What types of core barrels are there?
2020-12-29
Generally, the instrument manufacturer does this. There is no specific height requirement, but the water-stable layer must be taken through. Generally, the thickness of the water-stable layer does not exceed 50cm, which is completely enough.
No power supply is required, the drilling rig and sampling dimensions are accurate, the surface is smooth after drilling, and no accidental damage to the drilled material occurs.
It adopts double-column structure and spiral feed mode, which has good stability, simple operation and labor-saving. Equipped with traveling wheels, it is easy to move. It adopts high-speed cutting technology and thin-walled diamond drill bits to drill and cut high-strength reinforced concrete. It has high drilling efficiency, accurate hole positions, smooth hole walls, good hole quality, and complete and smooth core samples. The vibration is small and there is no damage to the building.
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