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آی اس آی پیپر

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دانلود رایکان مقاله انگلیسی ISI با موضوع تاثیر تنش اصلی میانگین بر رفتار شکست سنگ



عنوان فارسی مقاله:

تاثیر تنش اصلی میانگین بر رفتار شکست سنگ؛ مطالعه عددی


عنوان انگلیسی مقاله:

The influence of the intermediate principal stress on rock failure behaviour: A numerical study


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1. Introduction
The study of rock failure processes under complex stress conditions is an important subject in rock mechanics. Moreover, with geotechnical engineering extending to greater depth, the stress environment and geology conditions become more and more complex. The stress state in 3D space is defined by three mutually perpendicular principal stress components (σ1, σ2, σ3). Rock will exhibit different failure conditions under different stress paths. For example, with a certain minimum principal stress, researchers found that the strength of some rock increases and then decreases with the increase of intermediate principal stress. In the experimental context, many researchers (e.g. Mogi, 1979; Xu and Geng, 1985, 1989; Li and Xu, 1991; Chang and Haimson, 2000; Haimson and Chang, 2000, 2002; Chen and Feng, 2006; Mogi, 2007; Yang and Liu, 2007; Liu and Cao, 2008) conducted a large number of true triaxial tests on different rock types such as Dunham dolomite, Solnhofen limestone, granite etc., to study their behaviour under triaxial stress conditions. They found that the strength increases and then decreases with the increase of σ2.In the theoretical context, many failure criteria (Colmenares and Zoback, 2002), such as Mohr–Coulomb, Drucker–Prager, Weibols and Cook (Wiebols and Cook, 1968), modified Wiebols and Cook (Zhou, 1994), Hoek and Brown (Hoek and Brown, 1980), Mogi 1967 and Mogi 1971 criteria (Mogi, 2007), modified Lade criterion (Ewy, 1999) etc., have been developed to fit the experimental data.


مطالعه فرآیند شکست سنگ در شرایط تنش پیچیده، یک موضوع مهم در مکانیک سنگ است، اگرچه با مهندسی ژئوتکنیک به عمق بیشتری توسعه داده می شود. تنش محیطی و وضعیت های زمین شناسی بیشتر و بیشتر پیچیده می شوند. وضعیت استرس در فضای 3D توسط سه مولفه استرس اصلی متناوب عمود بر تعریف (σ1، σ2، σ3) تعریف شده است. راک تحت شرایط تنش های مختلف، شرایط شکست مختلف را نشان می دهد. به عنوان مثال، با حداقل استرس اصلی خاص، محققان دریافتند که قدرت برخی از سنگ ها افزایش می یابد و سپس با افزایش استرس اصلی میانه کاهش می یابد. در چارچوب تجربی، بسیاری از محققان (مثلا Mogi، 1979، Xu and Geng، 1985، 1989؛ Li and Xu؛ 1991؛ Chang and Haimson؛ 2000؛ Haimson and Chang؛ 2000؛ 2002؛ Chen & Feng؛ 2006؛ Mogi، 2007. ؛ یانگ و لیو، 2007؛ لیو و کائو، 2008) تعداد زیادی از آزمون های سه گانه واقعی را در انواع سنگ های مختلف مانند دولومیت دانمان، آهک Solnhofen، گرانیت و غیره انجام داده اند تا رفتار آنها را تحت شرایط تنش سه بعدی بررسی کنند. آنها دریافتند که قدرت افزایش می یابد و سپس با افزایش σ2 کاهش می یابد در متون تئوری، معیارهای شکست بسیاری مانند مورکولمب ، دراکر – پراگر ، Weibols & Cook ، اصلاح شده Weibols & Cook ، هوک و براون ، موگی ، اصلاح شده Lade و … برای تطبیق نمودن داده های آزمایش ایجاد شده است.


