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Home > News > Industry Information > Advantages Of Using Self Drilling Anchor Bolts as Soil Nailing System

Advantages Of Using Self Drilling Anchor Bolts as Soil Nailing System


In the ever-evolving landscape of civil engineering and construction, the soil nailing system has emerged as a crucial technology for reinforcing and anchoring soil bodies. This supporting system utilizes spindly rod pieces as stress components, combining them with sprayed concrete pavement to create a robust structure. As we delve into the current state of the industry, it becomes evident that the choice of anchoring elements significantly impacts the effectiveness of soil nail systems. This article will explore the essential aspects of soil nailing systems, shedding light on their characteristics and, the advantages of using self-drilling anchor bolts as soil nail system.

What is Soil Nailing System?

The soil nailing system is a sophisticated method that employs spindly rod pieces as stress components to reinforce and anchor soil bodies, in conjunction with sprayed concrete pavement. This comprehensive system comprises tense soil nail groups, reinforced soil bodies, sprayed concrete surfaces, and a necessary waterproofing system.

Applications of Soil Nailing System

The versatility of soil nailing systems is showcased in their applicability to various conditions, including reinforcement above underground water or foundation support, as well as slope reinforcement in artificial fill, clayey soil, and weakly cemented sand. The system is particularly effective when dealing with depths not exceeding 18 meters. Moreover, when combined with pre-stressed anchors, the depth capabilities of the soil nailing system are expanded.

Mechanism of Soil Nail Reinforcement

Through slip crack mechanisms, soil nailing reinforces the surrounding soil. The interaction between soil nails and the soil significantly enhances the stiffness and strength of the compound soil body, akin to a gravity retaining wall. As stress conditions change, the soil body undergoes deformation. However, the soil nail's reinforcement and the soil body's frictional force work in tandem, providing passive tension and stabilizing the soil.

Characteristics of Soil Nailing System

1. Reasonably utilizing soil body’s self-bearing capacity, taking soil body as the indivisible part of supporting system.
2. Its structure is light, flexibility is big. It also has good aseismicity and ductility.
3. It’s convenient and safe to construct and it doesn’t need occupy space.
4. Deformation is small after supporting, stable and reliable.
5. Total time of construction is short, low cost and economic.

Advantages of Self-Drilling Anchor Bolts in Soil Nailing Systems

As the construction industry continues to evolve, the utilization of self-drilling anchor bolts has become a game-changer in soil nailing systems. Sinorock, a leading manufacturer specializing in self-drilling anchor bolts, has propelled the industry forward with cutting-edge solutions.

self drilling anchor bolt system

Integrated Construction Process

Self-drilling anchor bolts revolutionize the construction process by combining drilling, grouting, and anchoring into a seamless operation. This integrated approach not only saves valuable construction time but also proves highly effective for projects with urgent timelines and complex requirements.

Overcoming Geological Challenges

Traditional construction methods often struggle with soft and broken surrounding rocks, leading to difficulties in forming stable holes. Self-drilling soil nail technology addresses this challenge by seamlessly navigating through challenging terrains, overcoming deficiencies in traditional methods.

Customizable Lengths for Versatile Projects

The full-thread design of self-drilling soil nails allows for easy connection to varying lengths, catering to the diverse demands of construction projects. This adaptability ensures that the soil nailing system can be tailored to meet specific project requirements.

Enhanced Bonding Stress

The bonding stress of T-thread self-drilling soil nails with couplers and grouting surpasses that of conventional rock bolts. This enhanced bonding strength contributes to the overall stability and reliability of the soil nailing system.

Accelerated Drilling Speed

Self-drilling soil nails adopt robust slagging measures, including high-pressure water and high-pressure air during drilling. This accelerates the drilling speed, making the construction process more efficient and timely.

Streamlined Construction Process

After drilling, the self-drilling soil nail remains in the hole, preventing collapse and simplifying the construction process. This not only saves drilling time but also reduces overall construction difficulty, contributing to a more streamlined and efficient workflow.

Simultaneous Drilling and Grouting

The innovative self-drilling technology enables simultaneous drilling and grouting, creating a grouting body with a rough surface that seamlessly connects with the surrounding rock. This ensures high-quality anchoring and stability, as grouting runs from the bottom to the mouth of the hole, allowing for comprehensive coverage.

Cost-Effective Solution

Sinorock's self-drilling anchor bolts present a cost-effective solution, especially in complex geological conditions. The comprehensive engineering cost of this technology is lower than traditional methods, leading to substantial cost savings. Additionally, the construction duration can be shortened by approximately 25%, further emphasizing the economic advantages.


In conclusion, the soil nailing system, fortified by the use of self-drilling anchor bolts, stands as a testament to the continual evolution of construction technologies. Sinorock's commitment to innovation has played a pivotal role in advancing the industry, providing solutions that not only overcome traditional challenges but also contribute to increased efficiency, stability, and cost-effectiveness. As construction projects continue to demand more robust and adaptable solutions, the integration of self-drilling anchor bolts into soil nailing systems remains at the forefront of cutting-edge engineering.