VSL MINING & TUNNELING SYSTEMS VSL. mining and tunneling

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1 VSL MINING & TUNNELING SYSTEMS VSL mining and tunneling

2 VSL Mining & Tunneling Bolt systems VSL offers three type of bolting system for the mining & Tunnelling industry VSL-S Solid Threaded bolts. Continuous Hot rolled threaded bars in grade B500, S670, B450 & S650. VSL-B Self drilling Injection Anchor Bolts. Self Drilling Anchor bolts are used for anchoring in poor ground, cohesive and non cohesive soils and in case of unstable bore holes. Also used for reinforcement ahead of the tunnel face in terms of spiles or umbrella support or other support application VSL-E Expansion or Friction bolts. The Expansion bolt is temporary rock reinforcement in mining & tunnelling, bonding forces between the friction bolt and rock masses are caused by form closure and friction transfer between the bore hole wall and the bolt which is expanded by water pressure. All our bolts are produced in Europe at various locations, well established Manufacturing Quality Control System, National & International Approvals are available. Distribution warehouse in Melbourne, Brisbane & Singapore Solid bolts could be supplied with Cement grouted anchor, Resin anchor or Expansion shell anchor. Different grades of bars are available to meet the versatile needs, World wide references. Superior Quality at Affordable Price 2

3 VSL-S BOLT SYSTEMS VSL-S Bolt Systems Continuous hot rolled thread bar systems, salient features are screwable thread ribs over full length of bars providing cutting or extension at any position of the bar shape of thread ribs make VSL-S Bolt-Systems resistant against rough handling pre-assembling of anchor bolt accessories possible availability of special treated bars and accessories as hot tipped galvanized, epoxy coated, etc. short delivery time individual lengths are available various diameters in different steel grades of threaded bars are available for many different applications (salt and coal mines, tunneling, etc.) VSL-S Bolt-Systems are used for a wide field of applications, i.e. fully grouted anchors, resin anchors, expansion shell anchors or torque nut anchorage systems, etc. fully grouted anchor bolt resin anchor bolt expansion shell anchor bolt S450 S650 S500 S670 available - not available VSL-S Bolt-System Mining S450 / grade 60 S650 / grade 90 3

4 VSL-S BOLT SYSTEMS dome nut, 30 torque nut, 30 domed washer, 30 fix nut expansion shell S450 accessories mining dome nut, 30 torque nut, 30 domed washer, 30 coupler standard expansion shell S650 accessories mining further accessories available on inquiry VSL-S Bolt-System tunneling S500 (Bst 500 S) / grade 75 S670 / grade 97 4

5 VSL-S BOLT SYSTEMS dome nut, 30 domed washer, 30 coupler, standard lock nut, short expansion shell S500 accessories tunneling S670 accessories tunneling further accessories available on inquiry 5

6 VSL-E BOLT SYSTEMS VSL-E Bolt Systems - Friction or Expansion bolts Bolting for tunnels and gallery, provides quick fixing & anchoring with high safety VSL-E Bolting-Systems range features friction or expansion bolt with superior product characteristics to meet the most demanding roof support applications. The high load-bearing capacity combined with excellent elongation cycles for low costs. Please refer to specification sheets for detailed product information. Friction bolt with faceplate inserted, adjusted and expanded into the drill hole Case at the top of friction bolt with hole to inflate the bolt with pressure water Full view of the friction bolt Face plate at the top of friction bolt, no nuts necessary Performance 1) - Original cross-section shape of the VSL-E Systems friction bolt when inserted into drill hole 2) - Water is pumped into the bolt at 30 Mpa expanding the steel tube 3) - The water runs out and the bolt is pressed against the rock providing high load friction capacity Benefit Immediate full length support for faster excavation cycles and safer working conditions Simple and clean installation Adjust to borehole irregularities Excellent elongation properties add to application flexibility Reliable installation quality Flexible to variations in drill hole diameter Versatile bolting solution for variable ground conditions No grouting or use of chemicals needed to avoid contamination The VSL-E Bolt Systems rock bolts effectively tie rock across fractures and fissures with its high loading capacity. The elongation properties allow for substantial rock movements without shearing the bolts. The rock bolts are manufactured according to the ISO 9002 standards. Each batch of material and finished rock bolts are tested for ensure final quality. 6

