Geosynthetics June/July 2022 - 25

Monitoring and results
On a new high-speed line constructed
between 2010 and 2016 in France (LGV
Est), engineers monitored two drainage
methods for the cut sections: a drainage
layer made with granular material and
one made with a multi-linear drainage
geocomposite. The engineers monitored
two areas of 5,650 square feet (525 m2)
each with temperature sensors, water
content gauges at the interface and flowmeters
(Heili et al. 2014).
It is observed that the water content
remained stable between 20% and 40% at
the gravel/soil interface and between 20%
and 27% at the geocomposite/soil interface.
These results show that both drainage
systems perform well: They keep the soil
unsaturated even during rain events.
DITCH
SUB-BALLAST, 300MM MIN. TYP
FIGURE 7 Typical cross section
COLLECTOR DRAIN
FIGURE 8 Installation of the geocomposite and backfilling with ballast
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Geosynthetics June/July 2022

Table of Contents for the Digital Edition of Geosynthetics June/July 2022

Geosynthetics June/July 2022 - Cover1
Geosynthetics June/July 2022 - Cover2
Geosynthetics June/July 2022 - 1
Geosynthetics June/July 2022 - 2
Geosynthetics June/July 2022 - 3
Geosynthetics June/July 2022 - 4
Geosynthetics June/July 2022 - 5
Geosynthetics June/July 2022 - 6
Geosynthetics June/July 2022 - 7
Geosynthetics June/July 2022 - 8
Geosynthetics June/July 2022 - 9
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Geosynthetics June/July 2022 - 11
Geosynthetics June/July 2022 - 12
Geosynthetics June/July 2022 - 13
Geosynthetics June/July 2022 - 14
Geosynthetics June/July 2022 - 15
Geosynthetics June/July 2022 - 16
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Geosynthetics June/July 2022 - 18
Geosynthetics June/July 2022 - 19
Geosynthetics June/July 2022 - 20
Geosynthetics June/July 2022 - 21
Geosynthetics June/July 2022 - 22
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Geosynthetics June/July 2022 - 24
Geosynthetics June/July 2022 - 25
Geosynthetics June/July 2022 - 26
Geosynthetics June/July 2022 - 27
Geosynthetics June/July 2022 - 28
Geosynthetics June/July 2022 - 29
Geosynthetics June/July 2022 - 30
Geosynthetics June/July 2022 - 31
Geosynthetics June/July 2022 - 32
Geosynthetics June/July 2022 - 33
Geosynthetics June/July 2022 - 34
Geosynthetics June/July 2022 - 35
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Geosynthetics June/July 2022 - 37
Geosynthetics June/July 2022 - 38
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Geosynthetics June/July 2022 - 40
Geosynthetics June/July 2022 - 41
Geosynthetics June/July 2022 - 42
Geosynthetics June/July 2022 - 43
Geosynthetics June/July 2022 - 44
Geosynthetics June/July 2022 - Cover3
Geosynthetics June/July 2022 - Cover4
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