ما هي مزايا استخدام دوامة الحفر في البناء

1) The entire drilling rig is placed on an automatic walking urban belt chassis. It has high fluidity and rapid displacement. High independent operation rate, no need for lifting during construction and transportation. Capable of adapting to harsh terrain, all lifting operations can be handled by local lifting equipment.

2) The operation and movement of the drilling rig are completed by the output power of its own diesel engine. It does not require on-site high-power power supply, saving a lot of distribution and capacity expansion costs.

3) The verticality of the borehole is high. The chassis of the drilling rig can automatically retract and level. The verticality of the drilling tower and the depth of the borehole can be displayed by instruments. Therefore, the drilling process is very benign, which can effectively ensure the verticality of the drilling and improve the quality of the drilling.

4) The pore forming speed is fast. The drill rod of the rotary drilling rig is connected to the drill bit through tension. Under the pressure of the oil cylinder, the drilling efficiency is greatly improved by lifting and rapidly rotating the soil. The average pore formation time is 315 hours per pore. However, during construction, relevant support work should be fully considered. Such as steel cage pouring, underwater concrete pouring, etc. If the supporting work is not in place, the advantage of fast drilling of rotary drilling rigs cannot be fully utilized.

5) Strong geological adaptability. The connection between the drill bit and the drill rod is fixed by steel pins. The drill bit is easy to disassemble and can be quickly replaced for different geological formations. There are three main types of drilling rigs, namely short spiral drilling rig, dredging drilling rig, and sand drilling rig.

6) It can improve the bearing capacity of cast-in-place piles. During the drilling process of a rotary drilling rig, only static mud is needed to protect the wellbore. The mud used will not form a thick mud skin on the hole wall. In addition. The drill bit was drilled up and down multiple times, making the hole wall rough and increasing the lateral friction resistance of the pile. In addition, rotating the drill bit can form a flat bottomed borehole, which is conducive to the exertion of pile end resistance.

7) Beneficial for environmental protection. During the construction of rotary drilling rig, the sound is low, the vibration is small, and the amount of mud is small. The machine only uses mud to protect the walls and does not use mud to discharge slag. Therefore, drilling fluid has low fluidity and can be centrally stacked or transported by dump trucks.