Split set mining ground support product

Split set is a new type of full-length anchorage and active reinforcement of surrounding rock. Its three-dimensional part is a longitudinally-slotted high-strength steel pipe. When installed in a drilling hole slightly smaller than the diameter of the pipe, it can immediately exert radial pressure on the hole wall and prevent the friction of surrounding rock from sliding down within the full-length range, plus the bearing force of the anchor tray plate, so that the surrounding rock is in a three-way stress state. And achieve rock stability. When the surrounding rock is displaced by blasting vibration, the anchoring force increases obviously in the later stage. When the surrounding rock is displaced significantly, the bolt does not lose its support resistance, and it has better characteristics than the expanded shell bolt.

Product Feature

l, the raw material uses high-strength alloy strip steel;
2, the simplest installation;
3, no need for anchoring agent;
4, the friction between the bolt and the rock mass is large;
5, with high shear and tensile strength;
6, equipped with high strength pallet, pallet force is uniform;
7. The height of roadway is greater than the length of anchor rod.

Product Application

1, according to the design requirements to determine the hole location of the anchor rod, drilling with drilling tools.
2. Blow the rock powder inside the hole with pressure wind.
3. Install the anchor disc on the rod body and drive the anchor rod into the hole with a hammer drill.
Recommended calculation method of hole diameter of pipe seam bolt:
In rock formation: Diameter of drilling hole = (0.9-0.95) x diameter of anchor rod
Bolt drilling depth: bolt length +100mm drilling slope < 1%
In coal seam: diameter of drilling hole =(0.9-1.00)× diameter of anchor rod
Bolt drilling depth: bolt length +200mm drilling deviation slope < 1.5%

Product attribute

1.Pipe joint bolt has a high bearing capacity. Because pipe joint bolt generally adopts steel pipe as bolt material, its strength and stiffness are high, and it can withstand greater tension and shear force. In underground engineering, pipe joint anchor can effectively fix soil, enhance the stability of soil, and ensure the safety of engineering construction and operation.
2.Pipe joint bolt has good corrosion resistance. Since the underground environment usually has a high humidity and water content, the bolt is susceptible to corrosion. The use of steel pipe as the material of pipe joint bolt can effectively resist corrosion, extend the service life of bolt and reduce maintenance costs.
3.Pipe joint bolt has strong adaptability. Pipe joint bolt can be customized according to the needs of the project, suitable for different types of geological conditions and construction environment. Whether in soft soil layer or rock stratum, pipe joint anchor can play a good supporting effect to ensure the smooth progress of the project.

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