Soil Nail Introduction
Soil Nail is a supporting measure, which is
usually to be applied to treat unstable conditions, such as man-made slopes,
unstable tunnels, and foundations. As a mature technology, Soil Nail is widely
used.
Soil Nail Types
Drilled
and grouted Soil Nail, Driven Soil Nail, and Jet Grouted Soil Nail
The main construction process of these
types of soil nails contains 3 steps.
First, we must use a drilling machine to drill
in the soil to be supported so that we can get a hole with the required diameter
and depth. When encountering unstable conditions, we have to drill with a
casing followed to avoid the hole collapsing. Thus, the construction efficiency
will decrease much.
Then, we put a rebar or anchor bolt in the
hole as the main structure of the soil nail.
Finally, we fill the hole with concrete or
other grouting materials. After that, a plate and a nut will be installed on
the naked part of the rebar or anchor bolt to give a pre-stress. If the wall
has a deformation, the soil nail will prevent it from getting worse.
To protect the soil nail from corroding, in
some cases, the rebar or anchor bolt will be coated by epoxy or hot-dip
galvanized, such as seaport, acid, and alkali mist, as well as occasions with
high requirements for service life and complex environments in the field of
geotechnical engineering.
Self Drilling Soil Nail
Introduction
What
is Self Drilling Soil Nail?
Self Drilling Soil Nail is one of the soil
nails, which uses self drilling anchor bolt as the nail. Its construction is
much more simple. The construction process of Self Drilling Anchor Bolt mainly contains
one step: Drilling and Grouting.
The self drilling anchor bolt has six components,
a hollow bar, a drill bit, a coupler, a plate, a nut, and a centralizer. It can
combine drilling, grouting, and anchoring in one process. Self drilling anchor
bolt system is safe, efficient, and convenient. It is suitable for broken rock,
loose soil, and geological conditions where is difficult to drill holes. It
helps to ensure the anchoring effect in complex ground conditions and achieve the best construction result.
What
advantages does Self Drilling Soil Nail have?
1. Simplify the construction process: Self
Drilling Soil Nail combines drilling and grouting together, no matter what soil
conditions.
2. More cost-effective: More efficiency and
cost less. Using Self Drilling Soil nails can lower the cost.
3. Faster to install: Because there is a continuous wave on the surface of self drilling soil nail, it can be installed
very fast and easily.
4. More convenient to support unstable
conditions.
Related Cases