In-situ stress measurement and its numerical analysis in Hongyang mining area

被引：0
|
作者：
Wang J. [1 ,2 ]
Feng Z. [1 ,2 ]
Meng Z. [1 ,2 ]
Zhang Y. [3 ]
Wang H. [1 ,2 ]
Jiang Q. [1 ,2 ]
机构：
[1] State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining & Technology (Beijing), Beijing
[2] School of Mechanics & Civil Engineering, China University of Mining & Technology (Beijing), Beijing
[3] School of Mining Engineering Heilongjiang University of Science and Technology, Harbin, 150022, Heilongjiang
来源：
Caikuang yu Anquan Gongcheng Xuebao/Journal of Mining and Safety Engineering | 2017年 / 34卷 / 01期
关键词：
Deep mining; Distribution law; Hollow inclusion stress release method; In-situ stress; Numerical analysis;
D O I：
10.13545/j.cnki.jmse.2017.01.021
中图分类号：
学科分类号：
摘要：
With the largest mining depth being more than 1000 meters in the main mining coal seams 8 and 12 in Hongyang mining area, dynamic disasters occur during gateway excavation and stoping in the working face. For the causes of the disasters and the control technology, hollow inclusion stress release method was adopted to measure the in-situ stress at 6 points of different depth in this mining area. The measurement results have shown that at each measuring point two principal stress directions are approximately horizontal, and another principal stress direction is approximately vertical, the maximum horizontal principal stress is 1.395 times of the vertical stress in average, and the horizontal tectonic stress field is the main form of in-situ stress field; vertical stress at each measuring point is slightly greater than the weight of overlying strata; the change rule of the maximum principal stress, the minimum principal stress and the vertical principal stress with depth were studied; the direction of the maximum principal stress measured is NW-SE with the average azimuth of NW 47.9°. According to the numerical simulation results, the peak position (the rockburst area) of maximum principal stress locates in the working face group of third northern mining district, while the in-situ stress levels in other mining areas are relatively lower as they are far away from the peak region, and the lowest stress levels region is close to the fault or the fault crossing region. © 2017, Editorial Board of Journal of Mining & Safety Engineering. All right reserved.
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页码：134 / 140
页数：6
相关论文
共 16 条
  • [1] Wang C., Brief review and outlook of main estimate and measurement methods for in-situ stresses in rock mass, Geological Review, 60, 5, pp. 971-996, (2014)
  • [2] Li C., Analysis of tectonic stress and its engineering meaning, Miner Resource Geol, 9, 3, (1995)
  • [3] Brown E.T., Hoek E., Technical note trends in relationships between measured in-situ stress and depth, International Journal Rock Mechanics Mining Science & Geomechanical Abstract, 15, pp. 211-215, (1978)
  • [4] Cai M., Studies of temperature compensation techniques in rock stress measurements, Chinese Journal of Rock Mechanics and Engineering, 10, 3, pp. 227-235, (1991)
  • [5] Cai M., Studies of some problems on in-situ stress measurement accuracy, Journal of Yangtze River Scientific Research Institute, 9, 3, pp. 45-52, (1992)
  • [6] Pan Y., Tan Z., Yan H., Et al., Measure-ment and numerical simulation analysis of in-situ stresses in Daanshan coal mine, Journal of China Coal Society, 35, pp. 39-53, (2010)
  • [7] Zhou G., Li Y., Wu Z., Et al., Measure-ment of crustal stress and analysis of characteristics in Datun mining area, Journal of China Coal Society, 30, 3, pp. 314-318, (2005)
  • [8] Zhang C., Wu M., Liao C., In-situ stress measurement and study of stress state characteristics of Jinchuan No. 3 mine, Rock and Soil Mechanics, 34, 11, pp. 3254-3260, (2013)
  • [9] Kang H., Lin J., Zhang X., Et al., In-situ stress measurements and distribution laws in Lu'an underground coal mines, Rock and Soil Mechanics, 31, 3, pp. 827-831, (2010)
  • [10] Kang H., Yan L., Zhang J., Measure-ments and analysis of ground stress in Fenxi coal mine area, Journal of Mining & Safety Engineering, 26, 9, pp. 263-268, (2009)
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