Precise guide butt joint equipment for coal field ground hole and target points in underground roadway and precise guide butt joint method for coal field ground hole and target points in underground roadway
A technology for underground tunnels and surface equipment, which is applied in directional drilling, earthmoving, wellbore/well components, etc., can solve the problems of small positioning error, low docking accuracy, and high target hit rate, and achieves small positioning error and operation. Convenience and high hit rate
Active Publication Date: 2015-11-18
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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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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[0035] see figure 1 , which shows the precise guidance and docking equipment of the present invention for the ground hole in the coal mine area and the target point in the underground roadway.
[0036] The precise guidance and docking equipment for the ground hole in the coal mine area and the target point in the underground roadway at least includes ground equipment and underground equipment. The ground equipment includes at least a guiding measurement probe 3 and a hole signal processor 7. Section 8, connecting rod 9, rotary feed mechanism 10 and guide rail 11.
[0037] Wherein, the guide measuring probe 3 can be cylindrical, and contains an alternating magnetic field sensor with a detection range ≥ 40m to detect the alternating magnetic field parameters of the strong magnetic short joint 8. The guide measuring probe 3 It also contains an acceleration sensor and a fluxgate sensor to detect the position state parameters of the guiding measuring probe 3, and the guiding measu...
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The invention relates to precise guide butt joint equipment for a coal field ground hole and target points in an underground roadway and a precise guide butt joint method for the coal field ground hole and the target points in the underground roadway. The equipment comprises a guide measuring detection pipe, a through cable steel wire rope, a winch, a signal cable, a hole opening signal processor, a strong magnetic short section, a connecting rod, a rotating feeding mechanism and a guide rail. During the guide butt joint, the ground hole is divided into a sleeve hole section, a directional hole section, an inclination correcting hole section and a butt joint hole section; a conventional while drilling inclination measuring directional drill tool combination is used for directional hole section drilling, and the drill hole track is ensured to extend according to the design; then, the guide butt joint equipment is used for measuring the relative position parameters between the ground hole and the target points in the coal mine underground roadway; the while drilling inclination measuring data is corrected; the while drilling inclination measuring directional drill tool combination is fed for inclination correction drilling; finally, slurry composite drilling or air reverse circulation impact drilling is used to realize the butt joint target hitting. The precise guide butt joint equipment and the precise guide butt joint method can be used for butt joint engineering construction of coal mine rescue drill holes, cable holes, ventilation holes and the like, and have the advantages of small positioning error, high target hitting rate and the like.
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 ...
Claims
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Login to View More IPC IPC(8): E21B47/0228E21B47/12E21B7/04
Inventor 石智军李泉新方俊赵江鹏史海岐祁宏军黄巍
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP