u00a0cement slurry. The cement content of the slurry is adjusted to match a hydraulic conductivity criterion of 10-9m\/s. The Geomix\u00ae process has been chosen to the detriment of injection<\/a> treatment or slurry wall for the following three reasons:<\/p>\n\n- Less spoil, reduction of environment impact (waste, traffic),<\/li>\n
- Quick setup of the wall (no repetitive grouting steps),<\/li>\n
- No fluid under pressure inside the embankment (risk of instability).<\/li>\n<\/ul>\n
When obstacles (concrete, boulder, wood), first recognized or not, have been punctually prevented the Geomix\u00ae cutting head to drill deeper, an additional grout treatment has been implemented below the obstacle.<\/p>\n
The combination of Geomix\u00ae and grouting allow to reduce the impact of encountered obstacles to the bare minimum of resources, duration and costs.<\/p>\n<\/div>
<\/div><\/div><\/div>Type of project:<\/h3><\/div>![](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2023\/03\/Ouvrage-portuaire.png\")
<\/a><\/span>Maritime and river structures<\/h4><\/div><\/div><\/div>Location:<\/h3><\/div>France<\/a><\/p>\n<\/div>Subsidiary of Soletanche Bachy:<\/h3><\/div>Soletanche Bachy France<\/a><\/p>\n<\/div>Project owner:<\/h3><\/div>EDF \u2013 Electricit\u00e9 de France<\/a><\/p>\n<\/div>Prime contractor:<\/h3><\/div>EDF \u2013 Centre d\u2019Ing\u00e9nierie hydraulique – Grenoble<\/p>\n<\/div>
Main contractor:<\/h3><\/div>Soletanche Bachy France<\/p>\n<\/div>
Works period:<\/h3><\/div>01\/2011 \u2013 02\/2011<\/p>\n<\/div>
Types de techniques :<\/h3><\/div>![](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2023\/03\/Geomix.png\")
<\/a><\/span>Soil Mixing<\/h4><\/div><\/div><\/div>![](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2023\/03\/Ecran-etanche.png\")
<\/a><\/span>Cut-off wall<\/h4><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>![](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2023\/09\/CH_25012011_048_Digue-Cusset_C.Helsy-sl.jpg\")
<\/span><\/li>![](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2023\/09\/CH_25012011_014_Digue-Cusset_C.Helsy-sl.jpg\")
<\/span><\/li>![](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2023\/09\/CH_25012011_007_Digue-Cusset_C.Helsy-sl.jpg\")
<\/span><\/li><\/ul><\/div><\/div><\/div><\/div><\/div><\/div><\/div>Key figures of the project<\/p><\/h2><\/div>
<\/div><\/div><\/div>0<\/span>m\u00b2<\/span><\/div>of Geomix\u00ae cut-off wall <\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>0<\/span><\/div>bores 18 m deep for soil investigation drilling<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>0<\/span><\/div>water standpipes and groundwater table monitoring installed<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>Relative techniques<\/h2><\/div><\/div><\/div><\/i>See all the techniques<\/span><\/a><\/div><\/div><\/div>- <\/span><\/a><\/span>
Geomix\u00ae<\/a><\/h3><\/div><\/div><\/div><\/div><\/div> Cost-effective and more eco-friendly structures The Geomix\u00ae process uses the soil mixing technique across a [...]<\/p><\/div>
<\/i>En savoir plus<\/span><\/a><\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t![\"\"](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2022\/05\/CH_25012011_040.jpg\")
\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\n- <\/span><\/a><\/span>
Deep Soil Mixing<\/a><\/h3><\/div><\/div><\/div><\/div><\/div> A multi-application technique Soletanche Bachy offers you its full range of Deep Soil Mixing processes [...]<\/p><\/div>
