Inclined drilling construction method

Abstract

The invention discloses an inclined drilling construction method. The inclined drilling construction method comprises the steps that 1, point fixing work of all roadways involved in the construction process is completed; 2, if the coordinate system of the roadway where the inclined drilling initial position is located and the coordinate system of the roadway where the final position are not the same coordinate system, the fixed error between the two coordinate systems is measured, and the coordinate systems of the initial position and the final position of inclined drilling are unified; and 3,drilling parameters are adjusted according to the drilling track deviation caused by the dead weight of a drill bit, and then drilling is started. According to the inclined drilling construction method, the angle of a drilling machine is corrected through the parabolic path formula of the drill bit during inclined drilling, and it is guaranteed that inclined drilling construction is in place andaccurate; meanwhile, on-site point fixing is fast completed with the help of a gyroscope, a traditional single-well directional point guiding manner is replaced, unification of the coordinate systemsis further achieved through repetition measurement, and the inherent error is eliminated.

Description

technical field [0001] The invention relates to a method for constructing inclined boreholes. Background technique [0002] In the process of mine reconstruction and construction, it is often necessary to construct new shafts, especially inclined shafts, on the basis of existing roadways and mines to meet production needs. During the construction process, the following problems will be encountered: (1) Inclined drilling is non-vertical drilling construction. Due to the weight of the drill bit, its trajectory will be offset, and the construction will not be accurate, which will easily affect other roadways or transportation systems, and even (2) Due to historical reasons, there are many coordinate systems for underground roadways, and there are often cases where different coordinate systems are used for different roadways. The fixed error between the holes is not precise and clear, and the coordinate system of the starting position and the end position of the drilling cannot...

AI Technical Summary

Problems solved by technology

During the construction process, the following problems will be encountered: (1) Inclined drilling is non-vertical drilling construction. Due to the weight of the drill bit, its trajectory will be offset, and the construction will not be accurate, which will easily affect other roadways or transportation systems, and even (2) Due to historical reasons, there are many coordinate systems for underground roadways, and there are often cases where different coordinate systems are used for different roadways. The fixed error between the holes is not precise and clear, and the coordinate system of the starting position and the end position of the drilling cannot be clearly unified, which creates obstacles to the construction; (3) also due to historical reasons, only one control point is required for the roadway, and there is no backsight direction , cannot achieve accurate fixed point

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