Slope support technology plays a vital role in construction engineering. Reasonable application of slope support methods can improve the efficiency and quality of foundation construction and the support effect of the slope, ensuring the stability and safety of the slope, and avoiding the occurrence of rockfall or collapse accidents on the slope. At present, there are many kinds of slope support methods, including soil nailing wall support, anchor bolts support, gravity retaining wall, etc. These methods are dependent on actual application conditions, and the advantages of these are also different. Choosing the appropriate slope support method can safely and efficiently ensure the overall quality of the construction process.
This article will introduce the common slope support methods, as well as the application and advantages of the current self-drilling anchor system in slope reinforcement.
Types of Slope Support Technology
Soil Nailing Wall Support Technology
The soil nailing is to set soil nails in the broken and weak rock slope, and use soil nails to increase the stability of the slope. The depth and size of the drilling holes need to be reasonably set according to the soil nailing situation, so as to ensure the full play of the supporting role of the wall.
In recent years, self-drilling hollow bolts have been widely used in soil nailing support due to their simple construction process and good anchoring effect. In traditional soil nailing, solid steel bars are installed in pre-drilled holes and then grouted for anchorage. The self-drilling hollow bolt used as soil nailing support is an efficient and economical support method, which can improve the natural stability of the soil.
Rock Bolting
Ordinary bolt support:
Generally, concrete is used in combination with ordinary bolts. First, drill holes, then insert the bolts, and then pour the cement slurry into the holes through high pressure. So the construction efficiency of this technique is relatively low for its complex process and steps.
Self-drilling hollow bolt:
Self-drilling hollow bolt integrates drilling, grouting, and anchoring, and grouting is performed simultaneously during drilling to achieve the anchoring effect. It is suitable for broken and difficult-to-form surrounding rock. Casing protection is not required in the construction process, which can shorten the construction period and improve efficiency. The overall process is simple, fast, and easy to operate, now is widely used in slope support to improve slope stability and durability.
Self-drilling bolts can be used for various slope support conditions, such as foundation engineering, retaining wall support, highway slope support, etc. In addition to slope engineering, self-drilling bolts are also suitable for ground and foundation engineering, tunnel and underground engineering, and can be used for temporary and permanent support in the early stage of the project, which can effectively enhance the stability of soil and rock mass.
Gravity retaining wall
The material of the retaining wall is usually composed of strip stones, flake stones, concrete, etc., and the shape is a simple trapezoid. Gravity retaining wall is simple in style and easy to obtain materials, but its own weight is relatively large, and the bearing capacity of the foundation is relatively high. If the foundation is relatively soft and weak, the use of gravity retaining wall support technology will be limited by the bearing capacity of the foundation, and a good supporting effect cannot be achieved.
Reinforced Retaining Wall
Reinforced earth retaining wall is a composite structure that can exert the performance of materials. The structure of the overall retaining wall is light in weight and occupies a small area. However, in the case of steep slopes, an excessively inclined angle will have a serious impact on the actual stretching, and cannot achieve a good support effect
Sprayed Shotcrete Technique
The sprayed shotcrete support technology is suitable for the slope that with good stability but needs to be strengthened. This method needs to clean up the weeds, debris, and loose rocks on the slope first to ensure overall cleanliness, and then the concrete spraying operation can be carried out. The construction period of sprayed shotcrete is short, and it has good economic benefits.
Summary
To sum up, a variety of slope support technologies will be used in the construction process, which should be selected reasonably according to the different conditions of the construction site, so as to maximize the use value of the slope technology. Blind construction without studying the environmental factors and applicable conditions will not only fail to achieve a good support effect but also seriously threaten the life safety of the workers.
Sinorock has 19 years of experience in anchoring services, and the self-drilling anchoring system developed by Sinorock has been widely used in many slope engineering projects. Sinorock has a professional technical team, which can provide customers with application technical consultation and system solutions according to different geological conditions, application environments, application structures, etc., to help customers improve construction efficiency and reduce comprehensive construction costs.