Microseismicity Induced by Fault Activation During the Fracture Process of a Crown Pillar

详细信息    查看全文

• 作者：Penghai Zhang ; Tianhong Yang ; Qinglei Yu ; Tao Xu…
• 关键词：Transition from open pit to underground mining ; Microseismic monitoring ; Crown pillar ; Buried fault ; Fracture process
• 刊名：Rock Mechanics and Rock Engineering
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：48
• 期：4
• 页码：1673-1682
• 全文大小：1,972 KB
• 参考文献：Aminzadeh F, Tafti TA, Maity D (2013) An integrated methodology for sub-surface fracture characterization using microseismic data: a case study at the NW Geysers. Comput Geosci 54:39鈥?9View Article
  Amitrano D (2003) Brittle-ductile transition and associated seismicity: experimental and numerical studies and relationship with the b value. J Geophys Res 108:2044鈥?059View Article
  Carter TG (1992) A new approach to surface crown pillar design. 16th Canadian rock mechanics symposium. Laurentian University, Sudbury, pp 75鈥?4
  Chen J, Guo D, Li J (2003) Optimization principle of combined surface and underground mining and its applications. J Cent South Univ Technol 10:222鈥?25View Article
  Elmo D, Vyazmensky A, Stead D, Rance JR (2007) A hybrid FEM/DEM approach to model the interaction between open-pit and underground block-caving mining. In: 1st Canada/United states rock mechanics symposium, Vancouver, Canada, 2007, pp 1287鈥?294
  Gale WJ, Heasley KA, Iannacchione AT et al (2001) Rock damage characterisation from microseismic monitoring. In: Elsworth D, Tinucci JP, Heasley KA (eds) Rock mechanics in the national interest. Swets and Zeitlinger, Washington, DC, pp 1313鈥?320
  Ge MC (2005) Efficient mine microseismic monitoring. Int J Coal Geol 64:44鈥?6View Article
  Gutenberg B, Richter CF (1954) Seismicity of the earth and associated phenomena, 2nd edn. Princeton University, Princeton
  Hutchinson DJ, Phillips C, Cascante G (2002) Risk considerations for crown pillar stability assessment for mine closure planning. Geotech Geol Eng 20:41鈥?3View Article
  Iannacchione AT, Bajpayee TS (2005) Forecasting roof falls with monitoring technologies-a look at the Moonee Colliery experience. In: 24th Int. Conf. Ground Control Min, Morgantown, 2005, pp 44鈥?1
  Lei XL (2006) Typical phases of pre-failure damage in granitic rocks under differential compression, vol 261. Geological Society, London, pp 11鈥?9
  Li T, Mei TT, Sun XH et al (2013a) A study on a water-inrush incident at Laohutai coalmine. Int J Rock Mech Min Sci 59:151鈥?59
  Li XB, Li DY, Liu ZX, Zhao GY, Wang WH (2013b) Determination of the minimum thickness of crown pillar for safe exploitation of a subsea gold mine based on numerical modeling. Int J Rock Mech Min Sci 57:42鈥?6
  Liu JP, Feng XT, Li YH, Xu SD, Sheng Y (2013) Studies on temporal and spatial variation of microseismic activities in a deep metal mine. Int J Rock Mech Min Sci 60:171鈥?79
  Ma SL, He CR (2001) Period doubling as a result of slip complexities in sliding surfaces with strength heterogeneity. Tectonophysics 337:135鈥?45View Article
  Mendecki A (1997) Seismic monitoring in mines. Chapman and Hall, London
  Nan SQ (2007) Investigation on the stability of boundary pillar and mining technology in transition open-pit to underground mine. Northeastern University, China
  Santis AD, Cianchini G, Favali P, Beranzoli L, Boschi E (2011) The Gutenberg鈥揜ichter law and entropy of earthquakes: two case studies in central Italy. Bull Seismol Soc Am 101:1386鈥?395View Article
  Schorlemmer D, Wiemer S, Wyss M (2005) Variations in earthquake size distribution across different stress regimes. Nature 437:539鈥?42View Article
  Srinivasan C, Arora SK, Benady S (1999) Precursory monitoring of impending rock bursts in Kolar gold mines from microseismic emissions at deeper levels. Int J Rock Mech Min Sci 36:941鈥?48View Article
  Szwedzicki T (2003) Rock mass behaviour prior to failure. Int J Rock Mech Min Sci 40:573鈥?84View Article
  Tawadrous AS, Katsabanis PD (2007) Prediction of surface crown pillar stability using artificial neural networks. Int J Numer Anal Meth Geomech 31:917鈥?31View Article
  Tezuka K, Niitsuma H (2000) Stress estimated using microseismic clusters and its relationship to the fracture system of the Hijiori hot dry rock reservoir. Eng Geol 56:47鈥?2View Article
  Xu NW, Tang CA, Li LC et al (2011) Microseismic monitoring and stability analysis of the left bank slope in Jinping first stage hydropower station in southwestern China. Int J Rock Mech Min Sci 48:950鈥?63View Article
  
• 作者单位：Penghai Zhang (1) (2)
  Tianhong Yang (1) (2)
  Qinglei Yu (1) (2)
  Tao Xu (1) (2)
  Wancheng Zhu (1) (2)
  Honglei Liu (1) (2)
  Jingren Zhou (1) (2)
  Yongchuan Zhao (1) (2)
  
  1. Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, Northeastern University, Shenyang, China
  2. School of Resources and Civil Engineering, Northeastern University, Shenyang, China
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geophysics and Geodesy
  Civil Engineering
  
• 出版者：Springer Wien
• ISSN：1434-453X

文摘

Shirengou iron mine in Hebei Province, China is now under transition from open pit to underground mining. During this process, the unstable failure risk of crown pillar is growing as a result of underground mining, fault activation and water seepage. To monitor the stability of the crown pillar, a microseismic monitoring system was equipped in 2006. Based on temporal and spatial distribution of microseismic events and deformation mechanism, it was found that it is the propagation of the buried fault F15 that causes the failure of the crown pillar, resulting in increased water seeping into the underground drifts. By analyzing the temporal changes in multiple microseismic parameters during the fracture process of the crown pillar, it was found that several distinct abnormalities in the microseismic data such as a rapid decrease in the b value, a sharp increase in energy release, an abnormal increase in apparent stress and a low dominant frequency, could be judged as the signal of an increasing risk. Therefore, the microseismic monitoring has been proven to be a suitable method for understanding damage and fracture process of the crown pillar during the transition from open pit to underground mining.