What kind of rotary drilling rig is good? Firstly, let’s take a look at the advantages of rotary drilling rig construction.
Advantages of rotary drilling rig construction:
1. The entire rig was placed on an automatically walking urban belt chassis. Strong mobility, fast displacement. Strong independence, construction and transportation without lifting. It is adapted to harsh terrain, and all lifting operations can be handled by local lifting equipment.
2. The walking and movement of the rig are completed by the output power of the diesel engine, which does not need to provide high power power on site, and saves a lot of power distribution and capacity.
3. High pore-forming perpendicularity. The drilling rig chassis is retractable and automatically leveled. The instrument shows the verticality of the drilling rig and the drilling depth. The drilling is very stable, which can ensure the verticality of the drilling hole and improve the drilling quality.
4. The hole-forming speed is fast. The drill rod of the rotary digging drill is connected with the drill bit, which raises and rapidly rotates the soil under the pressure of the oil cylinder, which greatly improves the drilling efficiency. The well-forming time is generally 3-5 h / well. But in the construction, the relevant supporting work should be fully considered. Such as steel cage placement, underwater concrete pouring, etc. If the supporting work is not in place, it will not be able to give full play to the advantages of rapid drilling of the rotary drilling machine.
5. Strong geological adaptability. The connection between the bit and the drill pipe is fixed by steel pin, and the bit is easy to remove. The bit can be replaced quickly for different strata. There are three main types of drills, namely short screw drill bit and sand digging drill bit.
6. It can improve the bearing capacity of the cast-in-place pile. In the process of hole formation, the rotary drilling rig only needs the static pressure mud to protect the wall, and the mud used will not form a thick mud skin on the hole wall.in addition. The drill bit moves up and down for many times, making the hole wall rough and improving the side friction resistance of the pile. In addition, rotating the drill bit can form a flat bottom hole, which is conducive to the pile end resistance play.
7. It is conducive to environmental protection. During the construction process, the rotary digging drill has low noise, low vibration and less mud consumption. This machine only uses mud wall protection, do not need mud slag discharge. Therefore, the drilling fluid flow is small, which can be stacked in a concentration or transported out by dump truck.
Then choose which rotary drilling rig according to your actual working conditions.
Use of small rotary drilling rig:
1. Slope protection piles of various buildings;
2. Part of the load-bearing structure pile of the building;
3. Various piles with a diameter of less than 1m in urban reconstruction and municipal projects;
4. Piles suitable for other uses.
The market workload coverage rate of the small computer is more than 30%.
Market positioning of medium-sized rotary drilling rig:
1.Bridge piles of expressways, railways and other transportation facilities and Bridges;
2.Weight-bearing structure piles of large buildings and port docks;
3.Urban viaduct bridge pile;
4.Other applicable piles.
The workload coverage rate of medium machine market reached more than 60%.
Scope of application for a large rotary drilling rig:
1.Very large bridge piles of various expressways and railway Bridges;
2.Special structure load-bearing foundation pile of other large buildings.
Large rotary drilling rig market accounts for more than 10% of the workload.
Gookma Technology Industry Company Limited is a hi-tech enterprise and a leading manufacturer of rotary drilling rig, concrete mixer and concrete pump in China. You are welcome to contact Gookma for further inquiry!
Post time: Jan-07-2024
