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rock bolt / self drilling anchor bolt / hollow anchor bar
The Self Drilling Anchor system is comprised of a hollow threaded anchor bar with a sacrificial drill bit that performs drilling, anchoring and grouting in a single operation. Self drilling anchor system is mainly used in slope stabilization, tunneling pre-support, foundations with micro piles etc projects.
rock bolt / self drilling anchor bolt / hollow anchor bar
Advantages and Characteristics as below:
1. No casings required, because anchor bars can be drilled into loose soils without needing casings to support the boreholes.
2. Fast drilling and installation, because drilling, installation and grouting are in a single operation.
3. Both rope threads and trapezoid threads are robust and ideal for rotary-percussive drilling and ensuring a high level of bond with the borehole gout.
4. The hollow core not only serves for flushing during drilling, but also for grouting after drilling.
5. Continuous threads ensure the bars can be cut and coupled at any point, or extended.
6. Different anchor bits are available for different ground conditions.
R thread anchor bar or called rock bolt, soil nail, which is a kind of threaded hollow bar, bar surface with an rope thread according to ISO 10208 & 1720. It was firstly invented by MAI on 1960S to solve the low construction speed on complicated underground works, nowadays; it is very popular all around the world.
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China Split set rock bolts Split set rock bolts FB33 FB46 for underground mining
Friction anchor system is mainly used in slope stabilization, tunneling pre-support, foundations with micro piles,
its also widely used in the railway system, metro project, etc. It can be installed in sites with weak rocks,
loose soil, weathered layer, sand with stone layer and so difficult to create a hole in complex formations.
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R32S Anchor Tool Self Drilling Anchor Bolt Threraded Bar Anchor Rod
Self-Drilling Anchor Tools: The self-drilling hollow bar anchor system consists of a hollow threaded bar with an attached drill bit that can perform drilling, anchoring and grouting in a single operation. The hollow bar allows air and water to freely pass through the bar during drilling to remove debris and then allow grout to be injected immediately after drilling is completed. Grout fills the hollow bar and completely covers the entire bolt. Couplings can be used to join hollow bars and extend the bolt length while nuts and plates are used to provide the required tension.
Self-drilling hollow bar anchor system is the most common used system for rock mass stabilization, especially in tunneling, underground mining and ground engineering industry. It is mainly used for the supporting engineering in the loose and broken rock stratal with difficult to drilling hole. It provides the optimal solution for soil nailing, lock bolting, micro-piling.
Self-drilling hollow bar anchor system fulfills current and increasing demands of the tunneling, mining industry and ground engineering for safer and faster production. The system provides advantages for all areas of its applications, where boreholes would require the time consuming drilling with casing systems in unconsolidated or cohesive soil.
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R38L 1000mm to 8000mm Anchor Tool Self Drilling Anchor Bolt Threraded Bar Anchor Rods
Anchor bolt
Anchor bolt means a rod that transfers the structures or geotechnical load to a stable rock
formations, it consists of rod, drill bit, coupling, plate, grouting stopper and nut. It has been
widely used in tunnling, mining, slope stabilization, tunneldiseases treatment and roof supporting
of undergroundworks. It is for loose ground(clay, sand friable etc.) Hollow anchor rod is made of
seamless tube with high strength.
Features of hollow grounting anchor bolt
• Particularly suitable for difficult ground conditions.
• A high rate of installation since drilling, placing and grouting can be performed in one single operation.
• Self drilling system eliminates the requirement for a cased borehole.
• Installation with simultaneous drilling and grouting possible.
• Easy installation in all directions, also upwards.
• Suitable for working in limited space, height and in areas of difficult access.