<\/i>En savoir plus<\/span><\/a><\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t![\"Fondations](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2022\/05\/CH_20191120_071.jpg\")
\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\n- <\/span><\/a><\/span>
Cut-off walls<\/a><\/h3><\/div><\/div><\/div><\/div><\/div> We are experts in groundwater management.\u00a0 Soletanche Bachy\u2019s cut-off walls techniques mean we [...]<\/p><\/div>
EDF operates the hydroelectric power station of Cusset, located in Villeurbanne (Rh\u00f4ne, France). The station was built around 1895. A bypass canal, called Canal de Jonage, 8km long, was built at the same time to supply the water turbines of the dam. But since 1995 EDF noticed the formation of a subsidence on the right embankment where the right bank joins the sluice gate of the dam.<\/p>\n<\/div>
Description of the project<\/h2><\/div>In the next year, EDF forecasted a 5km long cut-off wall project for this 10m high embankment. But they decided to carry out a 160m long cutoff wall nearby the station as a matter of emergency.<\/p>\n
The embankment is made of 10m sand and gravel backfill and pebbles, sometimes without matrix, and then natural compact gravels. EDF determined a socket of 2m in this compact soil layer and 5m nearby the station. The depth of the cut-off wall is between 12 and 15m.<\/p>\n<\/div>
Our solution<\/h2><\/div>The technique Geomix\u00ae<\/a> consists in mixing the soil, without excavation, with a\u00a0cement slurry. The cement content of the slurry is adjusted to match a hydraulic conductivity criterion of 10-9m\/s. The Geomix\u00ae process has been chosen to the detriment of injection<\/a> treatment or slurry wall for the following three reasons:<\/p>\n\n- Less spoil, reduction of environment impact (waste, traffic),<\/li>\n
- Quick setup of the wall (no repetitive grouting steps),<\/li>\n
- No fluid under pressure inside the embankment (risk of instability).<\/li>\n<\/ul>\n
When obstacles (concrete, boulder, wood), first recognized or not, have been punctually prevented the Geomix\u00ae cutting head to drill deeper, an additional grout treatment has been implemented below the obstacle.<\/p>\n
The combination of Geomix\u00ae and grouting allow to reduce the impact of encountered obstacles to the bare minimum of resources, duration and costs.<\/p>\n<\/div>
<\/div><\/div><\/div>Type of project:<\/h3><\/div><\/a><\/span>Maritime and river structures<\/h4><\/div><\/div><\/div>Location:<\/h3><\/div>France<\/a><\/p>\n<\/div>Subsidiary of Soletanche Bachy:<\/h3><\/div>Soletanche Bachy France<\/a><\/p>\n<\/div>Project owner:<\/h3><\/div>EDF \u2013 Electricit\u00e9 de France<\/a><\/p>\n<\/div>Prime contractor:<\/h3><\/div>EDF \u2013 Centre d\u2019Ing\u00e9nierie hydraulique – Grenoble<\/p>\n<\/div>
Main contractor:<\/h3><\/div>Soletanche Bachy France<\/p>\n<\/div>
Works period:<\/h3><\/div>01\/2011 \u2013 02\/2011<\/p>\n<\/div>
Types de techniques :<\/h3><\/div><\/a><\/span>Soil Mixing<\/h4><\/div><\/div><\/div><\/a><\/span>Cut-off wall<\/h4><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>- <\/span><\/li>
- <\/span><\/li>
- <\/span><\/li><\/ul><\/div><\/div><\/div><\/div><\/div><\/div><\/div>
Key figures of the project<\/p><\/h2><\/div>
<\/div><\/div><\/div>0<\/span>m\u00b2<\/span><\/div>of Geomix\u00ae cut-off wall <\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>0<\/span><\/div>bores 18 m deep for soil investigation drilling<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>0<\/span><\/div>water standpipes and groundwater table monitoring installed<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>Relative techniques<\/h2><\/div><\/div><\/div><\/i>See all the techniques<\/span><\/a><\/div><\/div><\/div>- <\/span><\/a><\/span>
