Rocks mechanical behavior

Xu, E, Xu, WY, Liu, K, Chen, X.P., Wang, D.K. Forecasting of rock mechanical behaviors based on PSO-SVM model. Chinese Journal of Rock Mechanics and Engineering 28(S2) 3699-3704. (in Chinese). 

To understand and predict the effects of coupled processes in all these practical problems, models are being developed that are capable of simulating coupled thermo-hydro-mechanical (THM) processes. The term coupled processes implies that one process affects the initiation and progress of another. Thus, the rock mass behavior cannot be predicted with confidence by considering each process individually or in simple succession. Previously, binary TM and TH couplings have been studied in the context of, for example, rock... 

Abstract This paper presents a model for the simulation of two phase flow phenomena in deformable fractured rocks. The main problem is that gas pressure may play an important role on the mechanical behavior specially if discontinuities exist or develop. Fracture aperture changes and fracture failure are accounted by the model. Aperture of the discontinuity is used as the main variable for permeability and capillary pressure variations. Injection pressures that show peak values before steady state regime is attained are obtained with the model as shown in some simulations performed. 

Liu Yachen, Cai Yaoqing., Liu Quansheng and Wu Yushan, 2001, Thermal-hydraulic-mechanical coupling constitutive relation of rock mass fracture interconnectivity, Chinese J. Geotech. Eng., Vol.23, No.2, pp. 196-200 Liu Yachen, Cai Yongqing, Liu Quansheng and Wu Yushan, 2002, Study on mechanical behavior of jointed rock mass affected by temperature and saturated water, Chinese J. Rock Mech. Eng., Vol.21,No.2, pp.233-237... 

Chijimatsu, M., Fujita, T., Sugita, Y., Amemiya, K. and Kobayashi, A. 2001. Field experiment, results and THM behavior in the Kamaishi mine experiment. Int.J. of Rock Mechanics and Mining Sciences, Vol. 38, No. 1, pp.67-78 Jing, L., Stephansson, O., Tsang, C-F. and Kautsky, F. 1996. DECOVALEX -Mathematical Models of Couples T-H-M Processes for Nuclear Waste Repositories. Executive Summary for Phases I, II and HI, SKI Report 96 58. 

Han, G., Dusseault, M.B. Cook, J. Oct.2002. Quantifying rock capillary strength behavior in unconsolidated sandstones, SPE 78170, the SPE/ISRM Rock Mechanics Conference, Irving, TX, USA. 

Hartmut Kem, Jorg H. Fanke. The effect of temperature on the chemical and mechanical behavior of camallite halite rock[A], The Mechanical Behavior of Salt, Proceedings of the First Conference[C], Edited by H.Reginald Hardy, Jr. Germany Trans Tech Publication, 180 (1981). 

Qian, M.G. Zhao, G.J. 1987. The behavior of the main roof fracture in long wall mining and its effect on roof pressure. Rock Mechanics (Proceedings of the 28th US. Symposium) 1123-1128. 

The need for FT-NQR is clearly demonstrated by the examples given in Table 3. The growing interest in understanding the behavior of solids has provided an impetus for analytical techniques suitable for use with solid state systems. Particular emphasis has been directed at natural systems, such as minerals, and military and security applications. Furthermore, the possibility of measuring in-situ strain is of major interest to the rock mechanics community. 

Ambraseys, N. R., Hendron, A. J. (1968). Dynamic behavior of rock masses in rock mechanics in engineeringpractice (K. G. Stagg O. C. Zien-kievicz, Eds.). New York John Wiley and Sons. 

Mclamore, R., Gray, K. E. (1967). Mechanical behavior of anisotropic sedimentary rocks. Journal of Engineering for Industry, 89, 62-61. 

Gao, H.B., Liang, W.G., Xu, S.G., et al. 2011. Study of mechanical behavior response of salt rock under cyclic loading. Chinese Journal of Rock Mechanics and Engineering 30(Supp. 1) 2617-2623. 

Zhang Chunsheng., Chen Xiangrong. Hou Jing, et al. 2010. Study of mechanical behavior of deep-buried marble at Jin Ping II hydropower station (in Chinese). Chinese Journal of Rock Mechanics and Engineering 29(10) 1999-2009. 

Engineering geo-mechanics of rock-mass is a science which studies the mechanical behavior of rock-mass. It is the rock-mass engineering geology theory developed in china. 

Deformation and strength are the basic mechanical behaviors of rock-mass. The behaviors of rock-mass under high stress, normal stress and low pressure environment are significantly different. 

Hydro-mechanical coupling in fractured rock mass is an important issue for many rock mechanics and hydrogeology apphcations (Rutqvist Stephansson 2003). Various numerical methods, i.e. distinct element method (DEM), finite element method (FEM), finite difference method (FDM), etc, are widely used to simulate and analyze the rock hydro-mechanical coupling behaviors. UDEC is DEM software and can be used for modeling the hydro-mechanical coupling behavior of fractured rock masses. 

Kwasniewski, A.M. 1993. Mechanical Behavior of anisotropic rocks. Comprehensive rock engineering, 1 285-312. Pergamon Press, Oxford. 

Anisotropic strength and deformational behavior of Himalayan schists. Int. Journal of Rock Mechanics and Mining Sciences 40 3-23. 

Written standards represent the attempt to standardize the historical experience of individuals accumulated over time. Some standards reflect scientific theories about gas behavior, combustion, or rock mechanics. Standards like 30 CFR 75(301-5), for example, specify the maximum concentrations of explosive gases that can accumulate in a section. Other standards specify general procedures like air sampling without citing specific techniques or codes of practice [30 CFR 75(301-6)]. Some standards specify testing meth-t)ds developed by scientific testing institutes like American Society for Testing and Materials (ASTM) [30 CFR 75(302-3)]. And some specify the sequence of procedures that must occur in pre-shift examinations and inspections [30 CFR 75(303)]. 

The next edition of ASCE 41 - ASCE/SEI 41-13 (ASCE 2014) - has just been published and expands the remit of ASCE 41 to include the multitiered seismic assessment approach previously found in ASCE/SEI 31-03 (ASCE 2003). The nonlinear response history analysis procedures have been expanded somewhat, reflecting significantly increased application of this method and the availability of research efforts such as Deierlein et al. 2010 NEHRP Consultants Joint Venture 2010, since the publication of ASCE/SEI 41-06. Nonlinear behavior of force-controlled actions is now permitted to allow explicit modeled of post-failure redistribution following brittle failure. Finally, and importantly for this entry, the unreinforced masonry (URM) wall provisions have been updated major changes are that bed-joint sliding is now considered a deformation-controlled action, while the pier rocking mechanism is now limited to lower axial load ratios and for piers at least 6" in thickness. 

Zangerl C, Eberhardt E, Schdnlaub H, Anegg J (2007) Deformation behavior of deep-seated rockslides in crystalline rock. In Rock mechanics proceedings of the 1st Canada-US rock mechanics symposium, Vancouver, 27-31 May 2007. doi 10.1201/... 

C. A. B>2i2rL, Applied Sa/t-Roek Mechanics 1, The In Situ Behavior of Salt Rocks, Elsevier Science, Inc., New York, 1977. 

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