کلمات کلیدی
The influence of the intermediate principal stress on rock failure ... https://www.sciencedirect.com/science/article/pii/S0013795211002614 by PZ Pan - ‎2012 - ‎Cited by 41 - ‎Related articles Jan 4, 2012 - By using numerical modelling, the phenomenon of the intermediate principal stress effect has been reproduced. ... Because rock is a heterogeneous material, in the study of the effect of polyaxial stress conditions on rock fracturing behaviour, the heterogeneity of rocks should be considered. (PDF) The influence of the intermediate principal stress on rock failure ... https://www.researchgate.net/.../256699746_The_influence_of_the_intermediate_princi... Jun 23, 2018 - The influence of the intermediate principal stress on rock failure ... effect on rock failure behaviour is revealed through a numerical method using ... In this study, both homogeneous and heterogeneous rocks are considered. [PDF]The influence of the intermediate principal stress on rock failure ... iranarze.ir/wp-content/uploads/2017/10/8037-English-IranArze.pdf by PZ Pan - ‎2012 - ‎Cited by 41 - ‎Related articles The influence of the intermediate principal stress on rock failure behaviour: A numerical study. Peng-Zhi Pan a,⁎, Xia-Ting Feng a, J.A. Hudson b a State Key ... Influence of intermediate principal stress on failure mechanism of hard ... https://link.springer.com/article/10.1007/s11771-014-2098-x by S Zhang - ‎2014 - ‎Cited by 1 - ‎Related articles Apr 25, 2014 - Based on particle flow theory, the influences of the magnitude and direction of the ... failure mechanism of hard rock with a pre-existing circular opening were studied... ... rock mechanics intermediate principal stress hard rock with pre-existing ... principal stress on rock failure behavior: A numerical study [J]. Impact Of The Intermediate Principal Stress On Rock Strength ... https://www.onepetro.org/conference-paper/ARMA-04-469 by HF Christensen - ‎2004 - ‎Cited by 9 - ‎Related articles The results of the study confirm that the intermediate principal stress does have ... focused on pre-failure behaviour where the rock is largely intact and elastic, and ... both the conventional and polyaxial tests were used in numerical analysis for ... Effect of the intermediate principal stress on rock failure - Mogi - 1967 ... https://onlinelibrary.wiley.com/doi/abs/10.1029/JZ072i020p05117 by K Mogi - ‎1967 - ‎Cited by 442 - ‎Related articles Effect of the intermediate principal stress on rock failure ... to an experimental study of the effect of the intermediate principal stress σ2 on failure of a ... Strength at failure increases with σ2 by an amount that is proportional to, although ..... Numerical study of failure behaviour of pre-cracked rock specimens under conventional ... Impact of the intermediate principal stress on the ... - AGU Publications https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2001JB000277 by E Fjær - ‎2002 - ‎Cited by 38 - ‎Related articles This impact of the intermediate principal stress indicates that not only the stress level but ... A numerical model has been developed, which incorporates rock ..... are well suited for studying deformation and failure behavior of granular materials. Effect of the intermediate principal stress on rock failure - Mogi - 1967 ... https://onlinelibrary.wiley.com/doi/full/10.1029/JZ072i020p05117 by K Mogi - ‎1967 - ‎Cited by 440 - ‎Related articles Effect of the intermediate principal stress on rock failure .... Influence of specimen height-to-width ratio on the strainburst characteristics of Tianhu granite ... Numerical study of failure behaviour of pre-cracked rock specimens under conventional ... Impact of the intermediate principal stress on the strength of ... https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2001JB000277 by E Fjær - ‎2002 - ‎Cited by 38 - ‎Related articles [1] A numerical model simulating a granular material has been used to study the impact of the ... of the intermediate principal stress on rock strength to the natural variation in experimental tests ..... tion and failure behavior of granular materials. The influence of the intermediate principal stress on rock failure ... https://www.infona.pl/.../bwmeta1.element.elsevier-7dfdebae-4ef0-3396-a468-c36d66... by PZ Pan - ‎2012 - ‎Cited by 40 - ‎Related articles By studying the EPCA3D simulated acoustic emission and complete ... The influence of the intermediate principal stress on rock failure behaviour: A numerical study ... stress effect on rock failure behaviour is revealed through a numerical ...

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