1. Determine the hole position of the bolt according to the design requirements, and use the drilling machine to hit.

2. Use the pressure wind to blow out the rock powder in the hole.

3. The rod body is fitted with an anchor plate, and the impact rod is used to drive the anchor rod into the hole.

Recommended calculation method drilling hole aperture of friction bolt:

In the rock formation: bore diameter = (0.9-0.95) × anchor diameter.

Bolt drilling depth: bolt length + 100mm borehole slope ＜1%.

In the coal seam: bore diameter = (0.9-1.00) × anchor diameter.

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Tel:+86-182 3676 6038 (Whatsapp)
E-mail: zxminesupport@zxsteelgroup.com