Geoscience Reference
In-Depth Information
Perforated slab with
1mm opening
0
1m
x
1
m
1 Slope towards
either sides of road
from the center
0.5 m Coarse Sand Layer
0.5 m Gravel Layer
Percolation Pit
with perforated
slabs
Depth = 3m
2 m Pebble Bed
Trees
Service Lane
500 m.
Green belt
Main road
Green belt
Service Lane
Fig. 1.
Rain water harvesting design along the roads through percolation pits.
Perforated Slab W ith 1.5 m m
Perforation
Iron Net FILTER w ith 1.5 m m
O p e n in g fix e d in W a ll
IN JECTIO N W ELL
Ground Level
CONNECTED W ITH ROAD
SIDE DRAINS HAVING IRON
NET FILTERS.
0.5 M
COARSE SAND
0.
5
M
M.S PLAIN PIPE
0
.
5 M
GRAVEL
Storage Tank ( 3.5 m x 1m x 1m )
BOULDERS
M.S SLOTTED PIPE
(W ITH 1.5 MM SLOT SIZE)
2.0 M
F iltra tio n T a n k
( 3.5 m x 2m x 1m )
S ilt / D u s t d e p o s it a lo n g w ith ra in fa ll w a te r.
To be cleaned every w eek during rainy season
ALLUVIUM
1 m
M S plain Pipe
Im perm eable layer of clay etc.
Water Level
1 0 m e te rs p e rm e a b le z o n e b e lo w w a te r le v e l
ONE FEET HIGH COVERED DRAIN HAVING
IRON NET W ITH 1.5 M M OPENING AT EVERY
50M DISTANCE CONNECTING RAIN HARVESTING
STRUCTURES.
TREES
Service Lane
Green belt
500 m .
Main road
DIVIDER
Green belt
Service Lane
4
Fig. 2.
Rain water harvesting through injection well technique.
will have injection well via storage tanks and filtration tanks reaching
at least 10-15 m below water level. The design is self-explanatory as
per Fig. 2. Here, water is diverted to groundwater reservoir through
recharge shaft via filtration media crossing the impermeable zone.
5. Advantages
(1) These systems of rainwater harvesting can be applied, in any country
at massive scale, at all national highways and other roads.
4
,
5
