Study of calibration system of borehole opening parameters based on ultrasonic principle
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摘要: 针对传统的人工丈量方法标定开孔方位角和倾斜角存在操作程序繁琐、稳钻时间长、精度低等问题，设计了基于超声波原理的钻孔开孔参数标定系统。该系统采用超声波渡越时间检测法测量参考点之间的距离，并由单片机解算出钻杆的方位角，选用微机械三轴加速度计测量倾斜角，实现了全自动化的实时跟踪测量及智能化的钻机姿态调整语音指导操作；在误差允许范围内，可快速标定所需开孔参数。该系统提高了开孔参数标定精度、标定效率及煤矿管理水平，降低了矿工劳动强度和煤矿管理成本。Abstract: In view of problems of tedious operation procedures, needing long time for steady drilling, low accuracy of traditional manual measurement method for calibration of borehole opening azimuth and tilt angles, a calibration system of borehole opening parameters based on ultrasonic principle was designed. The system uses ultrasonic transit time detection method to measure distance between reference points, calculates azimuth angle by single-chip, and selects micro-mechanical triaxial accelerometer to measure tilt angle, which achieves fully automated, real-time tracking and measuring and intelligent voice guidance for rig attitude adjustment. It realizes fast calibration for necessary borehole opening parameters within tolerance limits. The system improves accuracy and efficiency of calibration of borehole opening parameters, as well as mine management level, while reduces labor intensity and mine management cost.
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