First Mining Drc-Zambia 2023 First Mining Drc-Zambia July -August 2023 digital magazine | Page 31

MINING SUPPORT ( PTY ) LTD
MINING SUPPORT ( PTY ) LTD

FRICTION ROCK STABILISERS ( SPLIT SETS )

The NHR double ridged split set is a patented split set and gives you strength where you need it most – at the washer end of the split set . The 3CR12 , stainless steel double ridge con�guration on the split set has been tested to an average carry load of 187.5kN . The design of the split set enhances rock retention performance , whilst allowing them to tighten as lateral rock displacement occurs . The split set applies its frictional properties over the full length of the unit and does not point anchor like conventional bolts .
Our split set washers and utility hangars are designed and manufactured in-house to the client ' s speci�cations .
NHR Mining Support guarantees stock availability of the split sets . The split sets are supplied to the client in the length , wall thickness and diameter as required . The split sets can be manufactured from mild , hot dipped galvanized or 3CR12 stainless steel , to suit the client ' s support requirements and environmental conditions .
The patented NHR “ end anchor ” split set brings together a combination of the effectiveness of the split set friction stabiliser with the in- hole holding capabilities of a mechanical anchor bolt . There is no slipping of the bolt – it will maintain its anchor in both energy absorption and dynamic ground conditions , whilst exerting radial pressure over its full contact length .
Additional products available : Resin bolts , roof bolts , �exible eye bolts , pigtail eye bolts , shepherd crooks , ventilation piping ( both solid pipe and �exible ducting ), electrical cable ( all sizes ).
For more information , please contact
Raymond Botha raymondbotha @ nhrmining . co . za
Tony Davidson tony @ nhrmining . co . za