We present the articles of the third issue of scientific journal "Mining Science and Technology” (Russia) for 2024:
Interesting studies have been conducted in the field of assessing the geotechnical stability of rock masses.
Using the calculated ratings, the rock masses of ore bodies and host sediments were evaluated for stability (classes/categories have been assigned), and the optimal method and parameters of workings support were determined. The geotechnical database accumulated during the research process provides the feasibility of calculating alternative ratings such as MRMR, RMi, GSI, etc., without the use of transient equations.
For more information, see the article:
🔥 Serebryakov E.V., Zaytsev I.A., Potaka A.A. Assessment of rating parameters of the rock mass conditions at Udachny underground mine deep levels. Mining Science and Technology (Russia). 2024;9(3):206-220. https://doi.org/10.17073/2500-0632-2023-12-192 🔥
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👉t.iss.one/MinSciTech👈
#inenglish #MST #televiewer #jointing #stability #supports #geomechanics #mining #working #mine #rock
Interesting studies have been conducted in the field of assessing the geotechnical stability of rock masses.
Using the calculated ratings, the rock masses of ore bodies and host sediments were evaluated for stability (classes/categories have been assigned), and the optimal method and parameters of workings support were determined. The geotechnical database accumulated during the research process provides the feasibility of calculating alternative ratings such as MRMR, RMi, GSI, etc., without the use of transient equations.
For more information, see the article:
🔥 Serebryakov E.V., Zaytsev I.A., Potaka A.A. Assessment of rating parameters of the rock mass conditions at Udachny underground mine deep levels. Mining Science and Technology (Russia). 2024;9(3):206-220. https://doi.org/10.17073/2500-0632-2023-12-192 🔥
Subscribe to the journal's Telegram channel:
👉t.iss.one/MinSciTech👈
#inenglish #MST #televiewer #jointing #stability #supports #geomechanics #mining #working #mine #rock
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How to Assess Rock Mass Stability at Deep Mine Levels?
Geomechanical rating classifications are key tools for designing underground mining operations. A new study presents a detailed assessment of rock mass conditions at deep levels of the Udachny mine using RMR and Q systems.
🔹 Key Findings from the Study:
• RMR: Range of 32–62 at Q = 1, median values:
o kimberlites of the Zapadny Ore Body (ZOB) — Class III stability;
o kimberlites of the Vostochny Ore Body (VOB) — Class IV;
o host rocks — Class II (average RMR = 54).
• Q-Index: Logarithmic range of 0.18–105.6, median values:
o VOB — Class D (poor condition);
o ZOB — Class C (fair condition);
o Host rocks — Class B (Q ~ 4–10).
• Rock Strength (UCS):
o kimberlites: 2.15–119.48 MPa (variability due to heterogeneous composition)
o host sediments: 28.14–71.73 MPa (average: 41.05 MPa)
• Jointing:
o host rocks — Class I (monolithic, >2 m spacing);
o ZOB — Class III (0.5–1 m spacing);
o VOB — Class IV (0.1–0.5 m spacing).
🔹 Practical Recommendations:
• for permanent workings: rockbolting (2 m length, 1–4 m spacing) with 5–6 cm shotcrete;
• for excavation junctions: reinforced support (2.5 m rockbolts, 9–12 cm shotcrete);
• moderate correlation between RMR and Q due to differing parameter sensitivities (e.g., RMR ignores rockbursts, Q omits strength).
The study highlights the need for integrated approaches: ratings require continuous updates as mining progresses.
📌 Read the full paper:
Serebryakov E.V., Zaytsev I.A., Potaka A.A. Assessment of rating parameters of the rock mass conditions at Udachny underground mine deep levels. Mining Science and Technology (Russia). 2024;9(3):206-220. https://doi.org/10.17073/2500-0632-2023-12-192
🔔 Follow our Telegram channel: t.iss.one/MinSciTech
#InEnglish #MST #RatingClassification #RMR #Q #UdachnayaKimberlitePipe #Televiewer #Jointing #RockMassStability #Support #Geomechanics #RockProperties #Drilling #CoreLogging #Rockbolts #Shotcrete #Depth #Mapping #Stress #Modeling
Geomechanical rating classifications are key tools for designing underground mining operations. A new study presents a detailed assessment of rock mass conditions at deep levels of the Udachny mine using RMR and Q systems.
🔹 Key Findings from the Study:
• RMR: Range of 32–62 at Q = 1, median values:
o kimberlites of the Zapadny Ore Body (ZOB) — Class III stability;
o kimberlites of the Vostochny Ore Body (VOB) — Class IV;
o host rocks — Class II (average RMR = 54).
• Q-Index: Logarithmic range of 0.18–105.6, median values:
o VOB — Class D (poor condition);
o ZOB — Class C (fair condition);
o Host rocks — Class B (Q ~ 4–10).
• Rock Strength (UCS):
o kimberlites: 2.15–119.48 MPa (variability due to heterogeneous composition)
o host sediments: 28.14–71.73 MPa (average: 41.05 MPa)
• Jointing:
o host rocks — Class I (monolithic, >2 m spacing);
o ZOB — Class III (0.5–1 m spacing);
o VOB — Class IV (0.1–0.5 m spacing).
🔹 Practical Recommendations:
• for permanent workings: rockbolting (2 m length, 1–4 m spacing) with 5–6 cm shotcrete;
• for excavation junctions: reinforced support (2.5 m rockbolts, 9–12 cm shotcrete);
• moderate correlation between RMR and Q due to differing parameter sensitivities (e.g., RMR ignores rockbursts, Q omits strength).
The study highlights the need for integrated approaches: ratings require continuous updates as mining progresses.
📌 Read the full paper:
Serebryakov E.V., Zaytsev I.A., Potaka A.A. Assessment of rating parameters of the rock mass conditions at Udachny underground mine deep levels. Mining Science and Technology (Russia). 2024;9(3):206-220. https://doi.org/10.17073/2500-0632-2023-12-192
🔔 Follow our Telegram channel: t.iss.one/MinSciTech
#InEnglish #MST #RatingClassification #RMR #Q #UdachnayaKimberlitePipe #Televiewer #Jointing #RockMassStability #Support #Geomechanics #RockProperties #Drilling #CoreLogging #Rockbolts #Shotcrete #Depth #Mapping #Stress #Modeling
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