THE ROLE OF THE CHEMICAL ENVIRONMENT IN FRICTIONAL DEFORMATION - STRESS-CORROSION CRACKING AND COMMINUTION

被引：107
作者：
DUNNING, J
DOUGLAS, B
MILLER, M
MCDONALD, S
机构：
[1] Department of Geological Sciences, Indiana University, Bloomington, 47405, IN
来源：
PURE AND APPLIED GEOPHYSICS | 1994年 / 143卷 / 1-3期
关键词：
CHEMICALLY ASSISTED FRACTURE; STRESS CORROSION LIMIT; SUBCRITICAL CRACK PROPAGATION;
D O I：
10.1007/BF00874327
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The roles of chemically assisted crack and fracture propagation and chemically assisted comminution in frictional deformation are evaluated in this study. Double cantilever beam (DCB) crack propagation data are presented which show that the role of pH in chemically assisted fracture, and to a lesser extent the role of ionic concentration are important in stress corrosion cracking. Data on very slow crack growth and the stress corrosion limit are also presented. These data suggest that stress corrosion cracking may play an important role in compound earthquakes and in asperity breakdown in faults. The comminution literature is also reviewed in order to assess the role of chemically assisted comminution in frictional deformation. It appears that chemically assisted comminution may be important at low and high ionic strength because it may reduce the effective viscosity and the shear strength of fault gouge. At intermediate ionic concentration the role of pH, as an agent which enhances crack and fracture propagation, appears to be more important in reducing the coefficient of sliding friction.
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收藏
页码：151 / 178
页数：28
相关论文
共 41 条
[1]  
Anderson O., Grew P., Stress Corrosion Theory of Crack Propagation with Applications to Geophysics, Rev. Geophys. and Space Phys., 15, pp. 77-104, (1977)
[2]  
Atkinson B., A Fracture Mechanics Study of Subcritical Tensile Cracking of Quartz in Wet Environments, Pure and Appl. Geophys., 117, pp. 1011-1024, (1979)
[3]  
Barenblatt G., The Mathematical Theory of Equilibrium Cracks in Brittle Fracture, Adv. Appl. Mechanics, 7, pp. 88-96, (1962)
[4]  
Berner E., Berner B., The Global Water Cycle, (1987)
[5]  
Charles S., Hillig G., Static Fatigue of Glass, J. Appl. Geophys., 29, pp. 1549-1560, (1961)
[6]  
Costin L., A Microcrack Model for the Deformation and Faiure of Brittle Rock, J. of Geophys. Res., 88, pp. 9485-9482, (1983)
[7]  
Das S., Scholz C., Theory of Time Dependent Rupture in the Earth, J. Geophys. Res., 86, pp. 6039-6051, (1981)
[8]  
Dieterich J., Time Dependent Friction and the Mechanics of Stick Slip, Pure and Appl. Geophys., 116, pp. 790-806, (1978)
[9]  
Dunning J., McDonald S., Douglas B., Dintaman C., The Measurement of the Stress Corrosion Limit of Quartz and Glass, Inter. J. Rock Mech., 30, 7, pp. 687-691, (1993)
[10]  
Dunning J., Douglas B., McDonald S., The Role of Kinetic Effects in Static Fatigue of Quartz, Trans. AGU, EOS, 72, (1991)
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