A large-scale three-dimensional coal and gas outburst quantitative physical modeling system

被引：0
|
作者：
Li S. [1 ]
Li Q. [1 ]
Wang H. [1 ]
Yuan L. [1 ,2 ,3 ]
Zhang Y. [1 ]
Xue J. [3 ]
Zhang B. [1 ]
Wang J. [1 ]
机构：
[1] Research Centre of Geotechnical and Structural Engineering, Shandong University, Jinan
[2] School of Ming and Safety Engineering, Anhui University of Science and Technology, Huainan
[3] Huainan Mining(Group) Co., Ltd., State Key Laboratory of Deep Coal Mining & Environment Protection, Huainan
来源：
Meitan Xuebao/Journal of the China Coal Society | 2018年 / 43卷
关键词：
Coal and gas outburst; Gas-solid coupling; Intelligent excavation; Quantitative physical simulation; System development;
D O I：
10.13225/j.cnki.jccs.2017.1076
中图分类号：
学科分类号：
摘要：
Coal and gas outburst quantitative physical modeling under a variety of conditions has become the main method to reveal the mechanism of coal and gas outburst. Based on the CSIRO outburst model and combination theory hypothesis, according to similarity criterion, a large-scale true three-dimensional coal and gas outburst quantitative physical modeling system was developed, which can consider the possible combina-tions of geologic setting, geo-stress, coal density, gas pressure and construction process. The system consists of five key units:model counter-force apparatus and seal space unit, high geo-stress gradient loading and control unit, mass flow and high pressure gas filling unit, tunnel micro-TBM(Tunnel Boring Machine) and high-speed recording unit, and multi-information instantaneous acquisition unit. The system with the maximum model size of 1.5 m×1.5 m×3 m(long×width×thick) was developed, and the maximum loading capacity was 60 MPa, which could achieve the true 3D gradient loading, the thickness direction of model could be adjusted by a multiple of 0.6 m, and the maximum inflating pressure was 3 MPa. The maximum acquisition frequency of micro fiber grating sensor was 500 kHz and the maximum excavation speed of laneway was 10 cm/min. The units work together to simulate the coal and gas outburst of rock cross-cut coal uncovering in the gas-solid coupling and three dimensional loading conditions, providing a quantitative simulation platform for researching the outburst occurrence conditions in different factor combinations and revealing the coal and gas outburst mechanism. © 2018, Editorial Office of Journal of China Coal Society. All right reserved.
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页码：121 / 129
页数：8
相关论文
共 22 条
  • [1] Tang J., Jiang C., Li X., Et al., Relationship and research progress of coal and gas outburst mechanism and outburst predication, Safety in Coal Mines, 47, 4, pp. 186-190, (2016)
  • [2] Zhou S., He X., Rheological hypothesis of coal and methane outburst mechanism, Journal of China University of Mining & Technology, 19, 2, pp. 1-7, (1990)
  • [3] Jiang C., Yu Q., Spherical shell destabilization hypothesis of coal and methane outburst mechanism, Safety in Coal Mines, 2, pp. 17-25, (1995)
  • [4] Li X., Lin B., Status of research and analysis on coal and gas outburst mechanism, Coal Geology & Exploration, 38, 1, pp. 7-13, (2010)
  • [5] Xu G., Gu J., Yuan W., Et al., Model test study on explosive resistance of intercross bolted rock mass structure in underground space, Chinese Journal of Underground Space and Engineering, 10, 5, pp. 1078-1085, (2014)
  • [6] Wang H., Zhang Q., Yuan L., Et al., Coal and gas outburst simulation system based on CSIRO model, Chinese Journal of Rock Mechanics and Engineering, 34, 11, pp. 2301-2308, (2015)
  • [7] Jiang C., Prediction study of three dynamic force phenomena under the condition of uncovering coal seam in cross cut, Journal of China Coal Society, 22, 4, pp. 406-409, (1997)
  • [8] Cai C., Experimental study on 3D simulation of coal and gas outbursts, Journal of China Coal Society, 29, 1, pp. 66-69, (2004)
  • [9] Xu J., Tao Y., Yin G., Et al., Development and application of coal and gas outburst simulation test device, Chinese Journal of Rock Mechanics and Engineering, 27, 11, pp. 2354-2362, (2008)
  • [10] Yuan R., Li H., Development and application of simulation test apparatus for gassy coal dynamic failure, Journal of China Coal Society, 38, pp. 117-123, (2013)
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