7 VSL-E BOLT SYSTEMS Technical specifications The VSL-E Bolt systems rock bolts are designed to satisfy the most demanding rock support challenges in the construction and mining industries. The high load capacity combined with excellent elongation properties provide for cost saving and safer working environment. The range consists of three products. The VSL-E Standard for lighter applications with load capacity of 12 metric tons, VSL-E Midi load capacity of 16 tons and the robust VSL-E Super with capacity of 24 metric tons. Variable length up to Tube thickness Bolt diameter Original tube Hole diameter Optimal hole Minimum breaking load Minimum elongation Yield strength Face plate Face plate hole Weight Steel type (*) consult other face plate measure STANDARD MIDI SUPER 8000 mm 2mm 26 mm 41 mm -39 mm mm 120 kn 10% 80 % 150*150*6 (*) 30 mm 2.00 kgs/m S 355 MC 8000 mm 2mm 36 mm 54 mm mm mm 160 kn 10% 80 % 200*200*6 (*) 40 mm 2.80 kgs/m S 355 MC 8000 mm 3mm 36 mm 54 mm mm mm 240 kn 10% 80 % 200*200*8 (*) 40 mm 3.75 kgs/m S 355 MC 240 kn 160 kn CAPACITY kn 120 kn CAPACITY kn CAPACITY kn 10% 10% 10% ELONGATION ELONGATION ELONGATION STANDARD MIDI SUPER Insertion sequence A - Drilling of a bore hole manually or by using a jumbo or a rock bore hole B - Insertion of VSL-E friction bolt into bore hole C - Pumping of water into the VSL-E friction bolt until the water pressure reaches 30 Mpa. The bolt is now secured into place D - Withdrawal of the water pump from the end bushing. Bolting is now completed. VSL-E VSL-E Accessories A full range of pneumatic and electric water pumps Robust face plates Load tester 7

8 VSL-B BOLT SYSTEMS VSL-B Bolt Systems - Self drilling injections anchor bolt system An economical and simple self-drilling anchor system. Also suitable for difficult grounds (clay, sand, friable etc.). The anchor rod also serves as drill bar. The anchor is fixed by injecting cement mortar through the central hole of the rod. Fields of application Stabilization of vaults, side walls and excavation front in tunnel construction Stabilization and enlarging of existing tunnels Pipe screens Underpinning of existing buildings Stabilization of slopes and foundations Foundations for; Protections against avalanches, Noise protection walls, High voltage poles, Antennas, Cable cars and cableways, Wall anchoring, Double protected active anchors. Installation Installation of VSL-B Bolt Systems - Self drilling anchors the same pneumatic or hydraulic drilling equipment is used as for normal drilling. The self -drilling anchors can be grouted both during and after drilling. According to the soil characteristics the following aspects have to be decided upon: 1. Type of drilling head Tempered for soft soils With WIDIA insert for hard soils Special heads for clay 2. The drilling head diameter suitable to the selected type of corrosion protection and of the rock coinsistence. 3. The anchor length According to the type of drilling carriage the anchor length is normally 3 to 4 meters, for deep anchors special coupling sleeves can be used. Technical Data TYPE RB 25/13 RB /24 RB /20 RB /18 RB /15 RB 38/15 RB 44/24 RB 51/28 RB 63/43 TB 76/56 TB 89/69 TB 103/83 TB 135/75 mm External Ø Nominal Ø Weight Area Ultimate load G.U.T.S. In mm in Kg/m lbs/lf mm² in² kn kips Tensile Yield Point kn Design 1 70% G.U.T.S. kips kips Design 2 60% G.U.T.S. kips

