Mechanisms of hydraulic fracturing in cohesive soil

Hydraulic fracturing in the soil core of earth-rockfill dams is a common problem affecting the safety of the dams. Based on fracture tests, a new criterion for hydraulic fracturing in cohesive soil was suggested. Using this criterion, the mechanisms of hydraulic fracturing in cubic soil specimens were investigated. The results indicate that the propagation of the crack in a cubic specimen under water pressure occurs in a mixed mode I-II if the crack face is not perpendicular to any of the principal stresses, and the crack most likely to propagate is the one that is perpendicular to the minor principal stress and propagates in mode I.

[1]  James M. Duncan,et al.  LABORATORY STUDY OF HYDRAULIC FRACTURING , 1981 .

[2]  田村 昌仁,et al.  Hydrofracturing pressure of cohesive soils. , 1987 .

[3]  James L. Sherard,et al.  Hydraulic Fracturing in Embankment Dams , 1985 .

[4]  L. Murdoch.  HYDRAULIC FRACTURING OF SOIL DURING LABORATORY EXPERIMENTS. PART 2. PROPAGATION , 1993 .

[5]  Jun-jie Wang,et al.  Experimental study on fracture behavior of a silty clay , 2007 .

[6]  S. Hamoush,et al.  A stiffness derivative technique to determine mixed mode stress intensity factors of rectilinear anisotropic solids , 1993 .

[7]  Luis E. Vallejo.  SHEAR STRESSES AND THE HYDRAULIC FRACTURING OF EARTH DAM SOILS , 1993 .

[8]  F. Lea,et al.  International Commission on Large Dams , 1936, Nature.

[9]  F. W. Eikenberry.  Failure of Teton Dam : a report of findings , 1977 .

[10]  Tom Lunne,et al.  Estimation of hydraulic fracture pressure in clay , 1994 .

[11]  T. K. Hellen.  On the method of virtual crack extensions , 1975 .

[12]  R. Fell,et al.  The statistics of embankment dam failures and accidents , 2000 .

[13]  Fred H. Kulhawy,et al.  Load Transfer and Hydraulic Fracturing in Zoned Dams , 1976 .

[14]  D. Potts,et al.  Analysis of progressive failure and cracking in old British dams , 1996 .

[15]  J. Rice.  A path-independent integral and the approximate analysis of strain , 1968 .

[16]  J. C. Small,et al.  A case study of hydraulic fracturing using finite element methods , 1999 .

[17]  L. Murdoch,et al.  Hydraulic fracturing of soil during laboratory experiments Part 1. Methods and observations , 1993 .

[18]  K. Kaniaru,et al.  Hydraulic fracture in earth and rockfill dams , 1990 .

[19]  Komak Panah Ali,et al.  Two Dimensional Study of Hydraulic Fracturing Criteria in Cohesive Soils , 1994 .

[20]  H. G. Delorenzi.  Energy release rate calculations by the finite element method , 1985 .

[21]  Jun-Gao Zhu,et al.  Investigation to arch action and hydraulic fracturing of core rockfill dam , 2004 .

[22]  L. Murdoch,et al.  Hydraulic fracturing of soil during laboratory experiments Part 3. Theoretical analysis , 1993 .