2017年06月28日

Power hollow anchor bars

The construction method of self drilling anchor bar characterized by rapid construction has been successfully used in the construction of Beijing Metro Line 4, which has won valuable time for Olympic construction projects.

In unconsolidated/fractured ground conditions, self drilling hollow bars have become an irreplaceable product.

Sinorock® Self Drilling hollow bars are part of the excavation process and serve as primary soil/rock support for:

• Radial consolidation of the tunnel circumference supports the rock, forming a load bearing ring thus enabling the rock supporting itself (together with shot-create and other facing elements).

• Umbrellas and pore poling as pre-support in poor rock formation, shallow overburden and critical stress conditions.

• Face stabilization to sustain rock pressure for excavation with large cross sections.

• Root piles to divert stress.

The conventional method of installation involves drilling the Sinorock® Self Drilling hollow bars with water flush to the design layout and depth and in a second phase, independent of drilling, a grout adapter is added and a dense cement based grout mix is injected through the hollow core to exit through the flush holes at the drill bit filling the borehole annulus until the grout mix appears at the borehole mouth, once cured, enabling the transfer of stress from the rock/soil formation.



  

Posted by seo2@sinorockco.com at 13:30Comments(25)TrackBack(0)

2017年06月15日

Stong support-hollow bar

Heavy civil infrastructure projects can be some of the most difficult to coordinate and build. From site development and excavation to construction, coordinating utilities and site restoration there are many challenges faced on these complex projects.The reinforcement of expansive soil cutting slope has been a difficulty for the construction industry. And Sinorock carries a wide range of self drilling rock anchors to fit a variety of construction projects. You can choose among various lengths, load ratings and materials to find the perfect self drilling hollow anchor bars to safely complete your project.
Providing a ultimate load range from 261kN to 7909kN. All Sinorock self drilling rock bolt utilise a small diameter greased filled high density polyethylene sheathing, allowing for a greater number of individual strands to be contained in a given drill hole size.
Sinorock self drilling hollow anchor bars are used for rock reinforcement in Mining and Tunneling. Self drilling rock bolts limit the loosening of blocks out of the rock mass and shear displacements. Furthermore, the frictional force between individual rock layers is increased. Self drilling rock bolts with a variable anchor length enable pre-tensioning and thus an active force transmission.
There are also a great many other benefits of hollow anchor bar,include corrosion-prevention,long longevity,low density,environmental friendly,convenient,light,high tensile stress,easy cut,easy recycling,non-conducting and so on.
When you use hollow anchor bar of Sinorock, a large amounts of problems have been soloved in the manufacturing process and it is well apllicable to the poor ground conditions,such as loose soil,weak rocks,unsolidable layers and so on.
Sinorock's hollow anchor bar system is designed and fabricated to the international standards as set forth in the Post-Tensioning Institute’s Recommendations for Pre-stressed Rock and Soil Anchors. Bearing capacity is a function of the steel capacity as well as the geotechnical holding capacity.
Capacity of steel should be confined to 90% maximum test loading capacity and 60% lock-off load for permanent operation. Geotechnical capacity is a function of ground bond stress characteristics which can be moderated by necessary anchoring procedures.  

Posted by seo2@sinorockco.com at 18:56Comments(22)TrackBack(0)

2017年06月05日

Efficient Hollow threaded rod


Sinorock is a structural engineering company specializing in design for excellent hollow bar anchor system and is recognized as an industry authority in these fields.Sinorock's foremost strength is its innovative approach to solving unique engineering problems.
Sinorock has advanced hollow threaded rod factory,and we have completed more than 500 projects of specialist nature around the world, thus giving us a wealth of experience and understanding in this area of practice.Sinorock believes that ‘honesty is the best policy’, even in the highly competitive world of business. Throughout our twenty years of performance on the market,Sinorock has cultivated a reputation of integrity and professionalism in dealing with clients and business partners across the world, prioritizing your trust in us as the foundation of our company. Sinorock has been a complete manufacturing, marketing and sales company of “Anchor Systems” for over 10 years offering solutions worldwide to the utility and civil construction markets, landscape and horticultural markets and erosion control and specialty markets.


For these years,Sinorock has been renowned for its high quality products and technical expertise within the Building and Civil Engineering Industry.
Free technical support is available for all our customers in the Trade sector.Our technical advisory team can be contacted by phone, email or online.For technical advice or details of our extensive range of products please contact the Sinorock Technical Advisory Service. We will deal with any enquiries promptly.
Up to now,Sinorock hollow injection bolt systems have been exported to Asia, Oceania, Europe, Africa, North America,South America and widely used in tunneling, mining, hydroelectric station and civil construction. In future,Sinorock aims to be a global brand in the field of geotechnical anchoring.All this time, Sinorock is devoting itself to providing one-stop rock anchoring solution, which is safe, efficient, energy-saving and environment friendly, for global geotechnical anchoring projects.  

Posted by seo2@sinorockco.com at 16:19Comments(19)TrackBack(0)