• Simple post grouting system. • Hot-dipped galvanizing for corrosion protection
Applications in Tunneling & Ground Engineering
• Radial bolting
• Slope stabilization
• Forepoling
• Micro injection pile
• Face stabilization
• Temporary support anchor
• Portal preparation
• Soil nailing
Self-Drilling Anchor Bolt Description
R25N R32N R32S R38N R51L R51N T76N Outside Diameter (mm) 25 32 32 38 51 51 76 Internal Diameter (mm) 14 19 16 19 36 33 52 Ultimate Load Capacity (kN) 200 280 360 500 550 800 1600 Yield Load Capacity (kN) 150 230 280 400 450 630 1200 Tensile Strength, Rm (N/mm2) 800 800 800 800
800 800 800 Yield Strength, Rp0.2 (N/mm2) 650 650 650 650 650 650 650 Weight (Kg/m) 2.3 3.2 3.6 5.5 6.5 8.0 16.0 Steel Grade EN10083-1 (Alloy Structure Steel) Compared to carbon steel, alloy structure steel has high anti-corrosion capacity and high mechanical. -
Hollow grouted IBO self drilling tunnel rock bolt mining anchor bolt bit coupling
Introduction Of Hollow Drilling Mining Rock Grouting Anchor Bolt
1, Hollow Drilling Mining Rock Grouting Anchor Bolt consists of hollow core with continuous hot-rolled outside thread
2, Hollow Drilling Mining Rock Grouting Anchor Bolt can application as injection anchor without casing, especially for non-stable boreholes
3, self-drilling installation, utilization of the anchor bar as drill rod with a single-use drill bit
4, easy extension of the anchor bars by anchor coupler
5, grouting or development of the grout body either simultaneously with drilling using a rotary injection adapter or afterwards
6, assembly of the anchor head with the anchor plate and the nut, stressing and lockingParameter of Hollow Drilling Mining Rock Grouting Anchor Bolt
Bar
R32L
R32N/21
R32N/18.5
R32S
R32SS
Outside Diameter (mm)
32
Internal Diameter (mm)
22
21
18.5
17
15
Cross Sectional Area (mm2)
356
363
433
440
522
Ultimate Load (kN)
260
280
280
360
405
Yield Load (kN)
200
230
230
280
300
Weight (kg/m)
2.8
2.85
3.4
3.45
4.1
Thread Type
ISO10208
Type of Steel
EN10083-1
Thread (Left / Right hand)
Left or Right
Length (m)
(1) x 2, x3, x4, x5, x6, x7, x8, x9
Optional of Anti-corrosion
Hot-dipped Galvanization: ISO 1461 Epoxy Coating
Bending properties up to standard ISO 1519
Impact properties up to standard ASTMD 2794 Adhesion up to standared ISO 2409:2007
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full threaded steel self drilling rock bolt / hollow anchor bar / anchor rods
full threaded steel self drilling rock bolt / hollow anchor bar / anchor rods
Advantages and Characteristics as below:
5. Continuous threads ensure the bars can be cut and coupled at any point, or extended.
6. Different anchor bits are available for different ground conditions.
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T38 T45 T51 600mm shank adapter drill pipe drilling rods rock drill rod for HL650,HL700,HL700T,HL710,HL800
TypeThreadLength(mm)Dia.(mm)Weight(kg)HL300R32400322.6L400,L410,L500,L510,L550R32245452.6HLR438L,HLR438TT38400383.3HL500-45/510-45R32550455.4HL500-45/510-45T38550455.6HL500-45/510-45T45550455.9HLX5 HLX5TR32500455.1HLX5 HLX5TT38500455.3HLX5 HLX5TR38500455.3HLX5 HLX5TT45500455.5HL600,HL600SR32600455.3HL600,HL600SR38600456.1HL600,HL600ST38600456.1HL600,HL600ST45600456.3HL650,HL700,HL700T,HL710,HL800T38600528HL650,HL700,HL700T,HL710,HL800T45600528.5HL650,HL700,HL700T,HL710,HL800T51600529.36HL1000,HL1000ST456705210HL1000,HL1000ST516705210.3 -
R25 R32 R38 T38 T45 T51 Rock Drill Rod for Mining Machinery
roduct Name: rock tools jack hammer drilling rod extension rod Description: rock tools jack hammer drilling rod extension rod Thread drill rod Made with best quality carbon steel bar,through heat treatment like Atlas.
