Centreline)¶

Sand Dams & Civil Works • Est. CapEx: Low-cost / Locally fabricated

Technical Overview¶

Engineered earthen structures for storing mine tailings (waste slurry) using upstream, downstream, or centreline construction methods. These are critical for mining operations to impound tailings safely, with modern designs incorporating soil mechanics and seismic stability.

Key Specifications & Engineering Parameters¶

Parameter	Specification
Category	Sand Dams & Civil Works
Capital Cost	Low-cost / Locally fabricated
Primary Mechanism	Starter dam built first, then raised progressively using tailings or borrow materials. Upstream dams rely on tailings for support (cheaper but less stable), downstream dams require more material but offer higher stability, and centreline dams maintain a fixed centerline for balanced performance. Internal drains and impervious cores control seepage and prevent liquefaction.
Target Scale	Household / Village Cluster
Standard Lifespan	10 - 20 Years

Engineering Trade-Offs¶

✅ Advantages⚠️ Limitations

P
r
o
v
e
n
t
e
c
h
n
o
l
o
g
y
f
o
r
l
a
r
g
e
-
s
c
a
l
e
m
i
n
i
n
g
;
c
e
n
t
r
e
l
i
n
e
a
n
d
d
o
w
n
s
t
r
e
a
m
d
e
s
i
g
n
s
o
f
f
e
r
h
i
g
h
s
e
i
s
m
i
c
s
t
a
b
i
l
i
t
y
.
E
x
t
e
n
s
i
v
e
d
e
s
i
g
n
s
t
a
n
d
a
r
d
s
a
v
a
i
l
a
b
l
e
(
e
.
g
.
,
U
S
B
R
D
e
s
i
g
n
S
t
a
n
d
a
r
d
s
)
.

H
i
g
h
c
a
p
i
t
a
l
a
n
d
o
p
e
r
a
t
i
o
n
a
l
c
o
s
t
s
;
c
a
t
a
s
t
r
o
p
h
i
c
f
a
i
l
u
r
e
r
i
s
k
i
f
n
o
t
p
r
o
p
e
r
l
y
d
e
s
i
g
n
e
d
a
n
d
m
o
n
i
t
o
r
e
d
(
e
.
g
.
,
s
t
a
t
i
c
l
i
q
u
e
f
a
c
t
i
o
n
)
.
N
o
t
s
u
i
t
a
b
l
e
f
o
r
s
m
a
l
l
-
s
c
a
l
e
o
r
l
o
w
-
b
u
d
g
e
t
a
p
p
l
i
c
a
t
i
o
n
s
.

Cross-Reference & Interactive Tools¶

Need to evaluate this technology for your specific field site? Run the WhatWater.info Selector Engine to compare it against 100+ alternative solutions.