Version 1
: Received: 1 June 2023 / Approved: 2 June 2023 / Online: 2 June 2023 (05:46:28 CEST)
How to cite:
Niu, X.; HOU, K.; Sun, H. Study on Effect of Drawing Shear Factor on Underground Debris Flow in Natural Caving Method. Preprints2023, 2023060118. https://doi.org/10.20944/preprints202306.0118.v1
Niu, X.; HOU, K.; Sun, H. Study on Effect of Drawing Shear Factor on Underground Debris Flow in Natural Caving Method. Preprints 2023, 2023060118. https://doi.org/10.20944/preprints202306.0118.v1
Niu, X.; HOU, K.; Sun, H. Study on Effect of Drawing Shear Factor on Underground Debris Flow in Natural Caving Method. Preprints2023, 2023060118. https://doi.org/10.20944/preprints202306.0118.v1
APA Style
Niu, X., HOU, K., & Sun, H. (2023). Study on Effect of Drawing Shear Factor on Underground Debris Flow in Natural Caving Method. Preprints. https://doi.org/10.20944/preprints202306.0118.v1
Chicago/Turabian Style
Niu, X., Kepeng HOU and Huafen Sun. 2023 "Study on Effect of Drawing Shear Factor on Underground Debris Flow in Natural Caving Method" Preprints. https://doi.org/10.20944/preprints202306.0118.v1
Abstract
The shear factor of ore drawing is one of the important factors affecting the formation of underground debris flow, and it has an important contribution to the formation of underground debris flow. The purpose of this paper is to study the effect of mining shear factor on underground debris flow in natural caving method. Based on the research background of the underground debris flow in Plan copper mine, this paper analyzes the characteristics of the slurry material structure of the underground debris flow, the influence of drawing shear factor on formation mechanism of underground debris flow is analyzed. The results show that the slurry of the underground debris flow in Plan mine is not only a pseudoplastic fluid but also a thixotropic fluid. It is indicated that once there is shearing force in drawing, it will deform, and its viscosity will decrease with the increase of shear rate and time. It is considered that the shear force produced by the flow of ore particles first produces shear action on the paste in the shear boundary region of ore drawing, it is reduced in viscosity and increased in fluidity, so that its “Activation” and then become a flowable paste, along with the bulk ore flow through the mouth. The continuous ore drawing process will continuously shear the new moraine slurry in the ore drawing channel and continuously “Activate” the moraine slurry in the ore drawing channel, finally, a certain scale and destructive down-hole debris flow accident. This paper is the first to study the effect of ore drawing shear factor on the formation mechanism of underground debris flow. It not only broadens the research field of debris flow, but also fills up the deficiency of systematic research on underground debris flow, and provides theoretical guidance for the prevention and control of underground debris flow.
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.