Material: carbon steel bar MOQ: No MOQ required for testing and trial order Body Type Round shape and hexagonal type
Thread type R25,R28,R32,R38,T38,T45,T51 Diameter Hex25,Hex28,Rd32,Rd38,Rd45,Rd51 Type Thread extention Rod and MF rod Length 600mm-6400mm
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Rock Drill Bit Extension Rod Mining Drill Rod For Sale
roduct Name: rock tools jack hammer drilling rod extension rod Description: rock tools jack hammer drilling rod extension rodThread drill rod Made with best quality carbon steel bar,through heat treatment like Atlas. Material: carbon steel bar MOQ: No MOQ required for testing and trial order Body Type Round shape and hexagonal type Thread type R25,R28,R32,R38,T38,T45,T51 Diameter Hex25,Hex28,Rd32,Rd38,Rd45,Rd51 Type Thread extention Rod and MF rod Length 600mm-6400mm -
Hot Manufacturer Price Durable Drill Rig Used Rock Geological Core Water Well Drilling Rig Machine For Sale
Drilling Rock Speed:40M/Hour
Easy Operate
Competitive Price
Imported Accessories With CE1. The drilling rig hydraulic transmission of the rig effectively utilizes the power. This makes the overall power loss small and the drilling cost low.200m 300m 400m 500m 600m depth Truck crawler portable compressor DTH water well drilling rig2. The drill rig has more positive speed stages and 14-500r / min speed range, and the output torque is 13428-250N.m.3. The drilling rig has 2 reverse speeds, which is convenient for handling accidents.4. The air compressor drilling rig adopts a long-stroke double-speed mechanism, a mechanical
power head, and a power head stroke of 3400MM to improve drilling efficiency and reduce the occurrence of plugging and burning accidents.5. The water well drilling rig rig uses dual oil pumps for oil supply. A single pump is used for drilling, and a double pump is used for confluence when lifting. The power loss is small and the auxiliary time is short.6. The drilling rig machine has advanced structure and reasonable layout, which is convenient for maintenance, maintenance and repair.7. The crawler water drilling rig machine chassis is adopted, and the trip of the outrigger cylinder can be automatically loaded for 1.5m, which is convenient for relocation and transportation.8. The drill rig reserves some functional interfaces in the hydraulic system, and can expand the functions according to the technological requirements of different users.Technical ParameterThe Weight(T)8TDimensions(mm)5500*1950*2780The hole diameter(mm)140-325mmDrilling Depth(m)400metersOnce-time advance length(mm)3000/6000mmWalking speed(Km/h)2.5KM/HClimbing angles(Max.)30Minimum clearance clearance(mm)230Using air pressure(Mpa)1.7-3.3Air consumption(m³/min)23Equipped capacitor(Kw)92Swing speed(rpm)55-115Swing torque(N.m)8500-10000Drill pipe diameter(mm)Φ76 Φ89 Φ102Drill pipe length(m)1.5 2.0 3.0 6.0Rig lifting force(T)30 -
YT24 YT27 YT28 YT29 mining Pneumatic air leg rock drill
Product Application YT24 YT27 YT28 YT29 mining Pneumatic air leg rock drill
1.The rock drill is a kind of high efficiency air leg rock drill machinery.
2.It is mainly used for blasting holes and other drilling works in a quarries, railway construction, water conservancy construction and defence project facility.
3.It is suitable for drilling and blasting under various of rocks and any direction angles.
4.Blast hole dia is 34-42mm, drill hole depth is 5m.
5.This machine may match with FT160BD short air leg of FT160BC long air leg.SPECIFICATIONS for YT series pneumatic rock drilling machine with air legModelYT28YT27YT29AYT24CTY24Weight26kgs27kgs26.5kgs24kgs24kgsLength661mm668mm659mm628mm678mmAir pressure0.4-0.63Mpa0.4-0.63Mpa0.4-0.63Mpa0.4-0.63Mpa0.4-0.63MpaImpact frequency≧37HZ≧39HZ≧39HZ≧37HZ≧31HZAir consumption≦81L/s≦86L/s≦88L/s≦80L/s≦67L/sImpact energy≧70J≧75J≧78J≧65J≧65JCylinder*stroke80mm*60mm80mm*60mm82mm*60mm76mm*60mm70mm*70mmAir pipe diameter25mm19mm25mm25mm19mmShank dimension22*108mm22*108mm22*108mm22*108mm22*108mmDrilling depth5m5m5m5m5mBit diameter34-42mm34-45mm34-45mm34-42mm34-42mm
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