How to Stabilize A High Broken Slope with Self-drilling Rock Bolts?
by Simone S. sinorockcoThe stability of the high slope is mainly determined
by the geological conditions of the slope formed in the natural environment, as
well as the acquired artificial transformation and other factors. The fractured
section of the rock mass on the high slope has the characteristics of broken
rock formation, high-risk factors, and difficulty in supporting. When choosing
the supporting method, it is necessary to choose a supporting method with a strong penetrating force and a good anchoring effect. I suggest self-drilling
rock bolts to support the broken section of the high slope rock mass.
Characteristics of High Slope Rock Mass Crushing Section
It is very common for the slump in the upper part of
the broken section of the rock mass on the high slope to cause hole collapse or
stuck drill. Since the drill bit will be stuck in the narrow part, it is
necessary to check whether the drill hole is displaced frequently during
support and timely adjustment. High-slope rock fragmentation will cause
high-abrasive support difficulties. Ordinary drill pipes are also prone to
drilling difficulties when they pass through these formations. Self-drilling rock
bolts are equipped with various types of drill bits, which are highly matched
with the properties of rock formations and soil so that we can improve drilling
efficiency in different geological conditions.
Supporting Method for Broken Section of Rock Mass on High Slope
Self-drilling anchor bolts can complete drilling, bolt
installation, grouting, anchoring, and other processes in one construction
process. Compared with conventional drill pipes, self-drilling hollow bolts are
equipped with a variety of drill bits, including " There are various types
of cross all-steel drill bits, "mud drill bits", "ball-tooth
alloy drill bits", etc., which can be selected according to the properties
of different rock layers and soil during construction.
The self-drilling hollow bolt is used in combination
with the excavation and modification drilling rig. The construction work area
is large and the construction height is high, which can minimize the personal
safety risk of the construction personnel. The rod body is made of
high-strength alloy seamless threaded steel pipe, which can be cut or
lengthened arbitrarily. It has the advantages of simple construction
technology, high construction efficiency, and good economic benefits. The
problems of shrinking collapsed holes, and difficulty in forming holes have
played a good anchoring effect.
Advantages of Self-drilling Rock Bolt Support
High stability
The grouting of self-drilling rock anchors is from the
inside to the outside through the inner hole of the rod. At the same time, the
outer end of the anchor hole is provided with a grouting plug and a backing
plate, which can effectively prevent the grouting from overflowing. If
necessary, pressure grouting can also be carried out, so that the slurry can be
pushed into the cracks of the rock and soil around the rod body, and the
stability of the rock formation can be improved.
Strong Ability to Cope with the Environment
The self-drilling hollow bar combines the drill pipe
and the hollow bolt body into one and can be used in the stratum that is weak
and broken and difficult to form holes. An ordinary bolt is of poor adaptability,
which generally needs a drilling hole in advance and then is put in the hole.
However, the hole will often collapse when the drill pipe is pulled out in the
broken and weak rock. Therefore, in the face of weak and broken rock mass
construction, the self-drilling bolt has a stronger ability to cope with the
environment.
The construction process is simple
The self-drilling bolt integrates drilling, bolt
installation, and grouting. All construction procedures are completed in one
process, reducing the process of pulling out the drill pipe, installing the
bolt, and inserting the grouting pipe, and the process is simple. High
construction efficiency.
The above is the answer to the question of how to
support the broken section of the high-slope rock mass. Self-drilling bolts are
a new type of supporting material, which can improve construction efficiency
and reduce comprehensive construction costs. If you have any questions about
the rock bolt, you are welcome to leave a message to us or email us directly at
sinorock@sinorockco.com, and we will reply to you one by one asap.
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Created on May 24th 2022 03:08. Viewed 149 times.