Analysis of Mechanical Characteristics and Instability Law of Inverse Fault under the Influence of Mining
In order to explore the mechanical characteristics and stability of the reverse fault under the influence of mining, an inverse mechanics model has been built under work face mining conditions, according to the law of working surface pressure distribution. As a result, a theoretical calculation equation of the normal and shear stresses in the fault zone have been deduced to obtain the stress variation rule between the working surface and the fault layer, under distance conditions of 10, 30, 50, and 70m. With distance conditions of 10 and 30m, the working surface mining stress had an obvious effect on the reverse fault, resulting in a changing trend of firstly increasing, then decreasing, and increasing again in the normal and shear stresses of the fault zone as a whole. With distance conditions of 50 and 70m, the working face mining stress had little effect on the reverse fault; furthermore, the normal and shear stresses exhibited a changing trend of gradually increasing. At a later stage, a simulation of the above distance plans was conducted using the FLAC3D numerical simulation software. The results demonstrated that the influence range of the mining stress on the working face under the spacing distances of 10 and 30m included the fault zone, while under the distance conditions of 50 and 70m, the fault zone was excluded. On this basis, the fault zone stability was analysed under four types of spacing conditions by means of the Mohr Coulomb theory rule and fault activation determination. It is concluded that the fault zone stability was high, with increasing distances between the working face and fault zone. The least sufficient stability was located near the working face, where the fault zone stability was so poor that it is likely to result in impact fracture.
Se construyó un modelo mecánico inverso bajo las condiciones de un frente de trabajo minero, de acuerdo con las condiciones de distribución de presión en la superficie de operación, para explorar las características mecánicas y la estabilidad de la falla inversa en estas áreas de explotación minera. Como resultado, se dedujo una ecuación teórica para calcular el esfuerzo normal y el esfuerzo cortante en la zona de falla y con el fin de obtener el régimen de variación de esfuerzos entre la superficie de trabajo y la capa de la falla a distancias de 10, 30, 50 y 70 metros. A 10 y 30 metros de distancia, el esfuerzo en la zona de trabajo tiene un efecto notorio en la falla inversa, lo que significa un cambio en la tendencia de los esfuerzos normal y cortante, que primero se incrementan, decrecen y nuevamente aumentan en toda la zona de la falla. A 50 y 70 metros, el esfuerzo en el frente de trabajo tiene poco efecto en la falla inversa; además, los esfuerzos normal y cortante mostraron una tendencia cambiante de crecimiento gradual. Por último, se realizó una simulación en cada una de las distancias con el software de simulación numérica FLAC3D. Los resultados demuestran que el rango de influencia del esfuerzo en el frente de trabajo a distancia de 10 y 30 metros incluyen la zona de falla, mientras que a 50 y 70 metros la zona de falla está excluida. De acuerdo con estos resultados, se analizó la estabilidad de la zona de falla en cuatro condiciones de espacio con la teoría de Mohr-Coulomb y la determinación de activación de falla. Se concluye que la estabilidad en la zona de falla es mayor con el incremento de las distancias entre el frente de trabajo y la zona de falla. El menor punto de estabilidad suficiente se ubicó cerca del frente de trabajo, donde la estabilidad de la zona de falla es tan baja que podría derivar en una fractura de impacto.
Datos bibliográficos
Título traducido: | Análisis de las características mecánicas y las condiciones de inestabilidad de fallas en áreas de explotación minera |
---|---|
Título de la revista: | Earth Sciences Research Journal |
Primer autor: | Yuanhui Li |
Otros autores: | Rui Zhou |
Palabras clave: | |
Palabras clave traducidas: | |
Idioma: | Inglés |
Enlace del documento: | https://revistas.unal.edu.co/index.php/esrj/article/view/72249 |
Tipo de recurso: | Documento de revista |
Fuente: | Earth Sciences Research Journal; Vol 22, No 2 (Año 2018). |
DOI: | http://dx.doi.org/10.15446/esrj.v22n2.72249 |
Entidad editora: | Universidad Nacional de Colombia |
Derechos de uso: | Reconocimiento - NoComercial - CompartirIgual (by-nc-sa) |
Áreas de conocimiento / Materias: | Ciencias Físicas e Ingeniería --> Ciencias de la Tierra |
Datos bibliométricos
WOS
