Mechanics and Characteristics of Self Drilling Hollow Anchor Bar
Time:2016-06-04From:sinorock View:
Self drilling anchor bolt is a new and efficient method for supporting project, it composes of self-drilling hollow anchor bar, sprayed concrete and retaining wall of reinforced concrete frame, equipping with one-off wearable drill bit.Self-drilling hollow anchor bar has characteristics of tensile, bending, shear and high surface-bonding strength.
Self drilling anchor bolt adopts hollow anchor bar, through grouting, it fill cracks between anchor bar and rock soil. It doesn’t need casing pipe, even for stratum which is easy to collapse. At the same time, it can put drilling, grouting and anchoring together, enhancing efficiency. Besides, continuous thread on bar’s surface can enhance anchoring strength, which promotes anti-torque capacity.
The lifetime of self drilling anchor bolt structure buried in rock-soil layer depends on its durability, while the biggest threat for its lifetime is corrosion.
Based on current achievements of technical research, there are chemical corrosion, galvanic corrosion, high stress corrosion and scattered current corrosion in stratum, which are mainly caused by corrosive medium in stratum, such as PH value and electrical conductivity. Through water and air, they contact with anchor bolt’s outside surface. So anchor bolt always adopts isolation and insulation measures to avoid water and air when contacting with anchor bolt.
Common ways of protecting self drilling anchor bolt are grouting wrap, resin galvanized and casing pipe isolation methods.
latest news
-
- 3 Crucial Factors That Impact the Quality of Self-Drilling Hollow Bolts
- Time:2025-01-26From:This Site
- As we all know, the quality of the self-drilling hollow bolts is vital to the whole project. It determines if the project is safe for the people in future use. Then, what will affect the quality of the self-drilling hollow bolts?
- View details
-
- Self-Drilling Anchor Bolt Construction in Complex Geological Slope
- Time:2025-01-24From:This Site
- During construction, Self-drilling hollow anchor bolt integrates drilling, grouting and anchoring functions, which significantly improves drilling efficiency. And under the action of pressure pump, the grouting in the rock strata and voids is full, which ensures the grouting thickness and anchoring effect.
- View details
-
- How Does Self-drilling Rock Bolt Drill in Quicksand Geological Condition?
- Time:2025-01-19From:This Site
- This in-depth guide explores how self-drilling rock bolts function in quicksand geological conditions, covering the challenges, construction methods, and best practices for ensuring effective anchorage in unstable, fluidic soil layers.
- View details
-
- Quality Control: the Vital Factor of A SDA Bolt Factory
- Time:2025-01-09From:This Site
- Sinorock’s comprehensive quality control system, from supplier management to outgoing inspections, ensuring the highest standards for self-drilling anchor bolts in construction.
- View details
-
- International Women's Day with Strawberry-picking
- Time:2024-03-09From:This Site
- Marked the annual observance of International Women's Day, and to commemorate this significant event, Sinorock organized a special strawberry-picking event exclusively for its female employees.
- 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
-
- SINOROCK to Attend EXPOMINA PERÚ 2024 in Lima, Peru
- Time:2024-08-10From:This Site
- Sinorock to Attend EXPOMINA PERÚ 2024 in Lima, Peru
- View details
-
- SINOROCK to Participate in MINING AND METALS CENTRAL ASIA 2024
- Time:2024-08-08From:This Site
- SINOROCK to Participate in MINING AND METALS CENTRAL ASIA 2024
- View details
-
- SINOROCK Gears Up for UGOL ROSSII & MINING 2024 with Custom Mining Solutions
- Time:2024-05-15From:This Site
- SINOROCK is thrilled to announce its participation in the highly anticipated 32nd International Trade Fair for Mining Technology, UGOL ROSSII & MINING 2024. The event will take place at the Exhibition complex "Kuzbass Fair" in Novokuznetsk, Kemerovo region - Kuzbass, Russia, from June 4th to 7th, 2024.
- View details