A novel borehole surveying system for underground mining: Design and performance assessment
نویسندگان
چکیده
At present there is a lack of an instrument to measure the trajectory up-holes in safe and efficient way with minor disruption underground production. To overcome this, mechanically operated probe equipped Inertial Measurement Units (IMU) centralisers integrated explosive charge-up unit, which allows operator start stop measurements from area, while he views records real time handheld PC. The system incorporates real-time quality indicator based 95% confidence standard deviational ellipse (SDE) toe’s positions that clearly indicates whether survey should be repeated before moving next blasthole ensure limited uncertainty. In-field data shows accuracy repeatability between below 1.3 cm/m, ensures detecting drilling errors production rings, often amount several tens centimetres, may compromise blast results.
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ژورنال
عنوان ژورنال: Measurement
سال: 2022
ISSN: ['1873-412X', '0263-2241']
DOI: https://doi.org/10.1016/j.measurement.2022.111021