Drilling anti-deviation device for geotechnical engineering investigation

Abstract

The invention relates to the technical field of geotechnical engineering, and particularly discloses a drilling anti-deviation device for geotechnical engineering investigation, which comprises a fixed pipeline, a shell is rotatably arranged in the fixed pipeline, and a drill bit is arranged in the shell; an anti-deviation mechanism is further arranged in the shell and used for correcting the motion trail of the drill bit, and the anti-deviation mechanism comprises a deviation correcting assembly, a transmission assembly and a driving assembly. The deviation rectifying assembly comprises a sliding groove formed in the shell, an inner threaded pipe is arranged in the sliding groove in a sliding mode, a push plate is arranged on the inner threaded pipe, and a screw in threaded connection with the inner threaded pipe is rotationally arranged in the shell. According to the drilling anti-deviation device for geotechnical engineering investigation, in the drilling process of a drill bit, the drill bit is impacted by the three push plates in a reciprocating mode to push the drill bit to the center point, continuous deviation correction can be conducted on the drill bit, and therefore the drill bit is prevented from deviating from a preset track in the drilling process, and the drilling quality of the drill bit is improved. The exploration effect is influenced.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a drilling deviation prevention device for geotechnical engineering investigation. Background technique [0002] All kinds of engineering on the ground, underground and water are collectively referred to as civil engineering, and the part of civil engineering involving rock, soil, underground and water is called geotechnical engineering. Geotechnical engineering is a new technical system established in civil engineering practice in the 1960s to solve rock mass and soil engineering problems, including foundation and foundation, slope and underground engineering, as its own research object. [0003] Before the development of geotechnical engineering, it is necessary to carry out detailed investigation and investigation on the geological conditions of the construction object. During this process, drilling equipment is required to drill and sample the rock and soil ...

AI Technical Summary

Problems solved by technology

[0007] The invention provides a drilling anti-deviation device for geotechnical engineering investigation, which has the beneficial effect of continuously correcting the drill bit to ensure that the drilling direction is consistent with the predetermined trajectory, and solves the problems mentioned in the background technology above. The hardness of the layer is high and the internal structure is complex. The drill bit will be offset by the complex stress during the exploration process, and the accumulation of offset will eventually cause the drilling direction to deviate far from the predetermined trajectory, which will affect the exploration effect.

Images