9 VSL-B BOLT SYSTEMS Basic Material Data (non-rolled tube) VSL-B BOLT SYSTEMS /34 /20 /15 38/15 51/28 63/43 76/56 88/69 103/83 Ø External mm Ø Internal mm Breaking load kn Tensile yield point kn Anchor Data TYPE OF THREAD Ø External mm Section mm Weight kg Breaking load kn Tensile yield point kn Working load kn R R All technical data are subject to change without prior notice Drilling machines 25/13 /24 /20 /18 -> Pneumatic or manual drills, left turning /15 38/15 R R R R R /24 51/28 -> Hydraulics drills, left turning 63/43 R /56 89/69 103/83 ->Hydraulics drills, right and left turning 103/53 135/75 Grouting Pumps For grouting of the VSL-B Bolt Systems - Self drilling anchors our grouting pumps with constant flow rate and constant pressure are used, together with thixotropic premixed plaster. Cement Comsumption Special equipment can be installed on our grouting pumps to measure the effective grout consumption. Site Acceptance We provide special systems with hand or electric pumps for pretensioning or breaking load test of the installed anchors. Materials The basic material of the VSL-B Bolt Systems - Self drilling Anchor is a special steel pipe with narrow tolerance, on which is machined a cold rolled continuous thread. The sleeves are fabricated from special steel pipes and have a higher tensile strength than the anchor rod. The nuts are made of special hot pressed steel and are treated after fabrication to guarantee the requested resistance. Corrosion Protection 1. Simple protection - is supplied by the cement plaster or resin plaster or resin which surrounds the anchor. The thickness of protecting layer is normally: 10mm in rock and 20mm in loose material. In order to guarantee a constant thickness of the plaster or resin covering we recommend the use of spacers. 2. A double corrosion protection is possible through: Painting with special paints after adequate surface preparation Electrical galvanizing and if requested, painting with epossidic paints. Wrapping of the anchor in a plastic or steel pipe grouted with cement grout or polyurethane. Wrapping of the anchor in a hot shrink pipe. For special purposes we recommended the use of stainless steel anchors. R Pretensioning By using a plastic or steel pipe (in some cases injected with polyurethane) it is possible to pretension a part of the anchor. Product certifications 1. Steel factory certificate - Our pipe suppliers provide to us a certificate from the steel factory for each casting 2. Shop tests - Anchors and all accessories are constantly submitted to severe test in our shop, following a detailed test programme in accordance with the requirements of the EN ISO 9001:2000 quality assurance standards. 3. Certification by external authorities - Periodically the quality of our products is certified by external, internationally recognized authorities. 9

10 VSL-B BOLT SYSTEMS Items Description VSL-B BOLT SYSTEMS /34 /20 /15 38/15 51/28 63/43* 76/56* 88/69* 103/83* ROD ROLLED ALONG ENTIRE LENGTH L = 1-12 m R R R R38 R51 R63 R76 * Quantities and terms of delivery upon agreement R89 R103 CROSS DRILL BIT Ø64 TEMPERED Ø140 CROSS DRILL BIT, WIDIA BUTTON DRILL BIT Ø100 Ø140 SPECIAL DRILL BIT TRIPPLE EDGED DRILL BIT FOR ARCILLACEOUS GROUNDS Ø64 PERCUSSION BIT L90 L90 on demand COUPLING Ø42 Ø42 Ø42 Ø61 Ø80 Ø95 Ø125 L120 L120 L140 Ø160 L200 L250 L200 L300 L350 SPHERICAL ANCHOR PLATE 150x150 8 Ø37 150x150 8/10 200x Ø37 200x Ø37 200x200 12/15 Ø45 250x250 20* 300x300 20* Ø60 300x300 25* Ø75 300x300 25/30* Ø85 300x300 30* Ø100 On demand *Bevelled plate REINFORCED SPHERICAL 150x x x x200 ANCHOR PLATE SPHERICAL NUT SHANK ADAPTER INJECTION ADAPTER 1 ROTATING INJECTION ADAPTER ROTATING INJECTION ADAPTER FOR HIGH PRESSURE HYDRAULIC PRESS FOR TENSION WITH MANUAL, ELECTRIC OR PNEUMATIC PUMP 10

11 VSL-B BOLT SYSTEMS Mixer Pumps Economical electric, pneumatic or hydraulic mortar mixer-pump for injection and consolidation of boreholes. Remote control on request. B 2500 B 600 CONVEYING CAPACITY max l/h 600 l/h CONVEYING DISTANCE max. 55 m 30 m PRESSURE max. 60 bar 30 bar DIMENSIONS max. 1600/790/ /600/1050 WEIGHT ca. 230 kg 160 kg MOTOR kw Anchor Mortar The anchor mortar is produced in various compositions: normal, Sulphate-resistant and with granulation from 0.3 to 0.8 mm. 11

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