Equipment and method for precise guidance and docking of ground holes in coal mine areas and targets in underground roadways

Abstract

The invention relates to an equipment and method for precisely guiding and docking the ground hole in the coal mine area and the target point in the underground roadway, including a guiding measurement probe, a cable wire rope, a winch, a signal cable, a signal processor at the hole, a strong magnetic short joint, and a connecting rod , Rotary feed mechanism and guide rail, when guiding and docking, the surface hole is divided into casing hole section, directional hole section, deflection correction hole section and docking hole section, and the directional hole section drilling is carried out by using the conventional inclination-while-drilling directional drilling tool assembly to ensure that the drilling trajectory extends according to the design; then use the guide docking equipment to measure the relative position parameters between the surface hole and the target point in the coal mine underground roadway, and correct the inclinometer data while drilling; The directional drilling tool assembly is used for deflection-correcting drilling; finally, mud compound drilling or air reverse circulation percussion drilling is used to achieve butt and target. The invention can be used in the construction of butt joint projects such as rescue drilling, cable holes and ventilation holes in coal mine areas. Small positioning error, high target rate and other advantages.

Description

technical field [0001] The invention relates to the technical field of coal mine application, in particular to equipment and a method for precisely guiding and docking a surface hole in a coal mine area and a target point in an underground roadway. Background technique [0002] With the development of the coal mine industry, there are many new engineering needs, such as the construction needs of rescue drilling, cable holes and ventilation holes in the coal mine area. Drilling at the target point requires accurate targeting. [0003] At present, the drilling technology combining directional drilling with screw motor and real-time trajectory measurement of measurement while drilling is mainly used, supplemented by single and multi-point instrument for trajectory rechecking to ensure that the drilling target is hit. However, since the calculation of the spatial position parameters of each measuring point in the measurement-while-drilling system needs to use the corresponding ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a surface hole in a coal mining area with a small positioning error and a high target rate for the lack of high docking accuracy of the existing conventional measurement-while-drilling directional drilling and the need for accurate target targeting in new projects. Point precise guidance docking equipment and method

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