水平定向对接穿越导向系统设计

Design for the guidance system of horizontal directional intersection

水平定向对接穿越技术有效地解决了传统水平定向钻进无法进行长距离穿越,以及含砾石等复杂地层穿越的问题。在已有水平定向钻进工艺的基础上,实现对接穿越的关键在于成功进行导向孔对接。描述了一种水平定向对接穿越导向系统,系统采用三轴加速度计和磁阻传感器作为姿态敏感器件,以轴向磁铁产生的磁场作为对接磁源,介绍了系统的工作原理,以及系统的结构和功能。此系统具有体积小、成本低、精度和可靠性高等一系列优点,适用于水平定向对接穿越的导向。

The horizontal directional intersection （HDI） technology effectively solves the problems that the long-distance crossing and the gravel stratum crossing can＇t be realized by the traditional horizontal directional drilling （HDD） technology. Based on HDD, the key of HDI realization is the intersection of guide holes. A guidance system of HDI is described, which applies three mutual orthogo- nal accelerometers and magnetometers as its attitude sensing units, and the magnetic field of an axial magnet as the magnetic source of the intersection. The operating principle is introduced, and system structures and functions are introduced as well. The system has the advantages of small size, low cost, high precision and reliability, and it is suitable for guidance of HDI.