What is it about?
The identification of rock characteristics based on drilling parameters is widely used in mining engineering, tunnel engineering, geotechnical engineering, etc. In this paper, we developed a drilling experimental device and comprehensively analyzed the relationship between eight drilling indexes such as penetration rate, rotation speed, torque, etc., and six typical mechanical parameters such as uniaxial compressive strength, tensile strength, cohesion, etc.
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Why is it important?
The detection of rock formation characteristics while drilling has the advantages of low cost and fast speed, which is an important direction of intelligent development of rock formation characteristics detection. Four significant findings are that: a) the drilling process can be divided into an initial stage and a stable stage; b) rotation speed and torque are not ideal for predicting rock physical and mechanical properties; c) during drilling these boreholes, the torque work ratio accounts for more than 99%, which increases with the increases of rock strength; d) the penetration rate is the best choice for the estimation of rock mechanical parameters.
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This page is a summary of: An experimental investigation into the borehole drilling and strata characteristics, PLoS ONE, July 2021, PLOS,
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