First, the application is different.
1. rotary drilling rig: it is used for drilling rock stratum with rock hardness coefficient f≤6 in open-pit mines, and can also drill hard interlayer rock with f=7- 1 1. When drilling, the rotary torque and axial pressure are applied to make the drill bit rotate and feed to cut rocks.
2. Rotary drilling rig: construction machinery suitable for hole-forming operation of building foundation engineering. It is mainly suitable for the construction of sandy soil, cohesive soil, silt and other soil layers, and is widely used in the construction of various foundations such as cast-in-place piles, underground continuous walls and foundation reinforcement.
Second, the characteristics are different.
1. rotary drilling rig: it is used for drilling rock stratum with rock hardness coefficient f≤6 in open-pit mines, and can also drill hard interlayer rock with f=7- 1 1. When drilling, the rotary torque and axial pressure are applied to make the drill bit rotate and feed to cut rocks.
2. Rotary drilling rig: hydraulic crawler telescopic chassis, jack-up collapsible mast, telescopic drill pipe, automatic verticality detection and adjustment, digital display of hole depth, etc. The whole machine generally adopts hydraulic pilot control and load sensing operation, which has the characteristics of light and comfortable operation. The main hoist and the auxiliary hoist can meet the needs of various situations in the construction site.
Third, development is different.
1. rotary drilling rig: in the construction of large-diameter cast-in-place piles such as high-rise buildings, ports, dams and bridge foundation projects, rotary drilling rig has the advantages of convenient operation, safety, reliability, strong adaptability, low use cost, high hole-forming efficiency and good hole wall stability. Through reasonable construction organization and management, the construction of cast-in-place piles can be better promoted.
2. Rotary drilling rig: it has obvious advantages and strong applicability when used in bored pile construction of subway engineering; High degree of automation and low labor intensity; High drilling efficiency; The pile quality is good; Environmental pollution is small. It can significantly improve the efficiency and quality of engineering construction. When the construction method and technology are selected reasonably, material, financial and human resources can be saved to the maximum extent.
Baidu encyclopedia-rotary drilling rig
Baidu encyclopedia-rotary drilling rig