Spiral percussion drill suitable for rock and soil and construction method

Abstract

The invention provides a spiral percussion drill suitable for rock and soil and a construction method. The drill comprises a rock drilling component, a soil drilling component, a gear, a drill rod anda drill bit; the rock drilling component comprises a cylinder, wherein an air pipe is arranged at the top of the cylinder, a hole is formed in the bottom of the cylinder, a piston is arranged in thecylinder, the top of the piston and turbine blades are fixedly connected, and the bottom of the piston is fixedly connected with a force transmission component; the soil drilling part comprises a motor, and the motor is arranged in the force transmission component; the interior of the gear is in nested connection with the drill rod, the exterior of the gear meshes with the bottom face of the forcetransmission component and the motor, and the bottom of the gear is fixedly connected with the drill rod through a stress component; and the drill bit comprises a spiral drill bit and a high-strengthrock drill bit. According to the spiral percussion drill suitable for rock and soil and the construction method, the problem that drilling equipment cannot be suitable for different soil layers can be solved, and the drill and the method can adapt to different stratum conditions since the drilling angle can be accurately controlled and high maneuverability is achieved; moreover, the method is environmentally-friendly and can save energy and reduce noise; and in addition, the drill bit is firm and reliable, and therefore the method is suitable for slope and foundation pit supporting engineering.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering, and in particular relates to a helical percussion drilling machine suitable for rock and soil and a construction method. Background technique [0002] Bolt support is a common form of support in the field of geotechnical engineering. Usually, the soil layer is drilled with an auger drill, and the rock layer is drilled with percussion down-the-hole drilling. In actual engineering, complex formations with both soil and rock formations are often encountered. The conventional solution to such problems is to replace drilling equipment. However, there are following problems in this type of solution: (1) the replacement, transportation, assembly, and check of machine tool equipment take a lot of time and increase the construction period. (2) Replacement of different drilling equipment according to different formation conditions will increase the engineering cost virtually. (3) The rep...

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Problems solved by technology

But, there are following problems in this type of solution: (1) the replacement, transportation, assembly, checking of machine tool equipment spend a lot of time, increase the construction period

(2) Replacing different drilling equipment according to different formation conditions will increase the engineering cost virtually

(3) The replacement and displacement of the machine tool may easily cause hole position deviation and drilling inclination

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