Rock bolting system is an ideal anchor system for underground construction and has been an environmental solution for tunneling projects. Rock anchor bolt has the advantage of integrating drilling, grouting and anchoring in a single operation. With the development of geotechnical anchoring technique, it has been used for more and more projects, such as railway construction, tunneling, mining, hydropower station, dam, bridge base, foundation reinforcement of buildings. Furthermore, it is workable for the repair of ground subsidence, holes collapse, crack, landslip and other geological disaster.

Sinorock rock bolting system can support and raise existing foundations through grouting micro-piles casing with the performance of less material consumption and higher carrying capacity. It is a natural fit for applications, like micro-piling for tentioned foundation, micro-piling/underpinning and micro-piling to prevent buoyancy. Sinorock has delivered millions of rock bolting system to the Nordic mining industry for safe and secure rock reinforcement. The self drilling rock bolts designed and manufactured by Sinorock are a simple and economical means of rock reinforcement. The depth of their knowledge in geotechnical construction, together with the most advanced equipment, translates to successful specialty reinforcement system installation throughout the world.

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Sinorock drill hollow bolt is developed with high tensile load and pressure resistance. It combines rock bolt with injection function and is widely used in geotechnical engineering projects such as tunnel reinforcement/refurbishment, cliff and slope reinforcement, wall stabilization, rock-netting retention, parapet wall reinforcement and many others. After injection work, the bolt can remain in the borehole and bear load with plate and nut at the end. It has very good bonding force with all grouting materials. Due to high injection pressure, it can realize full grouting and improve project quality.

Manufactured with the best quality of materials Sinorock hollow anchor bolt has many advantages. It has good penetrability in various types of rocks and after the construction there is no requirement to pull the hollow anchor bolt out. The penetrability bit is on the higher side and the plates and nuts are of higher strength. It substantiates three operations as a whole - drilling, anchoring and grouting. The stress that surrounds the rock is evenly shifted to the wall, which results in providing support to each other amid the anchor and adjoining rock. When high rates of grouting pressure is maintained, the cracks get completely filled and the overall fractured rock is made better.

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Self drilling rock anchor system are widely used in mining and geotechnical engineering as ground anchorage. Many bolts are usually installed by grouting in pre-drilled holes in the rock mass. Generally speaking, the self-drilling rock anchor is applicable for the stratum which suitable for retaining wall and soil nail wall, and it also suitable for the stratum which suitable for pre-stressed anchor bolt. For the anchoring technology with drilling operation, drilling often becomes the most critical process, and directly affects the bearing capacity of the self drilling rock anchor system.

Drilling in loose soil and formation which affected by groundwater, hole collapse is a common phenomenon, which need to increase the difficulty and cost of construction by using casing pipe, casing pipe can improve the drilling speed, but have adverse effects on the bonding mortar and hole wall. Self drilling rock anchor system is most suitable for the formation of pebbles and boulders, drilling is completed through grouting of surrounding rock disturbance part of effective reinforcement, expansion the diameter of self drilling anchor bolt, If there is a small amount of water seepage in the drilling process, it can also be used to blow cement powder into the hole by using high pressure wind direction. Form temporary protective wall around drilling hole to reduce collapse.

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The self-drilling ground anchor is for stabilization of excavations and consists of the insertion of steel anchor bars by mechanical procedures into the ground. The use of the drilling anchor bolt as grouting conduit for filling the borehole from the bottom-up guarantees a positive and complete embedment of the tension elements, thus eliminating the possibility of voids. It also avoids additional grouting tubes, air vents and post-grouting.

Sinorock self-drilling hollow anchor bolt can be used for any ground conditions and are particularly well-suited for unstable or reveling geological conditions where there is the risk of collapse. Commonly the traditional anchor installation requires drill casing to maintain an open hole between drilling and anchor installation. Sinorock self-drilling ground anchor serves as drill rod, grouting conduit and anchor tendon, so that the drill casing is no longer required. The material costs are therefore much lower. Lenghts are easily coupled as drilling proceeds to achieve whatever finished anchor length may be needed. With the continuous thread on the surface the anchor bolt can be cut to any length or connected by coupling according to your requirement. These threads are also good to transportation, handling and installation in close quarters. They are also highly resistant to dirt and damage.

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​Self Drilling Bolts are widely used as an efficient anchoring means for drilling, grouting and anchoring in tunnel pre-support, slope anchor, mining, roadbed reinforcement and other projects, they can work well in narrow space. Self Drilling Bolts combine drilling, grouting and anchoring together. They can ensure the anchoring effect in complex ground conditions and they are safe, reliable and efficient.

R thread Self Drilling Bolt is suitable for broken rock, loose soil and conditions which are difficult to drill holes, such as fracture zones, decayed rock, gravel, sandy gravel, backfill ground. They often can be used for permanent support for tunneling. In slope stabilization, ​rock bolts and soil nails can be used to maintain and strengthen soil and rock. What’s more, they are widely used for micro pile reinforcement. Micro pile can transmit structural load to foundation, and then limit the deformation of buildings.

Sinorock is one of the most reliable rock bolts manufacturer, offering self drilling bolts to the clients at industry leading rates. Their huge supply network facilitates timely dispatch and delivery of ordered products. These products are manufactured using quality approved raw material and advanced industrial technologies.

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Self Drilling Anchor Bolt has great supporting effect and ensures the security of the project and the long-term stability. The support with this material is different from the traditional way of support. The traditional support way is often caused by passive collapsed rock mass under loading, but the support with Self Drilling Anchor Bolt can actively strengthening rock and soil body. In this way the deformation can be effectively controlled.

Sinorock Self Drilling Anchor Bolt is a reliable and convenient anchoring system which is applied in complicated geological conditions for support work. It is particularly applied in the following ground conditions: weathered rock, gravel layer, backfill, hard conglomerate and so on. Self Drilling Anchor Bolt provides advantages for all areas of its applications.

Sinorock has marked a distinct position in the market by providing a high quality range of Self Drilling Anchor Bolts and they are widely used in the mining industry for transferring load from the unstable exterior.

With the advanced technology, top class equipments Sinorock can offer you the best products that you want. Just feel free to contact them when you have the requirement.

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