Gong Jian
Abstract
The paper analyzed the cause of the declination in a raise boring. The paper provided the measures to prevent and reduce the declination occurred in pilot hole drilling of a raise. Also the paper introduced the controlled boring declination method and declination correcting method.
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The paper analyzed the cause of the declination in a raise boring. The paper provided the measures to prevent and reduce the declination occurred in pilot hole drilling of a raise. Also the paper introduced the controlled boring declination method and declination correcting method.
Key concepts: Declination, Drilling, Geology, Control (management), Mining engineering, Engineering, Petroleum engineering, Marine engineering