›› 2013, Vol. 34 ›› Issue (S1): 307-312.

• Geotechnical Engineering • Previous Articles     Next Articles

Research on fractal characteristics of deformation monitoring data’s box dimension of underground caverns

ZOU Jing1, 2，LI Zhong-kui1, 2   

  1. 1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China； 2. Department of Hydraulic and Hydropower Engineering, Tsinghua University, Beijing 100084, China
  • Received:2012-09-14 Online:2013-08-30 Published:2014-06-09

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Abstract: During processing of section deformation’s convergent data of large underground cavern group engineering, obvious regularity is found at degree of fluctuation of the time history curve. Therefore, one-dimensional box dimension is introduced to quantitative description of this feature; and then relevant mechanical meaning of properties of surrounding rock is discussed based on the testing calculation results. Furthermore, the index is used to compare variation of the results of different monitoring cross-sections; and the corresponding relationship between integrity of rock and box dimension is confirmed. Through analyzing the relationship of various sections’ spatial locations and their box dimension values, the evolution tendency of rock’s integrity on the whole region is drawn. Finally, validity of the paper’s inference is proved by surrounding rock conditions which is revealed by subsequent excavation.

Key words: box dimension, fractal, deformation monitoring data, underground cavern

CLC Number: 

  • TU91
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