#𝐫𝐨𝐫𝐚𝐫𝐲 𝐝𝐫𝐢𝐥𝐥𝐢𝐧𝐠 ..#𝐩𝐢𝐥𝐞 𝐝𝐫𝐢𝐥𝐥𝐢𝐧𝐠...#𝐛𝐨𝐫𝐞𝐝 𝐝𝐫𝐢𝐥𝐥𝐢𝐧𝐠
Basically, the bored pile drilling machine has 3 types as follows:
Bored pile drilling machine (twisted way): when drilling into the ground, the drilling blades work like wood or steel drill bits, push land up through twisted wings. There is also a drill for chicken intestines consisting of multiple drills, a cage cage that is twisted together and lined up in a row (3 bits), used to drill to form barrette piles and a diaphragm wall to reinforce the foundation (the diaphragm wall created with this device has the form of row of circular cross-sections planted overlapping and successive). The bored piles are suitable for drilling many different types of bored piles, of which the most typical are four types:
-Bored piles are piles constructed by different drilling methods (bucket drilling, backwashing drilling, … ).
-The bottom expansion bored pile is a type of bored pile with the diameter of the bottom of the pile larger than the diameter of the pile body.
-Barrette piles have a non-circular cross-section with many different cross-sections, this is one of the commonly used bored piles in Vietnam.
-Bored piles with washing erosion and bottom reinforced cement mortar pump are bored piles that apply bottom wash technology and bottom reinforced cement mortar pump. These are the development steps in bored pile construction technology.
Bored pile drilling machine (bucket type): when working, the bucket rotates according to the drill rod, cuts the soil, filled the digging bin, then the soil in the digging bin is brought up with the digging bin by drawing the lever drill up.
Reverse circulation pump bored pile drilling machine: the ship’s propeller blade (ie the propeller type) drills into the soil by attaching to the head of the drill, which is the pump pipes, which rotate. After the soil has been reduced to drilled humus, it is pumped with a large capacity pump, pumped onto the ground with the solution kept on the wall of the hole through the drilling line.
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