Research on the Mechanical Behavior and Rockburst Risk of the Deep-Buried Roadway at the Stratigraphical Boundary of Different Lithologies
Source abstract
Abstract
It has been found in engineering practice that the degree of rockburst risk increases when roadway excavation occurs near the stratigraphical boundary of different lithologies. This study uses the 1276 m deep-buried roadway of a lead–zinc mine in Yunnan, China, as its engineering background. Based on a numerical analysis of this case, it investigates the mechanical behavior of surrounding rocks in different lithological formations and explores the causes of excavation-induced rockburst. Additionally, by changing the excavation strategy in a numerical simulation, the influence of the direction of roadway excavation on the degree of rockburst risk in the construction of different lithological formations is assessed. The results are summarized as follows: (1) When the tunnel passes from the C1b stratum (limestone) to the D3zg stratum (dolomite), an abnormal stress zone forms in the roof rock strata of the D3zg stratum (the lower plate of the stratum boundary). The rockburst risk level was evaluated by introducing the numerical rockburst index in this abnormal stress zone, which aligns closely with on-site rockburst investigation results. The rockburst risk is the greatest in the abnormal stress zone, which provides an external energy storage environment for the development of rockburst disasters. (2) Near the stratum boundary, the rockburst risk level when excavating from the D3zg stratum to the C1b stratum is greater than that when excavating from the C1b stratum to the D3zg stratum. The direction of tunnel excavation significantly affects the rockburst risk level during construction that crosses different lithological strata. These findings can provide a theoretical basis for the construction design of similar underground projects.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Rock Mechanics and Modeling · Landslides and related hazards · Geomechanics and Mining Engineering
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Resources and Safety Engineering, University of Science and Technology Beijing, Beijing 100083, China
Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines, USTB, Beijing 100083, China
Aluminum Corporation of China Limited, Beijing 100082, China
Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area, Ministry of Natural Resources of the People’s Republic of China, Kunming 650093, China
Information Institution of Ministry of Emergency Management, Beijing 100029, China
Funding
the National Natural Science Foundation of China · Yunnan Innovation Team · Yunnan Major Scientific and Technological Projects · S&T Innovation and Development Project of Information Institution of Ministry of Emergency Management · Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area, Ministry of Natural Resources of the People’s Republic of China · Yunnan Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area
References (36)
Show source-provided references
1. A review of rockburst: Experiments, theories, and simulations10.1016/j.jrmge.2022.07.014 ↗
2. A two-step method for predicting rockburst using sound signals10.1007/s11440-023-01946-w ↗
3. Study on the development process of rockbursts
4. Yu, Q. (2016). Study on Rockburst Nucleation Process and Early Warning Method of Deep-Buried Tnnels. [Ph.D. Thesis, Dalian University of Technology].
5. Progress, prediction and prevention of rockbursts in underground metal mines
6. Rockburst in underground excavations: A review of mechanism, classification, and prediction methods10.1016/j.undsp.2021.11.008 ↗
7. Research progress of rockburst prediction and early warning in hard rock underground engineering
8. Numerical modeling for rockbursts: A state-of-the-art review10.1016/j.jrmge.2020.09.011 ↗
9. Evaluation method of rockburst: State-of-the-art literature review10.1016/j.tust.2018.08.029 ↗
10. A review of long-term and short-term rockburst risk evaluations in deep hard rock
11. Mechanical behaviour of scaled-down unsupported tunnel walls in hard rock under high stress10.1016/j.tust.2016.07.012 ↗
12. An Index for Estimating the Stability of Brittle Surrounding Rock Mass: FAI and its Engineering Application10.1007/s00603-011-0150-9 ↗
13. Rockmass damage development following two extremely intense rockbursts in deep tunnels at Jinping II hydropower station, southwestern China10.1007/s10064-013-0470-y ↗
14. Numerical investigation of damage risks of roadway surrounding rocks under oblique incident dynamic loads
15. Research on rockburst mechanism and profile suitability of deep-buried tunnel in fold structure body
16. Analytical estimation of stress distribution in interbedded layers and its implication to rockburst in strong layer10.1016/j.tust.2018.07.007 ↗
17. Prediction and prevention of rockburst in metal mines—A case study of Sanshandao gold mine10.1016/j.jrmge.2015.11.002 ↗
18. Study of rockburst prediction based on in-situ stress measurement and theory of energy accumulation caused by mining disturbance
19. Sepehri, M. (2016). Finite Element Analysis Model for Determination of In-Situ and Mining Induced Stresses as a Function of Two different Mining Methods Used at Diavik Diamond Mine. [Ph.D. Thesis, University of Alberta].
20. Evaluation of mining-induced energy and rockburst prediction at a diamond mine in Canada using a full 3D elastoplastic finite element model10.1016/j.enggeo.2019.105457 ↗
21. Rockburst Characteristics and Mechanisms during Steeply Inclined Thin Veins Mining: A Case Study in Zhazixi Antimony Mine, China
22. Comprehensive prediction of rockburst based on analysis of strain energy in rocks10.1016/S0886-7798(01)00030-X ↗
23. Rockburst characteristics and numerical simulation based on a strain energy density index: A case study of a roadway in Linglong gold mine, China10.1016/j.tust.2017.05.011 ↗
24. A new energy index for evaluating the tendency of rockburst and its engineering application10.1016/j.enggeo.2017.09.015 ↗
25. Study on rockburst proneness of deep tunnel under different geo-stress conditions based on DEM10.1007/s10706-021-01969-8 ↗
26. Xue, Y., Cao, Z., Du, F., and Zhu, L. (2018). The influence of the backfilling roadway driving sequence on the rockburst risk of a coal pillar based on an energy density criterion. Sustainability, 10.10.3390/su10082609 ↗
27. Evaluation of excavation method on point load strength of rocks with poor geological conditions in a deep metal mine10.1007/s40948-023-00629-w ↗
28. Discussion on rock burst proneness indexes and their relation
29. Xia, Z.Y. (2021). Study on Instability Mechanism and Prevention Measure of Extraction Structure in Block Caving Mine. [Ph.D. Thesis, University of Science and Technology Beijing].10.1155/2021/9932932 ↗
30. Empirical estimation of rock mass modulus10.1016/j.ijrmms.2005.06.005 ↗
31. Hoek, E., Carranza-Torres, C., and Corkum, B. (2002, January 7–10). Hoek-Brown failure criterion–2002 Edition. Proceedings of the Fifth North American Rock Mechanics Symposium, Toronto, ON, Canada.
32. Gao, Y.H. (2015). Study on Determining Representative Elementary Volume of Equivalent Rock Mass and the Mechanical Behavior of Joints. [Ph.D. Thesis, University of Science and Technology Beijing].
33. Sun, X., Li, G., Zhao, C., Liu, Y., and Miao, C. (2018). Investigation of Deep Mine Shaft Stability in Alternating Hard and Soft Rock Strata Using Three-Dimensional Numerical Modeling. Processes, 7.10.3390/pr7010002 ↗
34. Research on influence of stress-strain evolution in immediate floor before and after excavation face on origin floor heave in coal mines roadways10.1088/1755-1315/1415/1/012026 ↗
35. Geomechanical effects of stress shadow created by large-scale destress blasting10.1016/j.jrmge.2017.09.004 ↗
36. Numerical simulation of rockburst stress state during excavation of underground powerhouse of pubugou hydropower station