›› 2014, Vol. 35 ›› Issue (S2): 156-161.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Linear optimization method for shear strength parameters of rock mass

LI Qian-qian1, 2, 3, 4, HUANG Dong1, 2, QIAO Jian-ping1, 2, CUI Zhong-xing4   

  1. 1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;2. Kety Laboratory of Mountain Hazards and Surface Process, Chengdu 610041, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China; 4. Faculty of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an 710048, China
  • Received:2014-03-04 Online:2014-10-31 Published:2014-11-12

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Abstract: In light of the importance of study of mechanical parameters of rock mass structural plane, based on a large number of practical projects and the basic statistical principle about error analysis, the applicabilities of least square method and M - estimation method for calculating the structural plane shear strength parameters, are studied. The results show that, when the gross errors are uncertain, it is hard to find the regularity that the two methods are more suitable for some certain condition. Because the data all have the given engineering characteristics, in order to make results more accurate, a new method based on the above two methods is proposed; and it is applied to calculate shear strength parameters of Lijiahe reservoir.

Key words: least square method, M - estimation comparison, direct shear test, optimization method

CLC Number: 

  • TU 452
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