How to Stabilize A High Broken Slope with Self-drilling Rock Bolts?

by Simone S. sinorockco

The 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, and we will reply to you one by one asap.

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About Simone S. Advanced   sinorockco

8 connections, 0 recommendations, 106 honor points.
Joined APSense since, November 28th, 2019, From LuoYang, China.

Created on May 24th 2022 03:08. Viewed 151 times.


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