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ArticleName Efficiency evaluation of destressing drilling by numerical and physical modeling toward rockburst nonhazardous conditions in mines
DOI 10.17580/gzh.2023.05.05
ArticleAuthor Bagautdinov I. I., Zuev B. Yu., Streshnev A. A.

Research Center for Geomechanics and Mining Practice Problems, Saint-Petersburg Mining University, Saint-Petersburg, Russia:

I. I. Bagautdinov, Leading Researcher of Laboratory for Rock Pressure at Metalliferous and Nonmetalliferous Deposits, Candidate of Engineering Sciences
B. Yu. Zuev, Head of Modeling Laboratory, Candidate of Engineering Sciences,


Kirovsk Branch of Apatit, PhosAgro, Kirovsk, Russia:
A. A. Streshnev, Head of Departament of Rockburst Forecasting and Prevention


The article puts forward and describes an integrated numerical/physical modeling procedure to improve evaluation efficiency of destressing drilling aimed at creating rockburst unhazardous conditions in underground openings. When rocks in the interwall space reaches the limit state under the action of rock pressure, the zones of stress concentration displace from the boundary of an underground opening into the depth of rock mass. As a result of the proposed activity implemented in underground mines of Apatit’s Division in Kirovsk, the risk of an underground rock burst was reduced essentially upon condition of effective project and actual designs of destress boreholes. The 3D axially symmetric numerical modeling of a destress hole at the boundary of a single roadway used the certified Bentley Systems PLAXIS 3D software package. Furthermore, the same process of destressing drilling at the boundary of a single roadway was reproduced in physical modeling using equivalent materials. The source data of the physical modeling were the data assumed in the numerical modeling. Combining the strongest points of the numerical modeling in the geomechanical research of 2D and 3D problems at the extensive variation of rock characteristics with the strongest points of the physical modeling when investigating nonlinear processes of rock fracture can provide a more complete idea of the subject and can enhance reliability of prediction of geodynamic phenomena induced by rock pressure. The described studies prove the promising nature of integration of the numerical and physical modeling methods toward research reliability improvement.

keywords Numerical modeling, physical modeling, lab-scale testing, equivalent materials, destress boreholes

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