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.
the principle of rock bolt support
Suspension
anchor rods will be weak roof hanging on the more stable solid rock layer; or anchor rods will be due to the roadway
excavation caused by the loosening of the rock connected to the loosening of the area outside of the integrity of the solid rock, so that the loosening of the block will not fall
the combination of beam role
anchor rods will be layered rock body between the layers of linking and fastening, anchor rods to several layers of thin rock combined into a similar rivets reinforced combination of beams, mentioning the overall bending capacity of the rock layer.
squeeze the role of reinforcing the arch
under the action of prestressing, each anchor around the formation of an approximate cone-shaped compression zone
, multiple anchors together cone-shaped body compression zone overlap each other in the surrounding rock to form a continuous compression zone, play a role in maintaining the self-stabilizing, bear the ground pressure, to prevent the upper part of the surrounding rock of the loosening and deformation. Improve the pre-tensioning force, enhance the nodal gap surface or rock mass friction, reduce the rock rotation and slippage, increase the bonding force of the rock body, improve the strength of the broken rock body.
summarize
The three effects complement each other and work in combination, with one effect being more pronounced under different geological conditions.
Our address
West Side Of Jianshe Street, Southwest Industrial Zone, Linmingguan Town, Handan, Hebei, China
Phone Number
+8615830050566
zfgongkuang@aliyun.com
