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Sinorock rock anchor bolt has many distinct characteristic

Le 16 septembre 2017, 11:37 dans Humeurs 0

In constructional engineering, rock anchoring support is mainly used for reinforcing and stabilizing stratum, and generally it will unite with other supporting structures. Specifically, one end of rock anchoring is inserted into stratum, and the other end connects with other forms of supporting structure. Through rock anchoring’s tension effect and deep soil layer’s friction action, it reaches function of stabilization.

Owing to distinct characteristic of strong adaptability, rock anchoring has little influence by the depth of foundation pit. It can be used flexibly.

Advantages of Self Drilling Rock Bolt

1. Strong applicability.

Self drilling rock bolt has strong applicability, especially in weak surrounding rock, it combines drilling and anchoring together. Self drilling rock bolt can be directly drilled into rock and soil. Its hollow bar can also be regarded as grouting gallery from inside to outside. It doesn’t need pore-forming and casing pipe to protect wall at back filled region, decomposed rock, broken rock, sand layer, clay layer, pebble bed and other weak surrounding rock.

2. Pressure grouting method.

Grouting is from bottom, which can realize pressure grouting. It should be controlled according to design value. Pressure maintenance should not be less than 10 min when grouting at orifices. Pressure grouting can rapidly make slurry fully permeate into cracks of rock and soil. After slurry diffusion and concretion into integrity, which can reach at purpose of permanent anchoring surrounding rocks.

3. Simple and fast for construction.

Continuous international screw thread and coupler make the process, installation and lengthening of self drilling rock bolt simple and fast for operation. After drilling to designed depth, it can instantly realize borehole cleaning, pressure grouting and self drilling rock bolt doesn’t need to be pulled out. Compared with common hollow rock bolt and common mortar rock bolt, its construction process is simple and benefit is obvious.

4. Lengthened to reinforce in narrow space.

Continuous screw thread can make self drilling rock bar be cut and connected arbitrarily. In narrow space, it can realize reinforcement of dangerous rock. At the same time, continuous screw thread of self drilling rock bolt has stronger bonding resistance than smooth steel tube, about 2-3 times than common mortar rock bolt.

Sinorock rock bolt system make construction done safely and cost effectively

Le 25 août 2017, 11:13 dans Humeurs 0

Soil nailing projects employing the Sinorock rock bolt system enjoy faster installation time compared to the traditional solid bar and casing method.

Manufactured via the cold rolling method and utilizing thick walled steel tubing, the Sinorock rock bolt system results in consistently higher yield strengths than the competition.

Sinorock hollow rock anchor bolt System product range offers tendons with ultimate loads from 210kN to 1,900kN including all system components such as drill bits for all soil conditions, couplers, spacers and anchor heads.

The Sinorock hollow rock anchor bolt System combines the geotechnical load-bearing system with the creation of a borehole. Thanks to the Hollow anchor Bolt system with simultaneous grout flushing, the installation procedure can be decisively eased and shortened.

Our company history is built on a commitment to excellence. We manufacture custom and non standard hollow anchor bolts and operate the highest volume distribution center of nuts and bolts and standard fasteners in China. This diversity provides our customers with a strategic advantage; certified quality, superior service and fast delivery.

Sinorock insures the best in quality by utilizing the latest and the most sophisticated in quality equipments.A highly proficient quality control team checks a product for functional reliability, specifications, durability, and aesthetics. We have established robust and rigorous inspection processes to guarantee the quality of Sinorock’s self drilling rock anchor  and related parts—nuts, bolts and more. The inspection is done at each stage of self drilling rock anchor manufacturing.

Sinorock allows its customers and suppliers to undertake their work safely and cost effectively.We implement the strict quality control system and provide quality self drilling rock anchor system. At Sinorock,we are proud of our quality program and the reputation that it has brought us.And our self drilling rock anchors product is a guarantee for your project.Sinorock is registered to ISO with SGS&CE.Our Quality Control Department is state-of-art. The latest in testing equipment supports and complements a quality system that begins with the process control program assures quality will be built into the product each step of the way, resulting in a completely documented and traceable finished product. 

SDA bolt integrates drilling and grouting in the construction

Le 21 juin 2017, 12:24 dans Humeurs 0

The general requirements of self drilling rock bolt design in underground projects are reliable technology and reasonable economy. So, there are some points in both engineering design and construction.

1. During site selection, design and construction, methods should be chosen to ensure rock body not loose.

2. Adjusting and controlling rock body’s deformation rationally and effectively to develop self supporting capacity and self drilling rock bolt’s bearing capacity.

3. During design and construction, self drilling rock bolt should be unified as a whole with rock body to play the common function of both.

4. Confirming the class level of rock body, obtaining its mechanical parameters to guide design and construction.

5. Under different geological structure, rock mass classification and mechanical property, different supporting ways should be chosen according to different calculation and design methods.

6. Combining geological exploration, design, construction and monitoring together, adjusting design parameter to make structural form accord with actual construction.

SDA bolt integrates drilling and grouting in the construction. After the hollow bar is installed, it’ll be grouted with cement slurry without casing and meanwhile it can avoid the gap in the cement.

The use of grouting pipe for continuous grouting can ensure 100% coverage rate and achieve a good anti-corrosion effect as same as the concrete reinforcing rebar. The cement slurry covering layer around the permanent anti corrosion SDA bolt can provide permanent anti-corrosion function.

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