Experimental system for simulating excavation unloading process of rock around roadway by using small cylindrical hollow specimen

被引：0
|
作者：
Hou G. [1 ]
Li X. [1 ]
Zhang Z. [1 ]
Liang H. [1 ]
Zhang J. [1 ]
机构：
[1] School of Mechanics and Civil Engineering, China University of Mining and Technology(Beijing), Beijing
来源：
| 2017年 / Academia Sinica卷 / 36期
基金：
中国国家自然科学基金;
关键词：
Acoustic-acoustic emission; Excavation unloading; Hollow cylinder specimen; Rock mechanics; Test system;
D O I：
10.13722/j.cnki.jrme.2016.1585
中图分类号：
学科分类号：
摘要：
In order to realize the simulation of unloading process of roadway excavation in the laboratory and to obtain the innovative monitoring method, a system that use the cylindrical hollow specimen of rock to simulate the unloading path of the excavation of tunnel rock was developed. The system consists mainly of three independent sub-systems: sub-system I: SAM-3000 microcomputer controlled electro-hydraulic servo rock triaxial test system;sub-system II: the loading and unloading chamber of the hollow cylindrical specimen of rock;sub-system III: Acoustic-Acoustic Emission Integrated Testing System. Through the integration and debugging to the software and hardware of the three subsystems, the indoor simulation of the excavation unloading process of the hollow cylindrical specimen(290 mm in height, 200 mm in outer diameter and 100 to 150 mm in diameter) were obtained. The preliminary results of the excavation unloading test to the hollow cylindrical specimen of rock show that the system can effectively simulate and reproduce the excavation unloading conditions on the rock surrounding roadway and can effectively simulate the deformation, stress distribution and failure mechanism of the rock surrounding roadway under the condition of excavation unloading. © 2017, Science Press. All right reserved.
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页码：2136 / 2145
页数：9
相关论文
共 19 条
  • [1] Zhu W.S., Zhao J., Stability Analysis and Modelling of Underground Excavations in Fractured Rocks, pp. 1-36, (2004)
  • [2] Shen T., Development of geomechanic model experiment techniques, Journal of Yangtze River Scientific Research Institute, 18, 5, pp. 32-36, (2001)
  • [3] Chen A., Gu J., Shen J., Et al., Development and application of multifunctional apparatus for geotechnical model tests, Chinese Journal of Rock Mechanics and Engineering, 23, 22, pp. 3785-3789, (2004)
  • [4] Chen A., Gu J., Shen J., Development and application of multifunctional apparatus for geotechnical engineering model tests, Chinese Journal of Rock Mechanics and Engineering, 23, 3, pp. 372-378, (2004)
  • [5] Jiang Y., Liu W., Zhao Y., Design and development of a new type of triaxial system for roadway model test, Chinese Journal of Rock Mechanics and Engineering, 23, 21, pp. 3727-3731, (2004)
  • [6] Zhang Q., Li S., You C., Et al., Development and application of new type combination 3D geomechanical model test rack apparatus, Chinese Journal of Rock Mechanics and Engineering, 26, 1, pp. 143-148, (2007)
  • [7] Zhu W., Zhang Q., Li Y., Et al., Development of large-scale geomechanical model test system under true 3D loading condition and its applications, Chinese Journal of Rock Mechanics and Engineering, 29, 1, pp. 1-7, (2010)
  • [8] Sun X., He M., Liu C., Et al., Development of nonlinear triaxial mechanical experiment system for soft rock specimen, Chinese Journal of Rock Mechanics and Engineering, 24, 16, pp. 2870-2874, (2005)
  • [9] Yang L., Yang R., Ma J., Et al., Development of a model test system for deep mine construction, Chinese Journal of Rock Mechanics and Engineering, 33, 7, pp. 1424-1431, (2014)
  • [10] Wang B., Zhu J., Wu A., Et al., Experimental study of mechanical properties of Jinping marble under loading and unloading stress paths, Chinese Journal of Rock Mechanics and Engineering, 27, 10, pp. 2138-2145, (2008)
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