Geosynthetics April/May 2023 - 21

The opening to the tunnel part underneath
the motorway was made by partly
burning away the final sheet pile wall.
Afterward, the contractor started compacting
and installing the road construction
(Figure 12).
This project shows that a geosynthetic
barrier system is effective. Also, the geosynthetic
barrier to the groundwater allowed
the soil along the sides of the ramps to
be seeded with grass for a natural look.
Lessons learned
The immersion of geosynthetics is possible
and has already proven itself in
several projects where dimensions of
1,300,000 feet² (120,773 m2) as one sheet
were submerged. However, this technique
is not known to many contractors,
so coordination between different
construction activities is of great importance
and must be worked out before
construction starts.
Conclusion
Welding the individual rolls of geomembrane
at the confined site was impossible
because of the level of water tightness
required, time available, site access and
logistical constraints. The use of prefabricated
geomembrane panels also required
only one seam or weld to be performed
on-site, reducing construction time, cost
and equipment. In addition, the prefabricated
panels were created in the exact
shape of the ramps, which resulted in no
waste generation on-site. G
>> For more, search groundwater
at GeosyntheticsMagazine.com.
FIGURE 11 Pit after backfilling and dewatering
FIGURE 12 Tunnel N348 after completion
GeosyntheticsMagazine.com
21

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Geosynthetics April/May 2023

Table of Contents for the Digital Edition of Geosynthetics April/May 2023

Geosynthetics April/May 2023 - Cover1
Geosynthetics April/May 2023 - Cover2
Geosynthetics April/May 2023 - 1
Geosynthetics April/May 2023 - 2
Geosynthetics April/May 2023 - 3
Geosynthetics April/May 2023 - 4
Geosynthetics April/May 2023 - 5
Geosynthetics April/May 2023 - 6
Geosynthetics April/May 2023 - 7
Geosynthetics April/May 2023 - 8
Geosynthetics April/May 2023 - 9
Geosynthetics April/May 2023 - 10
Geosynthetics April/May 2023 - 11
Geosynthetics April/May 2023 - 12
Geosynthetics April/May 2023 - 13
Geosynthetics April/May 2023 - 14
Geosynthetics April/May 2023 - 15
Geosynthetics April/May 2023 - 16
Geosynthetics April/May 2023 - 17
Geosynthetics April/May 2023 - 18
Geosynthetics April/May 2023 - 19
Geosynthetics April/May 2023 - 20
Geosynthetics April/May 2023 - 21
Geosynthetics April/May 2023 - 22
Geosynthetics April/May 2023 - 23
Geosynthetics April/May 2023 - 24
Geosynthetics April/May 2023 - 25
Geosynthetics April/May 2023 - 26
Geosynthetics April/May 2023 - 27
Geosynthetics April/May 2023 - 28
Geosynthetics April/May 2023 - 29
Geosynthetics April/May 2023 - 30
Geosynthetics April/May 2023 - 31
Geosynthetics April/May 2023 - 32
Geosynthetics April/May 2023 - 33
Geosynthetics April/May 2023 - 34
Geosynthetics April/May 2023 - 35
Geosynthetics April/May 2023 - 36
Geosynthetics April/May 2023 - 37
Geosynthetics April/May 2023 - 38
Geosynthetics April/May 2023 - 39
Geosynthetics April/May 2023 - 40
Geosynthetics April/May 2023 - 41
Geosynthetics April/May 2023 - 42
Geosynthetics April/May 2023 - 43
Geosynthetics April/May 2023 - 44
Geosynthetics April/May 2023 - Cover3
Geosynthetics April/May 2023 - Cover4
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-october-november-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-july-august-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-case-studies-guide-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-april-may-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-february-march-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-december-2023-january-2024
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-october-november-2023
https://www.nxtbook.com/ata/geosynthetics/geoysynthetics-august-september-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-june-july-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-april-may-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-february-march-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-december-2022-january-2023
https://www.nxtbook.com/ata/geosynthetics/geosynthetics-october-november-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-august-september-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-june-july-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-april-may-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-february-march-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-december-2021-january-2022
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-october-november-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-august-september-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-june-july-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-april-may-2021
https://www.nxtbook.com/ifai/geosynthetics/geosynthetics-february-march-2021
https://www.nxtbook.com/ifai/geosynthetics/1220GS
https://www.nxtbook.com/ifai/geosynthetics/1020GS
https://www.nxtbook.com/ifai/geosynthetics/0820GS
https://www.nxtbook.com/ifai/geosynthetics/0620GS
https://www.nxtbook.com/ifai/geosynthetics/0420GS
https://www.nxtbook.com/ifai/geosynthetics/0220GS
https://www.nxtbook.com/ifai/geosynthetics/1219GS
https://www.nxtbook.com/ifai/geosynthetics/1019GS
https://www.nxtbook.com/ifai/geosynthetics/0819GS
https://www.nxtbook.com/ifai/geosynthetics/0619GS
https://www.nxtbook.com/ifai/geosynthetics/0419GS
https://www.nxtbook.com/ifai/geosynthetics/0219GS
https://www.nxtbook.com/ifai/geosynthetics/1218GS
https://www.nxtbook.com/ifai/geosynthetics/1018GS
https://www.nxtbook.com/ifai/geosynthetics/0818GS
https://www.nxtbook.com/ifai/geosynthetics/0618GS
https://www.nxtbook.com/ifai/geosynthetics/0418GS
https://www.nxtbook.com/ifai/geosynthetics/0218GS
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