Geomix\u00ae<\/a><\/h3><\/div><\/div><\/div><\/div><\/div> Cost-effective and more eco-friendly structures The Geomix\u00ae process uses the soil mixing technique across a [...]<\/p><\/div>
<\/i>En savoir plus<\/span><\/a><\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\n- <\/span><\/a><\/span>
Deep Soil Mixing<\/a><\/h3><\/div><\/div><\/div><\/div><\/div> A multi-application technique Soletanche Bachy offers you its full range of Deep Soil Mixing processes [...]<\/p><\/div>
<\/i>En savoir plus<\/span><\/a><\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\n- <\/span><\/a><\/span>
Cut-off walls<\/a><\/h3><\/div><\/div><\/div><\/div><\/div> We are experts in groundwater management.\u00a0 Soletanche Bachy\u2019s cut-off walls techniques mean we [...]<\/p><\/div>
In the next year, EDF forecasted a 5km long cut-off wall project for this 10m high embankment. But they decided to carry out a 160m long cutoff wall nearby the station as a matter of emergency.<\/p>\n
The embankment is made of 10m sand and gravel backfill and pebbles, sometimes without matrix, and then natural compact gravels. EDF determined a socket of 2m in this compact soil layer and 5m nearby the station. The depth of the cut-off wall is between 12 and 15m.<\/p>\n<\/div>
Our solution<\/h2><\/div>The technique Geomix\u00ae<\/a> consists in mixing the soil, without excavation, with a\u00a0cement slurry. The cement content of the slurry is adjusted to match a hydraulic conductivity criterion of 10-9m\/s. The Geomix\u00ae process has been chosen to the detriment of injection<\/a> treatment or slurry wall for the following three reasons:<\/p>\n\n- Less spoil, reduction of environment impact (waste, traffic),<\/li>\n
- Quick setup of the wall (no repetitive grouting steps),<\/li>\n
- No fluid under pressure inside the embankment (risk of instability).<\/li>\n<\/ul>\n
When obstacles (concrete, boulder, wood), first recognized or not, have been punctually prevented the Geomix\u00ae cutting head to drill deeper, an additional grout treatment has been implemented below the obstacle.<\/p>\n
The combination of Geomix\u00ae and grouting allow to reduce the impact of encountered obstacles to the bare minimum of resources, duration and costs.<\/p>\n<\/div>
<\/div><\/div><\/div>Type of project:<\/h3><\/div><\/a><\/span>Maritime and river structures<\/h4><\/div><\/div><\/div>Location:<\/h3><\/div>France<\/a><\/p>\n<\/div>Subsidiary of Soletanche Bachy:<\/h3><\/div>Soletanche Bachy France<\/a><\/p>\n<\/div>Project owner:<\/h3><\/div>EDF \u2013 Electricit\u00e9 de France<\/a><\/p>\n<\/div>Prime contractor:<\/h3><\/div>EDF \u2013 Centre d\u2019Ing\u00e9nierie hydraulique – Grenoble<\/p>\n<\/div>
Main contractor:<\/h3><\/div>Soletanche Bachy France<\/p>\n<\/div>
Works period:<\/h3><\/div>01\/2011 \u2013 02\/2011<\/p>\n<\/div>
Types de techniques :<\/h3><\/div><\/a><\/span>Soil Mixing<\/h4><\/div><\/div><\/div><\/a><\/span>Cut-off wall<\/h4><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>- <\/span><\/li>
- <\/span><\/li>
- <\/span><\/li><\/ul><\/div><\/div><\/div><\/div><\/div><\/div><\/div>
Key figures of the project<\/p><\/h2><\/div>
