Eccentric ring type horizontal directional coring drilling tool and direction control device thereof

Abstract

The invention provides an eccentric ring type horizontal directional coring drilling tool direction control device. The eccentric ring type horizontal directional coring drilling tool direction control device comprises a rock core outer pipe and a rock core inner pipe, the rock core inner pipe is arranged in the rock core outer pipe, an eccentric mechanism is arranged on the outer wall of the rockcore outer pipe, and the eccentric mechanism comprises an inner eccentric ring, an outer eccentric ring and a control motor. The invention further provides an eccentric ring type horizontal directional coring drilling tool provided with the direction control device. The eccentric ring type horizontal directional coring drilling tool comprises a shell, a shell clamping and fixing device, an outerpipe assembly and an inner pipe assembly, wherein the outer pipe assembly and the inner pipe assembly are arranged in the shell, and the inner pipe assembly is sequentially provided with a rope fishing device, an elastic clamping mechanism, a single-action mechanism, a directional measuring device and the core inner pipe from left to right. The direction control device provided by the invention can realize guide control on the coring drilling tool, so that the axial trace of the coring drilling tool is accurately controlled; and the coring drilling tool provided by the invention can be combined with a horizontal directional drilling machine to carry out continuous coring on various deflecting sections and horizontal sections.

Description

technical field [0001] The invention relates to an eccentric ring type horizontal directional core drilling tool and a steering device thereof, belonging to the technical field of geotechnical engineering investigation. Background technique [0002] Engineering drilling is a commonly used geological exploration method at present. It is a method used to further ascertain underground hidden geological phenomena and understand the spatial variation rules of geological phenomena after a preliminary understanding of the basic ground conditions through engineering geological surveying and mapping. Engineering drilling is also a method of exploration for the purpose of exploring mineral deposits, stratum structures, soil properties, etc., using a drilling rig to drill holes underground to take out soil or cores for analysis and research. The main purpose is to obtain cores and soil samples from the drill holes for physical properties Analyze to determine whether the foundation meet...

AI Technical Summary

Problems solved by technology

Although the traditional wireline core drilling tool can continuously take cores, it can only perform vertical hole coring drilling. Although the traditional directional drilling technology can accurately control the drilling axis through deflection, it cannot obtain cores.

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