Version 1
: Received: 29 July 2018 / Approved: 30 July 2018 / Online: 30 July 2018 (09:07:18 CEST)
How to cite:
Sanmiquel, L.; Bascompta, M.; Rossell, J. M. Assessment of the Errors in the Transmission of the Orientation and Cartographic System from the Surface to an Underground Mine. Preprints2018, 2018070569. https://doi.org/10.20944/preprints201807.0569.v1
Sanmiquel, L.; Bascompta, M.; Rossell, J. M. Assessment of the Errors in the Transmission of the Orientation and Cartographic System from the Surface to an Underground Mine. Preprints 2018, 2018070569. https://doi.org/10.20944/preprints201807.0569.v1
Sanmiquel, L.; Bascompta, M.; Rossell, J. M. Assessment of the Errors in the Transmission of the Orientation and Cartographic System from the Surface to an Underground Mine. Preprints2018, 2018070569. https://doi.org/10.20944/preprints201807.0569.v1
APA Style
Sanmiquel, L., Bascompta, M., & Rossell, J. M. (2018). Assessment of the Errors in the Transmission of the Orientation and Cartographic System from the Surface to an Underground Mine. Preprints. https://doi.org/10.20944/preprints201807.0569.v1
Chicago/Turabian Style
Sanmiquel, L., Marc Bascompta and Josep M. Rossell. 2018 "Assessment of the Errors in the Transmission of the Orientation and Cartographic System from the Surface to an Underground Mine" Preprints. https://doi.org/10.20944/preprints201807.0569.v1
Abstract
A proper transmission of the orientation between surface and underground workings, by means of vertical shafts, is an important challenge in the mining industry, especially when the mine exceeds 200 meters deep. In fact, this study is developed in a mine located to 700 meters deep. Likewise, this paper assesses the accuracy of this operation, in a case study, using the two shafts plumbing and gyroscope methods in order to compare and analyse the planimetric displacement of the base line due to different source of errors in each one. Upsides and downsides of both methods are analysed in the paper. Some disadvantages in each method have been reduced thanks to the technological progress, especially in the two shaft plumbing method. The different sources of error that affect the measures are thoroughly analysed in the study with the aim to compensate them and achieve the required precision for an underground infrastructure. Mine ventilation has been found as one of the most important sources of error in the plumbing method due to intake and return airflow. In this direction, the paper unfolds some measures to reduce the ventilation influence and details a compensation method to reduce ventilation errors.
Keywords
shaft plumbing; ventilation; plumb oscillation; gravity force and earth rotation
Subject
Engineering, Civil Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.