Coal mining requires a large number of tunnels under the ground.To keep roadway unblocked and surrounding rock stable, the split set could make the roadway safe. Assembly is one of the main materials of tunnel support, which has the characteristics of simple installation and convenient use. The Split set also has other names such as Split Set, Friction Bolt , Split Set With Washer, Strata Bolt, Rock Bolt, Mine Rock Bolt, friction stabilizer and etc.
What is a split set?
Split bolt is a new type of full-length active reinforcement rock bolt. It is a high-strength steel pipe with a longitudinal notch. When installed in a borehole slightly smaller than the diameter of the pipe, it exerts radial pressure on the wall immediately for the full length of the borehole, preventing the surrounding rock from sliding along friction. Coupled with the support strength of the bolt tray, the surrounding rock is in a state of three-way stress, which realizes the stability of the surrounding rock.
In the case of rock anchoring movement caused by blasting vibration, the late anchoring force increases obviously. When the surrounding rock has obvious displacement, the bolt does not lose support resistance.
Split the composition of the set
The removal group includes bolt and pallet.
1. The bolt is made of thin sheet rolled into a tube with a full-length longitudinal joint. It is used as a bolt in the field of support, so it is called split bolt.
2. A tray is equivalent to a plate. It is square in shape, with a bowl in the middle, is the tension of the bolt to the surrounding rock member. The tray used for dividing the plate is usually thin.
The split set has the following contents:
1. High strength alloy strip steel is used as raw material. One end is forged with a conical head for the bolt perforation, and the other end is welded with an iron hoop to bear the weight of the plate.
2.the installation is simple, just impact can be completed.
3. No anchorage agent is needed.
4. Great friction between rock and bolt.
5. with high shear strength and tensile strength.
6. equipped with high strength pallet, pallet force uniform.
7. The depth of drilling hole is greater than the depth of anchor bolt.
8. can timely provide radial and axial support. It is not suitable for permanent support in soft rock.
So this is split sets. Split set support has the advantages of timely and effective, cost saving, and effective maintenance reduction. With the increase of market demand, proper use of split set can greatly reduce the mining cost and obtain good economic benefits.
Tanrimine Metal Support Co., Ltd (TRM) is a leading professional manufacturer for split set,Friction Bolt, Friction stabilizer, Combi Plate, Split Set Washer with a full range of its accessories.
Post time: Feb-10-2023