<\/div><\/div><\/div>0<\/span>m\u00b2<\/span><\/div>of Geomix\u00ae cut-off wall <\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>0<\/span><\/div>bores 18 m deep for soil investigation drilling<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>0<\/span><\/div>water standpipes and groundwater table monitoring installed<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>Relative techniques<\/h2><\/div><\/div><\/div><\/i>See all the techniques<\/span><\/a><\/div><\/div><\/div>- <\/span><\/a><\/span>
Geomix\u00ae<\/a><\/h3><\/div><\/div><\/div><\/div><\/div> Cost-effective and more eco-friendly structures The Geomix\u00ae process uses the soil mixing technique across a [...]<\/p><\/div>
<\/i>En savoir plus<\/span><\/a><\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\n- <\/span><\/a><\/span>
Deep Soil Mixing<\/a><\/h3><\/div><\/div><\/div><\/div><\/div> A multi-application technique Soletanche Bachy offers you its full range of Deep Soil Mixing processes [...]<\/p><\/div>
<\/i>En savoir plus<\/span><\/a><\/div>\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\n- <\/span><\/a><\/span>
Cut-off walls<\/a><\/h3><\/div><\/div><\/div><\/div><\/div> We are experts in groundwater management.\u00a0 Soletanche Bachy\u2019s cut-off walls techniques mean we [...]<\/p><\/div>
The technique Geomix\u00ae<\/a> consists in mixing the soil, without excavation, with a\u00a0cement slurry. The cement content of the slurry is adjusted to match a hydraulic conductivity criterion of 10-9m\/s. The Geomix\u00ae process has been chosen to the detriment of injection<\/a> treatment or slurry wall for the following three reasons:<\/p>\n When obstacles (concrete, boulder, wood), first recognized or not, have been punctually prevented the Geomix\u00ae cutting head to drill deeper, an additional grout treatment has been implemented below the obstacle.<\/p>\n The combination of Geomix\u00ae and grouting allow to reduce the impact of encountered obstacles to the bare minimum of resources, duration and costs.<\/p>\n<\/div> France<\/a><\/p>\n<\/div> Soletanche Bachy France<\/a><\/p>\n<\/div> EDF \u2013 Electricit\u00e9 de France<\/a><\/p>\n<\/div> EDF \u2013 Centre d\u2019Ing\u00e9nierie hydraulique – Grenoble<\/p>\n<\/div> Soletanche Bachy France<\/p>\n<\/div> 01\/2011 \u2013 02\/2011<\/p>\n<\/div> Key figures of the project<\/p><\/h2><\/div> Cost-effective and more eco-friendly structures The Geomix\u00ae process uses the soil mixing technique across a [...]<\/p><\/div> A multi-application technique Soletanche Bachy offers you its full range of Deep Soil Mixing processes [...]<\/p><\/div> We are experts in groundwater management.\u00a0 Soletanche Bachy\u2019s cut-off walls techniques mean we [...]<\/p><\/div>\n
Type of project:<\/h3><\/div>
<\/a><\/span>Maritime and river structures<\/h4><\/div><\/div><\/div>
Location:<\/h3><\/div>
Subsidiary of Soletanche Bachy:<\/h3><\/div>
Project owner:<\/h3><\/div>
Prime contractor:<\/h3><\/div>
Main contractor:<\/h3><\/div>
Works period:<\/h3><\/div>
Types de techniques :<\/h3><\/div>
<\/a><\/span>Soil Mixing<\/h4><\/div><\/div><\/div>
<\/a><\/span>Cut-off wall<\/h4><\/div><\/div><\/div>
<\/span><\/li><\/span><\/li><\/span><\/li><\/ul><\/div>Relative techniques<\/h2><\/div><\/div><\/div>
Geomix\u00ae<\/a><\/h3><\/div>
\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\nDeep Soil Mixing<\/a><\/h3><\/div>
\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\nCut-off walls<\/a><\/h3><\/div>
![\"\"](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2022\/05\/CH_20210309_010-vignette.jpg\")
\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/li>\n<\/ul>![](\"https:\/\/www.soletanche-bachy.com\/wp-content\/uploads\/sites\/18\/2023\/09\/CH_25012011_014_Digue-Cusset_C.Helsy-vignette.jpg\")
<\/a><\/span><\/div><\/div><\/li>\n