A Spline Type Horizontal Directional Drilling Engineering Geological Exploration Control Device

Abstract

The spline-type horizontal directional drilling engineering geological survey control device provided by the present invention combines coring and fishing parts with eccentric guiding parts, and uses inner and outer eccentric ring control motors to control the inner and outer eccentric rings for different combinations to obtain different eccentric distances. The spline is used as a joint point to make a certain degree of bending within the elastic variation range from one end of the core outer tube to the spline part, thereby realizing the directional deflection of the core bit, and then measuring the probe to explore the surrounding geological conditions, and then according to the exploration situation , Carry out another directional build-up, and achieve precise control of the drilling axis through multiple build-ups. At the same time, the coring and salvage components can be used for coring and salvage at any time, truly reflecting the geological conditions along the underground line. If it is applied to the engineering geological survey of ultra-long-distance and deep-buried tunnels, the equipment can be arranged at the entrance and exit of the tunnel, thus avoiding the relocation of equipment in complex terrain conditions and greatly reducing the drilling work of traditional engineering geological surveys quantity.

Description

technical field [0001] The invention relates to a spline type horizontal directional drilling engineering geological prospecting control device, which belongs to the field of engineering geological prospecting equipment. Background technique [0002] In geotechnical engineering geological survey, engineering geological survey methods mainly include drilling, well exploration, channel survey, cavern survey, aeronautical engineering geological survey and mapping, etc. Among them, geological drilling is the main method of geotechnical engineering survey. For some deep buried and long-distance underground projects (such as tunnel engineering, etc.), the traditional vertical hole geological drilling device is composed of a drilling tool assembly and a coring and salvage assembly. The drilling tool assembly passes through the upper covering layer and reaches the tunnel axis. In the stratum, the coring points are arranged at intervals along the tunnel axis, and then the cores are d...

AI Technical Summary

Problems solved by technology

For some deep buried and long-distance underground projects (such as tunnel engineering, etc.), the traditional vertical hole geological drilling device is composed of a drilling tool assembly and a coring and salvage assembly. The drilling tool assembly passes through the upper covering layer and reaches the tunnel axis. In the stratum, the coring points are arranged at intervals along the axis of the tunnel, and then cores are drilled at the coring points through the core drilling tool, and then the geological section along the line is estimated by the connection method, because this device can only obtain Therefore, the device cannot truly and comprehensively reflect the geological characteristics of the surrounding rock of the tunnel, and special occasions such as sea level, densely populated areas on the surface, and dip-slip areas are complicated. When using vertical holes to explore geological conditions , it is more difficult to implement

Moreover, although the current horizontal directional drilling technology can accurately steer and control the direction, it does not have a coring and salvage assembly, so it is impossible to obtain the core

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