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Scientific, Technological and Production Journal
ISSN 2079–3332 (print)
ISSN 3034-6835 (online)
founded in 2001

A mechanical-mathematical model for calculating the deformed state of the roof of uranium in-situ leaching

Original articles: 2026 No 3

A mechanical-mathematical model for calculating the deformed state of the roof of uranium in-situ leaching

DOI: 10.56195/20793332-2026-26-3-62-67

Read in pdf Ye. S. Oryngozhin1,2, R. A., Yusubaliev3, M. K. Djexenov4, Ye. Ye. Oryngozha5, N. A. Miletenko6
  1. Institute of mining after D.A. Kunaevа, Almaty, Republic of Kazakhstan
  2. Al-Farabi Kazakh national university, Almaty, Republic of Kazakhstan
  3. National Engineering Academy of the Republic of Kazakhstan, Almaty, Republic of Kazakhstan
  4. Atyrau university named after H. Dosmukhamedova, Atyrau, Republic of Kazakhstan
  5. G. Daukeev Almaty University of Energy and Communications, Almaty, Republic of Kazakhstan
  6. Academician Melnikov Institute of Comprehensive Exploitation of Mineral Resources - IPKON, Russian Academy of Sciences, Moscow, Russian Federation
p. 62-67
Abstract:
Uranium is a type of nuclear fuel and is considered a strategic material for military purposes and for ensuring national energy independence. Traditional mining involves extracting ore from the ground, crushing it, and processing it to obtain the desired minerals. In-situ leaching (ISL) technology, also known as solution mining, leaves the ore in situ and pumps liquids through it to leach the minerals. This article presents a mechanical and mathematical model for calculating the deformation state of the roof of uranium ISL chambers. During underground mining using the ISL method, the eroded rock mass experiences a complex set of alternating stresses and strains, leading to rock displacement and fracture. The formation of ISL chambers during erosion of a sedimentary rock mass leads to a disruption of the original stress state of the mass, rock deformation, and roof collapse of the chambers. The ISL cleaning chambers are developed in sectors around the production well. The sectors are developed by hydraulically flushing the rock with working fluid at opening angles of αmin ⇒ αmax, with washout radii of Rmin ⇒ Rmax, depending on the physical and mechanical properties of the rock and the stability of the exposed roof.
Keywords:
In-situ leaching, uranium, mechanical-mathematical model, deformed state, chamber roofs, stress, rock failure
For citation:
Oryngozhin Ye.S., Yusubaliev R.A., Jexenov M.K., Oryngozha Ye.Ye., Miletenko N.A. A mechanical-mathematical model for calculating the deformed state of the roof of uranium underground leaching chambers. Mine Surveying and Subsurface Use. 2026; 26 (3): 62-67. (In Russ.). https://doi.org/10.56195/20793332-2026-26-3-62-67.
Information about the authors:
  1. Yernaz S. Oryngozhin – Dr. Sci. (Eng.), Al-Farabi Kazakh National University, Chief Researcher at the Institute of Mining named after D.A. Kunaev, Almaty, Republic of Kazakhstan
  2. Renat A. Yusubaliev Surveyor, National Engineering Academy of the Republic of Kazakhstan, Almaty, Republic of Kazakhstan; https://orcid. org/0000-0001-8993-9986
  3. Makhambet K. Djexenov Cand. Sci. (Geography), Atyrau university named after H. Dosmukhamedova, Atyrau, Republic of Kazakhstan; https:// orcid.org/0000-0002-1741-3931
  4. Yeraly Ye. Oryngozha – PhD doctoral student, Almaty University of Power Engineering and Telecommunications named after Gumarbek Daukeyev, Almaty, Republic of Kazakhstan; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.; https://orcid.org/0000-0002-9130-0994
  5. Natalya A. Miletenko Cand. Sci. (Eng.), Senior Researcher, Institute of Comprehensive Exploitation of Mineral Resources named after academician N.V. Melnikov Russian Academy of Sciences, Moscow, Russian Federation; https://orcid.org/0000-00025594-3036
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