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Self-drilling bolts are used for underpinning

Self-drilling anchor can be used in a variety applications. Use of the self drilling hollow anchor bolt in new construction will create a strong foundation before building begins. If soil conditions under a building have changed or an original foundation is not strong enough, self-drilling bolts are used for underpinning and for building settlement and stabilization.

Self-drilling bolts offer an ideal, flexible solution for earth retention systems. When subterranean reinforcements give way, bolts can be used to resist lateral pressure. Bolts can be used to stabilize damaged and failing earth retention walls.

The Sinorock self drilling anchor bolt is for stabilization of excavations and consists of the insertion of steel bars by mechanical procedures into the ground. The use of the drilling shaft 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.

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Sinorock SDA Installation process

Sinorock SDA Installation process:

Manual installation
Semi-mechanized installation
The anchoring and bolting industry has a demand for increased efficiency and quality of the installation of self drillng anchors. In addition increased safety by minimizing work in unprotected areas is becoming more important to contractors when installing bolts in difficult rock/soil conditions.

A change from the conventional post grouting method to a semi-mechanized installation method using an IRIA (Integrated Rotary Injection Adapter) method provides an adaptable installation process, which offers an improved solution and as such added value to the customer:

SDA installation becomes one work cycle performed only by the drill feed
No additional work cycle for post grouting
Reduced operation cost for additional equipment (working platforms etc.)
Better adjustment of the installation process in respect with the changing geology
Flexible selection and adjustment of flush media as needed (water,air or grout)

The advantage to utilise high speed ground stabilization with SDA versus cased borehole drilling solutions:
Same equipment
Same crew
Higher productivity

http://sinorockus.hatenablog.com/entry/2016/10/09/123127

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Low density, outstanding corrosion resistance-Sinorock SDA bolt

Self drilling rock bolt, because of its superior performance and got rapid development, and is widely used in many fields of civil engineering.It can join many different kinds of structure.As an economic and effective reinforcement measure, It has been extensively used in the foundation pit wall,tunnel, retaining wall, dam reinforcement and slope reinforcement engineering, can save a lot of masonry materialsand funds.

Sinorock self drilling rock anchor system is an incredibly versatile product known for its low density, outstanding corrosion resistance, and energy efficiency.

The advantages of Sinorock’s Self drilling rock bolt technology can be applied to new permanent construction, temporary construction and to the restoration of existing structures. During the process, steel reinforcing elements (nails) are installed and grouted over a regular pattern to create a soil that acts as a coherent mass with improved shear strength. This newly reinforced soil mass can then provide stability for landslides, cut slopes and deep excavations.

With the expertise provided by our highly trained and experienced staff, you can be sure your parts will be manufactured to your exact specifications and delivered in the timeliest manner. Committed to the quality control and reliability required to meet your – and your customer’s – high standards, Interstate Threaded Products is where manufacturing and customer service unite.

http://sinorockus.microblr.com/post/63902/The_expanded_use_of_the_SDA_bolt_provide_efficient_underpinning_of_the_foundations_of_buildings

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The self drilling anchor can be lengthened as required

Reinforcement work and slope stabilization are the foundamental parts in the rock construction and has been extensively implemented in the mining,tunneling,hydroelectric project,water energy,retaining wall and other large rocking engineerings.
The self drilling anchor supporting structure must have a good ductility,in other words,no doubt the destruction is inevitable occurs if the self drilling anchor supporting system that has no the pressure and yield properties. The self drilling anchor can be lengthened as required so it is well applicable to railway,tunneling,mining,hyrdroelectric station,slope stabilization,dam,brige foundation,river,breakwater,high-rise construction frastructures and othe projects .And it is more suitable for settlement,collapsed hole,fissures,landslide and so on.Meanwhile,it’s also very convenient for operating in narrow space or with limited headrooms and the quality of anchorage material is incomparable.

http://sinorockus.jigsy.com/entries/general/the-sinorock-range-of-hollow-anchor-bolt-offers-excellent-versatility-in-application

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Sinorock anchor makes the unify of drilling grouting and anchoring come true

Sinorock is dedicated to being the most reliable self drilling anchor supplier of the best quality products. We strive to exceed our customers’ requirements and expectations in every possible way.
Because of the excellent thickness seamless steel tube, the convenient and rapid thread forming process on surface and the perfect fittings, self drilling anchor can make the unify of drilling grouting and anchoring come true.
Features of self-drilling anchor system are as follow:
1) There is a bit with high penetrability on the top of self-drilling anchor system, it can penetrate into many kinds of rocks with common rock drilling machinery.
2) Self-drilling anchor system has continuous wave form thread of international standard, it can be used to drill into anchor hole with bits.
3) As a drill pipe, self-drilling anchor system doesn’t need to be pulled out. Its hollow can be the grouting channel.
4) A dynamical stop plug makes strong grouting pressure for grouting so that voids can be filled completely, broken rocks can be fixed, high-strength plates and nuts can pass the stress of deep surrounding rocks on perine surrounding rocks so that surrounding rocks and anchors can support each other.
5) A dynamical coupling set made by mechanical cutting process makes self-drilling anchor system can be lengthened while drilling so that it can be applied in smaller construction space.
6) Because of its trinity system, some special techniques such as casing pipe wall protection and pre-grouting are needless to make sure a good effect of drilling, anchoring and grouting. place.
To be the best manufacturer for anchor bolt products, Sinorock improves the service quality ceaselessly, we have established a comprehensive service system. It concludes 7*24 hours online consultation, great products packaging solutions and professional after-sales service.

