Self drilling anchor bolts--An ideal solution for weak soil
Time:2021-08-25From:sinorock View:
In the field of geotechnical engineering, there are complex geological conditions such as weak rock and soil layers, fault fracture zones, and easily collapse geology, which brings great difficulties to engineering construction. Self-drilling anchor bolt integrates the functions of drilling, grouting, and anchoring together. The construction process of simultaneously drilling and grouting is the best solution for loose and weak formations. Self-drilling anchor bolt is mainly composed of hollow anchor bar, nut, plate, coupler, centralizer, and drill bit. The hollow anchor bar has continuous thread along the full length, thus it can be cut at any position; the thread profile of the hollow bar conforms to international standards, and can be connected with different drilling rigs and accessories. The drill bit is a very important part of the system. The quality of drill bits determines drilling efficiency. After years of research, Sinorock R&D team has continuously optimized the design structure according to actual project data, so that the drilling quality can be ensured during the service life. When choosing a drill bit, the customer can choose the most suitable drill bit according to geological conditions, so as to maximally save costs under the premise of ensuring construction quality.Self-drilling anchor bolts are the best solution for weak formations. They are widely used in slope engineering, ground and foundation engineering, tunnel and underground engineering. They can be used for pre-construction support and can effectively enhance the stability of soil and rock mass. For the support of weak ground, the self-drilling anchor bolt construction technology has the main advantages as follows.
Hollow anchor bar can work as both drill rod and anchor rod, which reduces the two construction steps of retracting drill rod and inserting anchor rod. It simplifies the construction process and effectively improves construction efficiency.
Self-drilling anchor bolt can be drilled without casing when drilling in soft formations, thus it can greatly improve construction efficiency, shorten the construction period and reduce engineering costs.
Hollow anchor bar has continuous thread along the full length, which can be cut at the construction site according to the actual situation and can be extended with a coupler, which is especially suitable for limited access.
Simultaneously drilling and grouting, the cement grout can be fully filled and penetrated into the surrounding rock and soil to form a uniform filter cake with higher bonding strength.
Rotary percussion drilling method not only drills efficiently but also ensures good directional stability of the drill rod. As an effective construction technology, self-drilling anchor bolts have been widely used in various engineering projects, especially in special geology such as soft soil layers and easily collapse conditions. It is the best solution for weak soil.
latest news
-
- How to Use Self Drilling Rock Bolts in Tunnel and Mining Constructions?
- Time:2024-02-28From:This Site
- In the construction of excavation, such as tunnels, mining, and other underground projects, we have to support the soil and rock mass to ensure the people and equipment are safe. Generally, we use rock bolts to do this. Rock bolt has a long history of being used in tunnels and mines and now it is the turn of self-drilling rock bolts.
- View details
-
- 4 Advantages of Self-drilling Hollow Grouting Anchors compare with common Grouted Bolts
- Time:2024-02-23From:This Site
- Sinorock Self-drilling Hollow Grouting Anchors have the characteristics of fast construction speed, large anchoring force, good anti-corrosion performance, simple operation, and timely provision of anchoring force.
- View details
-
- Design and Introduction of Self Drilling Anchor Bolt in Geotechnical Engineering
- Time:2024-02-21From:This Site
- Self drilling anchor bolts are an important part of support system. Through anchor rods and cement grout consolidation, the retaining structure and rock and soil form a complex that works together. It not only improves the self-strength and self-stabilization ability of rock and soil, but also ensures the stability and safety of retaining structures.
- View details
-
- Celebrate the 74th anniversary of the founding of the People's Republic of China
- Time:2023-10-01From:This Site
- On October 1st every year, we observe the annual National Day, commemorating the birth of our beloved motherland.
- View details
-
- Happy Mid-Autumn Festival!
- Time:2023-09-29From:This Site
- The Mid-Autumn Festival which also known as the Mooncake Festival. This annual festival falls on the fifteenth day of the eighth month of the lunar calendar and is called the Mid-Autumn Festival because it falls in the middle of the three months of autumn.
- View details
-
- Quality Control, the Vital Factor of A SDA Bolt Factory
- Time:2022-07-22From:This Site
- The self-drilling rock bolts are applied to support the tunnels, reinforce the foundations, and stabilize the slopes that are in bad conditions. The constructio
- View details
-
- Sinorock is gearing up for The Mining Show 2023 in Dubai!
- Time:2023-10-25From:This Site
- Sinorock is preparing for an exciting adventure at The Mining Show 2023 in Dubai! Come visit us at Booth J64 on November 21-22 to discover our exceptional mining solutions and immerse yourself in the cutting-edge developments of the industry.
- View details
-
- Sinorock Excited to Attend the 28th Mining Metals Central Asian 2023
- Time:2023-09-05From:This Site
- Sinorock Excited to Attend the 28th Central Asian International Mining Exploration & Mining Equipment Exhibition in Almaty, Kazakhstan
- View details
-
- Sinorock Set to Make a Splash at Mongolia Mining 2023 International Mining & Oil Expo
- Time:2023-09-05From:This Site
- Sinorock is gearing up to participate in the prestigious Mongolia Mining 2023 exhibition, slated to take place in Ulaanbaatar from October 3rd to 5th.
- View details