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Factors Affecting Selection of Rotary Digger Bit
Release time:
2018-10-30
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The rotary drill bit is the main component of the rotary drilling rig, which determines the thickness of the rotary digging bottom layer. At the same time, the construction requirements are different, which will eventually affect the progress of the construction, so it is very important to choose the drill bit of the rotary excavator. Let's look at the factors that affect the rotary drill bit. Geology is diverse, which determines the type of rotary drill bit. In the pebble drilling special drilling pebble rotary drill bit, so according to your drilling geology to distinguish. Helps you complete construction tasks quickly. Another point is that different rotary drilling rigs have different rotary drilling bits installed, which is also one of the influencing elements. Like surface soil, muddy sub-clay, clay layer in dry state
Geology is diverse, which determines the type of rotary drill bit. In the pebble drilling special drilling pebble rotary drill bit, so according to your drilling geology to distinguish. Helps you complete construction tasks quickly. Another point is that different rotary drilling rigs have different rotary drilling bits installed, which is also one of the influencing elements.
Such as surface soil, silt clay, clay layer in the dry state are better cementation. Under dry hole drilling, single bottom soil layer drilling bucket can be used for drilling, and double bottom sand fishing bucket and soil layer spiral drill bit can also be used for drilling. If under the condition of wet hole drilling, the cementation performance of soil in water is poor, generally use double-bottom sand fishing bucket to drill in order to fish out the drilling slag.
The silt layer is generally drilled with a double-bottom sand bucket. The cementation performance of sand layer and sand layer is relatively poor. No matter dry hole drilling or wet hole drilling, double-bottom sand fishing bucket shall be used for drilling. For water-rich stratum such as flowing sand and flowing mud, which are easy to collapse, double-bottom sand-fishing bucket shall be used for drilling. Hard strata such as pebble, gravel, weathered bedrock, sand pebble, marl, sandstone, limestone, mudstone, shale and other hard strata cannot complete the drilling design by rubbing drill pipe and rotary bit due to the high density of stratum distribution. This kind of rock formation should use machine lock rod and screw bit.
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