Handan Zhongfu Industrial And Mining Accessories Co., Ltd.
Handan ZhongFu company is a professional manufacturer for underground mining supporting products with over ten year experience. We can manufacture Split sets ,friction bolt, Combi split sets, Expandable friction bolt,Swellex, Threaded bar bolt, Cable bolt, Combi cable bolt, Welded mesh, Domed plate, Nuts, other mining Equipment.
Recommended Calculation Method For Drilling Hole Diameter Of Friction
Anchor Rod:
In rock formations: drilling diameter=(0.9-0.95) × anchor rod diameter
Drilling depth of anchor rod: anchor rod length+100mm drilling slope<1%
In coal seams: drilling diameter=(0.9-1.00) × anchor rod diameter
Drilling depth of anchor rod: anchor rod length+200mm, drilling slope<1.5%
Method of using friction rock bolt
Determine the anchor bolt hole position according to the design requirements
and use drilling tools to drill holes.
Method of using friction rock bolt
Blow away the rock powder inside the hole with compressed air.
Method of using friction rock bolt
Install the anchor plate on the rod body and use an impact drill to drive the
anchor rod into the hole.
Our address
West Side Of Jianshe Street, Southwest Industrial Zone, Linmingguan Town, Handan, Hebei, China
Phone Number
+8615830050566
zfgongkuang@aliyun.com
