Hollow Grouting Anchor Rod

Hollow Grouting Anchor Rod

The main components of hollow anchor: hollow anchor body, grouting plug, backing plate, nut and anchor head (drill)

CHINA COAL

Hollow Grouting Anchor Rod

PRODUCT DESCRIPTION

The hollow grouting bolt body is a grouting pipe. Not only can the rod body be anchored after the grouting is pressed, but when the grouting pressure is high, part of the slurry will seep into the cracks of the anchor hole and play a role in strengthening surrounding rock. The upper lifting hole shall be provided with a slurry stopper and an exhaust pipe.

Hollow Grouting Anchor Rod

The main components of hollow anchor: hollow anchor body, grouting plug, backing plate, nut and anchor head(drill)

Hollow Grouting Anchor Rod

PRODUCT FEATURE
01

INTEGRATED DRILLING, GROUTING AND ANCHORING

Hollow self-advancing bolts are mainly used for excavation and support construction in fault fracture zones, replacing ordinary mortar bolts under complex geological conditions. The bearing capacity of the surrounding rock is improved, the overall stability of the surrounding rock is ensured, and it has good application value.

Hollow Grouting Anchor Rod
02

PREVENTING THE OVERFLOW OF SLURRY AND STRENGTHENING THE ROCK MASS

The hollow grouting anchor rod is first inserted into the hollow rod body to inject cement slurry from the inside to the outside of the hole, and the outer end of the anchor hole has a grouting plug and a pallet, which effectively prevents the slurry from overflowing and ensures that the rock mass within the anchoring range is consolidated.

Hollow Grouting Anchor Rod

Hollow Grouting Anchor Rod

HOLLOW DESIGN FULL GROUTING
EASY TO INSTALL

03

CONTROL THE INITIAL DEFORMATION OF THE ROCK MASS TO PREVENT THE BROKEN ROCK FROM FALLING

After the grouting is solidified, tighten the nut with a wrench to provide a resistance of about 10KN of the pallet. A spherical pressure zone similar to the mechanical anchor is formed at the top of the bolt to control the primary deformation of the rock after excavation and prevent the broken rock from falling

Hollow Grouting Anchor Rod

HOLLOW DESIGN

CHARACTERISTICS
  • Realized the function
    of grouting
  • No need to process threads on site,You can easily install the pad,Nut.

EASY TO INSTALL

Hollow Grouting Anchor Rod

PRODUCT ANALYSIS

01 The barbs on the anchor head can position the anchor rod in the drilled hole and ensure that the rod body is well centered.

02 The important components in the assembly play a major role in anchoring and supporting

Hollow Grouting Anchor Rod

03 Maintain the grouting pressure during the grouting process, so that the slurry is fully filled into the surrounding rock gaps

04 Withstand greater surrounding rock pressure。

05 Concentrate the surrounding rock pressure on the pad

Hollow Grouting Anchor Rod

PRODUCT PARAMETERS

Parameter of High Strength Mining Self Drilling Hollow Rock Anchor Drill Bolt

Description unit R25 R32N R32N_1 R32S R32SS R38N R51N T30N T40N T52 T76N
Outer Diameter mm 25 32 32 32 32 38 51 30 40 52 76
Inner Diameter mm 14.5 21.5 20 20 18.5 23 36 15 21 26 52
Area mm2 255 331 369 369 407 548 892 331 803 1274 1991
Ultimate Tensile Load KN 200 280 280 360 400 500 800 260 660 929 1660
Yield Load KN 150 230 230 280 330 400 630 220 525 730 1200
Ultimate Tensile Strength Mpa 784 846 758 976 983 912 897 785 822 729 837
Yield Strength Mpa 588 695 623 759 811 730 706 665 654 573 628
Nominal Weight kg/m 2 2.6 2.85 2.9 3.2 4.2 7 2.6 6.3 10 15

Hollow Grouting Anchor Rod

COMPANY PROFILE

China Coal is a professional manufacturing base of mines support equipment, transport equipment, lifting equipment, spray equipment, drilling equipment, ventilation equipment, lifting equipment and other products, as well as research and development new product and mine construction products with advanced high technology.

Hollow Grouting Anchor Rod
Trustworthy manufacturers

COMPANY PROFILE

Hollow Grouting Anchor Rod

Shandong China Coal Industry and Mining Group is located in Jining High-tech Zone, "the hometown of Confucius and Mencius, the canal capital", with a plant area of 20,00 0 square meters and a free office area of 60 00 square meters.

The company recognizes through the safety quality systemCertificate: ISO9001 quality system certification, from Raw material selection, strict control of finished products Every production processand quality quality inspectionTesting to ensure product safety,environ mental protec-tion, qualityreliable.

Hollow Grouting Anchor Rod


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