Numerical investigation of the mechanical behavior of rock under confining pressure and pore pressure

被引：0

作者：

Tang, C.A. ^{[1
,2
]}

Xu, T. ^{[1
,2
]}

Yang, T.H. ^{[1
]}

Liang, Z.Z. ^{[1
]}

机构：

[1] Ctr Rock Instability/Seiscimity Res, Northeastern University

[2] Res Ctr Numer Tests on Mat Failure, Dalian University

来源：

International Journal of Rock Mechanics and Mining Sciences | 2004年 / 41卷 / SUPPL. 1期

关键词：

Acoustic emission; Confining pressure; Mechanical behaviours; Numerical simulation; Pore pressure; RFPA;

D O I：

10.1016/j.ijrmms.2004.03.063

中图分类号：

学科分类号：

摘要：

Many of the important problems of rock engineering are concerned with mechanical behaviours of rock where the internal rock structure sustains pore pressure and confining pressure from the surrounding rocks. A basic understanding of rock mechanical properties under confining pressure and pore pressure conditions is of great importance in rock mechanics and rock engineering. In this paper, the newly-developed pore-pressure incorporated Rock Failure Process Analysis model (RFPA) is briefly outlined at first. Then a series of numerical tests on rock under different constant confining pressure and pore pressure are conducted to illustrate how the overall macroscopic responses and mechanical properties of brittle heterogeneous rocks under different confining pressure and pore pressure were revealed by RFPA code. In addition, through the modelling of acoustic emission sequences in rock progressive failure, the AE characteristics and the correlation between AE events and stress-strain curves under different confining pressure and pore pressure were also investigated. From the numerically simulated results, it can be possible to analyze large-scale practical rock engineering problems such as mining induced seismicit ies and rock bursts. © 2004 Elsevier Ltd.

引用

页码：2A041 / 6

共 9 条

[1]

Cox S.J.D., Meredith P.G., Microcrack formation and material softening in rock measured by monitoring acoustic emissions, Int J Rock Mech Min Sci Geomech Abstr, 30, 1, pp. 11-24, (1993)

[2]

Lockner D.A., Byerlee J.D., Kuksenko V., Et al., Quasi-static fault growth and shear fracture energy in granite, Nature, 350, 7, pp. 39-42, (1991)

[3]

Tang C.A., Numerical simulation of progressive rock failure and associated seismicity, Int. J. Rock Mech. Min. Sci., 34, pp. 249-262, (1997)

[4]

Tang C.A., Kaiser P.K., Numerical Simulation of Cumulative Damage and Seismic Energy Release in Unstable Failure of Brittle Rock-Part I. Fundamentals, Int. J. Rock Mech. & Min. Sci., 35, 2, pp. 113-121, (1998)

[5]

Tang C.A., Tham L.G., Liu H.Y., Et al., Numerical Tests on Micro-Macro Relationship of Rock Failure under Uniaxial Compression, Part I: Effect of heterogeneity, Int. J. Rock Mech. Min. Sci., 37, pp. 555-569, (2000)

[6]

Tang C.A., Lin P., Wong R.H.C., Et al., Analysis of crack coalescence in rock-like materials containing three flaws-Part II: Numerical approach, Int. J. Rock Mech. Min. Sci., 38, pp. 925-939, (2001)

[7]

XU T., Tang C.A., Zhang Z., Et al., Theoretical, experimental and numerical studies on deformation and failure of brittle rock in uniaxial compression, Journal of Northeastern University, 24, 1, pp. 87-90, (2003)

[8]

Weibull W., A statistical distribution function of wide applicability, Journal of Applied Mechanics, pp. 293-297, (1951)

[9]

Wong R.H.C., Lin P., Tang C.A., Et al., Analysis of crack coalescence in rock-like materials containing three flaws-Part I□ experimental approach□, Int. J. Rock Mech. Min. Sci, 38, pp. 909-924, (2001)

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