Drilling tool, drilling rig and drilling method

Abstract

The invention relates to the technical field of construction machinery, and discloses a drilling tool, a drilling machine and a drilling method. The drilling tool is used for drilling annular grooves. The drilling tool includes a drill barrel and at least one set of drill bits, and each set of The drill bits each include a first drill bit and a second drill bit, the first drill bit and the second drill bit are symmetrically arranged at the end of the drill tube with the center of the drill tube end face as the center, and the first drill bit The drill bit is deflected toward and protrudes from the inner wall of the drill cylinder, the second drill bit is deflected toward and protrudes from the outer wall of the drill cylinder, and the drill tool is provided with the drilling tool. Adopting the drilling tool, the drilling rig and the drilling method for tunnel excavation has the technical effects of fast excavation, high efficiency, simple equipment, low equipment cost and little environmental pollution.

Description

technical field [0001] The present invention relates to the technical field of engineering machinery, in particular to a drilling tool used for a drilling rig, and also relates to a drilling rig comprising the above-mentioned drilling tool and a drilling method using the above-mentioned drilling rig. Background technique [0002] In recent years, with the rapid development of infrastructure construction such as highways, high-speed railways and urban subways in my country, more and more projects need to dig tunnels, and corresponding tunnel excavation machinery has been more and more widely used. [0003] Excavation machines such as shield machines are mostly used in current engineering tunnels for excavation or blasting by blasting. [0004] The basic working principle of the shield machine is that a cylindrical steel component is pushed forward along the tunnel axis to excavate the soil, etc. The excavation plane is the entire tunnel area. The overall structure of the shie...

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Problems solved by technology

[0004] The basic working principle of the shield machine is that a cylindrical steel component is pushed forward along the tunnel axis to excavate the soil, etc. The excavation plane is the entire tunnel area. The overall structure of the shield machine is very large, and the equipment is very expensive. General engineering is difficult and easy to deal with. Other types of excavation machines generally perform rotary drilling directly in the area to be excavated. The excavation plane is also the entire tunnel area, or just divide the entire tunnel area into two parts for excavation. It is necessary to excavate the entire plane, the loss of drilling tools or cutting tools is large, and the excavation efficiency is not high, and the investment in equipment is large; while the excavation of tunnels by blasting method has large vibration, pollutes the environment, is not easy to control, and has certain dangerous

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