Documentos citados: | Asghar, Z., Ali, W., Nasir, A., & Arshad, A. (2018). Atmospheric Monitoring for Ambient Air Quality Parameters and Source Apportionment of City Faisalabad, Pakistan. Earth Sciences Pakistan, 2(1), 01-04. Díaz-Aguado, M. B., & González-Nicieza, C. (2007). Control and prevention of gas outbursts in coal mines, Riosa–Olloniego coalfield, Spain. International Journal of Coal Geology, 69, 253-266. Gibowicz, S. J. (1984). The mechanism of large mining tremors in Poland(1984). Rockbursts and seismicity in mines, 22, :17-28. Guan Leong, T., Tahir, S.H. & Asis, J. (2018). Stratigraphy of Paleogene Sequences in Wes ton – Sipitang, Sabah. Geological Behavior, 2(1), 01-04. Jiang, F. X., & Liu, W. J. (2010). Coupling study of microseismic monitoring and numerical simulation for tectonic activation. Journal of China Coal Society, 35, 900-904. Jiang, Y. D., Pan, Y. S., Jiang, F. X., Dou, L. M., & Ju, Y. (2014). State of the art review on mechanism and prevention of coal bumps in China. Journal of China Coal Society, 39, 205-213. Jiang Fuxing,LIU Weijian. Coupling study of microseismic monitoring and numerical simulation for tectonic activation.(2010). Journal of China Coal Society, 35: 900-904. Jiang Yaodong, Pan Yishan, Jiang Fuxing, et al. (2014) State of the art review on mechanism and prevention of coal bumps in China. Journal of China Coal Society, 39: 205-213. Joughin, N. C., & Jager, A. J. (1984). Fracture of rock at stope faces in South African gold mines. Proceedings of Symposium of Rockbursts: Prediction and Control, 27, 53 -66. Khanchoul, K., Saaidia, B., & Altschul, R. (2018). Variation in Sediment Concentration and Water Discharge During Storm Events in Two Catchments, Northeast of Algeria. Earth Sciences Malaysia, 2(2), 01-09. James W, LaMoreaux, J. W., Wu, Q., & Zhou, W. (2014). New development in theory and practice in mine water control in China. Carbonates and Evaporites 29, 141–145. Li, Z. L., Dou, L. M., Cai, W., Wang, G. F., He, J., Gong, S. Y., and & Ding, Y. L., (2014). Investigation and analysis of the rock burst mechanism induced within fault–pillars. International Journal of Rock Mechanics and Mining Sciences, 70, 192–200. Mahmood, S., Kazmi, S.T., & Ali, S.S. (2018). Comparison of Drinking Water Bottles of Different Countries Along with Zamzam Water, Pakistan. Earth Sciences Pakistan, 2(1), 05-14. María B, Díaz A, González NC (2007) Control and prevention of gas outbursts in coal mines, Riosa–Olloniego coalfield, Spain. Int J Coal Geol 69:253–266. McGarr, A. (1984). Some applications of seismic source mechanism studies to assessing underground hazard(1984). Rockbursts and seismicity in mines, 31, 199-208. Nwankwoala, H.O., & Ememu, A.J. (2018). Hydrogeochemical Signatures and Quality Assessment of Groundwater in Okpoko And Environs, Southeastern Nigeria. Pakistan Journal of Geology, 2(1), 06-11. Potgieter, G. J., & Roering, C. (1984). The influence of geology on the mechanisms of mining-associated seismicity in the Klerksdrop gold-field. Rockbursts and seismicity in mines, 11, 1984, 45 -50. Qian, M. G. (2003). Minggao, Shi Pingwu, Ground Pressure and Strata Control. Xuzhou: China University of Mining and Technology press. Rahim, I. A., Asis, J., & Mohd Husin, M. A. Y. (2018). Comparison of Different Type of Friction Angle in Kinematic Analysis. Malaysian Journal of Geosciences, 2(1), 35-38. Sudhakaran, M., Ramamoorthy, D., Savitha, V., & Balamurugan, S. (2018). Assessment of trace elements and its influence on physio-chemical and biological properties in coastal agroecosystem soil, Puducherry region. Geology, Ecology, and Landscapes, 2(3), 169-176. Sufiyan, I., Zakariya, R., Yacoob, R., Idris, M.S., & Idris, N. M. (2018). SWAT Subbasins Parameters and Flood Risk Simulations Using 3d In Terengganu Watershed. Earth Sciences Malaysia, 2(2), 10-15. Tair, R. & Dell, L. (2018). Spring-Water as An Alternative Resource After Earthquake for Villagers, Kota Belud Sabah. Geological Behavior, 2(1), 05-11. Tan, Y. L., Ning, J. G., & Zhao, T. B., (2011). Deformation and control of deep roadways. Beijing: Coal Industry Press., 2011. Veeraragavan, S., Duraisamy, R., & Mani, S. (2018). Seasonal variation of soil enzyme activities in relation to nutrient and carbon cycling in Senna alata (L.) Roxb invaded sites of Puducherry region, India. Geology, Ecology, and Landscapes, 2(3), 155-168. Wali, E., Phil-Eze, P.O., & Nwankwoala, H.O. (2018). Forecasting the Future Pattern of Land Use and Land Cover Change in The Wetland Ecosystem of The Port Harcourt Metropolis. Pakistan Journal of Geology, 2(1), 01-05. Xiao, Y. X., Feng, X. T., Li, S. J., Feng, G. L., & Yu, Y. (2016). Rock mass failure mechanisms during the evolution process of rockbursts in tunnels. International Journal of Rock Mechanics and Mining Sciences, 83,174-181. |
---|