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The Sinorock self drilling anchor is fully threaded

Sinorock is built upon its values of excellence.The reliability of our performance and the enduring quality of our products, are evidenced in all works we have done for our customers. We never rest and continually strive to improve our performance through our standard ISO systems and other initiatives.With testing laboratory inhouse,from the beginning of raw materials to finished products deliveried to our clients,our inspection department will gurantee everything runnig as per standard.

The Sinorock self drilling anchor is fully threaded and can be cut and coupled at any point.In some countries,it is also called hollow bar anchor.This makes transportation and installation of the threadbar anchors much easier. The productivity is 2 or 3 times greater than conventional ground anchor systems.

Sinorock’s culture is grounded in integrity and respect. This means holding the highest standards of ethical business culture. Our adhering to these standards is one of our most valuable assets.

Sinorock has a first-class safety program. We believe every accident is preventable, and we continue our pursuit of zero accidents.Year after year we are among the safest companies in our industry.

http://blog.roodo.com/sinorockus/archives/58527628.html

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Hollow anchor bolt is unique in hollow bar system

Hollow anchor bolt is unique in hollow bar system,with the properties of safer and faster,this kind hollow bar is very different from others in the R-thread and T-thread types.In the procession of anchoring,this hollow bar is more suitable for tunneling industry and geological engineering.In order to make full use of the advantages of many applications,the time of anchoring will be enormously saved.
R-thread and T-thread self drilling anchor all belongs to large-pitch thread. Compared with traditional Metric screw thread, they have lower adhesive strength with coupling and cement layer, while, they largely accelerate the speed of installing accessories. During the process of move and transportation, large-pitch thread can avoid being damaged and keep intact.Because of good construct design, R-thread hollow threaded bar can decrease the variation of stress, avoid concentration of stress and prevent the fracture during drilling process.
T-thread hollow bar anchors gets its name from the trapezoid or quadrangled section, which ensures the optimal bonding stress between anchor bar, coupling and grouting medium. The bonding stress of T-thread is 2.4 times of R-thread. While because of the big change of cross section, stress concentration will be caused easily and fracture tendency will be occurred in the conditions of drilling process and repeated fluctuating load.For projects facing geo-conditions above,hollow threaded bar should be considered as the main solution cuz it’s designed for optimized installation, tailored to the project’s needs.
And for a long time,Sinorock is an adherent of professional product and excellent service on hollow bar anchor system field.Our quality products, prompt delivery, and competitive pricing give our customers the advantage,also the foundation stone for opening the market.The company dedicate its innovation of service and product to gain us much praise from the customers.So the Sinorock is the best choice for most of the construction.

http://www.neighbour123.com/blog/show/sinorock-self-drilling-bolt-is-a-stronger-lighter-alternative-to-most-of-the-engineerings

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Sinorock is to be a powerful force in the engineering industry

coWith more and more countries are investing in tunneling, infrastructure construction, hydroelectric projects, High-speed rail construction, etc.Of course,more and more self drilling anchor bolt products are applied in the constructions.With so many different structures incorporate anchor bolts into their construction, it’s not hard to believe that Sinorock has taken large share of the self drilling anchor bolt market.Sinorock is to be a powerful force in the engineering industry.
Sinorock self drilling rock anchors adopted the advanced manufacturing process and procedures inproduction,ensuring high quality steels and tungsten carbides to guarantee the consistent highquality of the products since being ISO9001 accredited,through our many years of effort,wegradually developed independent development of various designs and manufacture of self drilling rock bolt toosand formed a perfect service & quality control system including tight quality control procedureand a complete after sale service teams.
Our production of self drilling rock anchor has increased progressively to cover the national markets due to the competitiveness level reached by our company after both the metal treatment technology innovation and the experience made in the field during these past
years.The updating of the production processes according to the quality assurance certification ISO 9001:2008, implemented since long time now, guarantees very high standards levels of our products.

http://sinorockus.jigsy.com/entries/general/self-drilling-bolt-palys-a-significant-role-in-supporting-rock-mass

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Sinorock self drilling anchors provide a range of structural benefits

From restricted access ground anchoring to open field anchoring, our projects range from residential to large scale commercial works. Our self drilling anchors provide a range of structural benefits, including resisting uplift to transferring external forces to the ground for large structures. Our high quality ground anchors also work to stabilise foundations and support structures for excavation, making worksites safer. We work closely with geotechnical engineers to assist with project design and selection of anchor type after consideration of ground conditions, ensuring lasting integrity of all our anchors.

Basically, Sinorock Self Drilling Anchor system can be used as reinforcing elements for most applications for Ground Engineering and Civil/Construction as well as Mining principals in various ground conditions. Particularly considering the economic point of view the system is used in a variety of loose/unconsolidated soils and ground conditions ranging from clay, sand and gravel to inconsistent fills, boulders, rubble and weathered rock. Use of the Sinorock self-drilling anchor bolt system in these conditions makes evident all the benefits and advantages of the system.

Sinorock provides services in the design and production of self drilling anchor bolt systems for mining,tunneling,hydroelectric&civil construction.Design and manufacturing capabilities cover the area of self drilling anchor bolt,corrosion protect system,rock drill and various accessories are among the standard productions at the factory.

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