DISCUSSION ON THE FRACTURE OF LAYERED ROCK MASS BASED ON THE FINITE ELEMENT METHOD

XU Ke; DAI Jun-sheng; FU Xiao-long; REN Qi-qiang; LIU Cong-ning; ZHAO Yun

Volume 21 Issue 3

Sep. 2015

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XU Ke, DAI Jun-sheng, FU Xiao-long, et al., 2015. DISCUSSION ON THE FRACTURE OF LAYERED ROCK MASS BASED ON THE FINITE ELEMENT METHOD. Journal of Geomechanics, 21 (3): 330-340.

Citation:

XU Ke, DAI Jun-sheng, FU Xiao-long, et al., 2015. DISCUSSION ON THE FRACTURE OF LAYERED ROCK MASS BASED ON THE FINITE ELEMENT METHOD. Journal of Geomechanics, 21 (3): 330-340.

Citation:

XU Ke, DAI Jun-sheng, FU Xiao-long, et al., 2015. DISCUSSION ON THE FRACTURE OF LAYERED ROCK MASS BASED ON THE FINITE ELEMENT METHOD. Journal of Geomechanics, 21 (3): 330-340.

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DISCUSSION ON THE FRACTURE OF LAYERED ROCK MASS BASED ON THE FINITE ELEMENT METHOD

1.
School of Geoscience, China University of Petroleum, Qingdao 266580, Shangdong, China
2.
Jidong Oil Exploration and Development Institute, CNPC, Tangshan 063004, Hebei, China
3.
School of education, Guangzhou University, Guangzhou 510006, China

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Received: 2014-12-26
Published: 2015-09-01

Abstract

Abstract

The failure mode and laws of layered rock mass are unique because of its heterogeneity and anisotropy. By conducting uniaxial, biaxial and three axis compression experiments on layered rock mass and analyzing their stress strain curves, different characteristics have been shown. And then with the software ANSYS, finite element numerical simulation have been done. Comparing stress strain curves and maps of simulation as well as combining the theory of fracture, failure modes and rules of layered rock mass in different stress conditions have been summarized. Finally Futai area was taken as an example to validate the result. This research suggests that the orientations of loads and constraints as well as the rock level are the key factors to rock failure. Rock with strong intensity like limestone would be cracked in priority if stress direction is paralleled to rock level, for stress concentration occurs to the strong rock. While rock with weak intensity like mudstone would be cracked first if stress direction is perpendicular to the rock level. Rock compression experiment, numerical simulation and the example of Futai area have verified this law successfully.
- layered rock mass,
- rock compression experiment,
- numerical simulation,
- failure laws

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References(13)

References

[1]	胡明研. 压缩条件下层状复合岩石力学特性研究[D]. 焦作: 河南理工大学, 2009. http://cdmd.cnki.com.cn/Article/CDMD-10460-2010046914.htm HU Yan-ming. Mechanical characteristic study of stratified composite rock under compression[D]. Henan polytechnic university, 2009. http://cdmd.cnki.com.cn/Article/CDMD-10460-2010046914.htm
[2]	黎立云, 宁海龙, 刘志宝, 等.层状岩体断裂破坏特殊现象及机制分析[J].岩石力学与工程学报, 2006, 25(2):3933~3938. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2006S2092.htm LI Li-yun, NING Hai-long, LIU Zhi-bao, et al. Special phenomenon of fracture and mechanism analysis of layered rock mass[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(2):3933~3938. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2006S2092.htm
[3]	刘立, 邱贤德, 黄木坤, 等.层状复合岩石损伤破坏的实验研究[J].重庆大学学报:自然科学版, 1999, 22(4):28~32. http://www.cnki.com.cn/Article/CJFDTOTAL-FIVE199904005.htm LIU Li, QIU Xian-de, HUANG Mu-kun, et al. Experimental study on damage and failure of layered composite rock[J]. Journal of Chongqing University: Natural Science Edition, 1999, 22(4): 28~32. http://www.cnki.com.cn/Article/CJFDTOTAL-FIVE199904005.htm
[4]	许宝田, 阎长虹, 许宏发.三轴试验泥岩应力-应变特性分析[J].岩土工程学报, 2005, 26(6):863~865. http://www.cnki.com.cn/Article/CJFDTOTAL-YTGC20040600R.htm XU Bao-tian, YAN Chang-hong, XU Hong-fa. Triaxial tests on stress-strain of mud stone[J]. Chinese Journal of Geotechnical Engineering, 2005, 26(6): 863~865. http://www.cnki.com.cn/Article/CJFDTOTAL-YTGC20040600R.htm
[5]	戴俊生, 汪必峰, 马占荣.脆性低渗透砂岩破裂准则研究[J].新疆石油地质, 2007, 28(4):393~395. http://www.cnki.com.cn/Article/CJFDTOTAL-XJSD200704003.htm DAI Jun-sheng, WANG Bi-feng, MA Zhan-rong. Research on Cracking Principles of Brittle Low-Permeability Sands[J]. Xinjiang Petroleum Geology, 2007, 28(4): 393~395. http://www.cnki.com.cn/Article/CJFDTOTAL-XJSD200704003.htm
[6]	卢虎胜, 张俊峰, 李世银, 等.砂泥岩间互地层破裂准则选取及在裂缝穿透性评价中的应用[J].中国石油大学学报:自然科学版, 2012, 36(3):14~19. http://www.cnki.com.cn/Article/CJFDTOTAL-SYDX201203002.htm LU Hu-sheng, ZHANG Jun-feng, LI Shi-yin, et al. Best selection among crack criterions to sandstone-mudstone formation and its application to fracture penetration ability evaluation[J]. Journal of China University of Petroleum, 2012, 36(3): 14~19. http://www.cnki.com.cn/Article/CJFDTOTAL-SYDX201203002.htm
[7]	雷宇. 砂、泥岩压缩、回弹、破裂实验与裂缝成因的初步分析[D]. 西安: 西北大学, 2011. http://cdmd.cnki.com.cn/article/cdmd-10697-1011087196.htm LEI Yu. The experiment of compression, rebound and fracturing of sandstone and mudstone and preliminary analysis on origin of cracks[D]. Northwest University, 2011. http://cdmd.cnki.com.cn/article/cdmd-10697-1011087196.htm
[8]	杨仕教, 曾晟, 王和龙.加载速率对石灰岩力学效应的试验研究[J].岩土工程学报, 2005, 27(7):786~788. http://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200507012.htm YANG Shi-jiao, ZENG Sheng, WANG He-long. Experimental analysis on mechanical effects of loading rates on limestone[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(7): 786~788. http://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200507012.htm
[9]	李永盛.加载速率对红砂岩力学效应的试验研究[J].同济大学学报:自然科学版, 1995, 23(3):265~269. http://www.cnki.com.cn/Article/CJFDTOTAL-TJDZ503.010.htm LI Yong-sheng. Experimental analysis on the mechanical effects of loading rates on red sandstone[J]. Journal of Tongji University, 1995, 23(3): 265~269. http://www.cnki.com.cn/Article/CJFDTOTAL-TJDZ503.010.htm
[10]	尹小涛, 葛修润, 李春光, 等.加载速率对岩石材料力学行为的影响[J].岩石力学与工程学报, 2010, 29(S1):2610~2615. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2010S1007.htm YIN Xiao-tao, GE Xiu-run, LI Chun-guang, et al. Influences of loading rates on mechanical behaviors of rock materials[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(S1): 2610~2615. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2010S1007.htm
[11]	商琳, 戴俊生, 贾开富, 等.碳酸盐岩潜山不同级别构造裂缝分布规律数值模拟——以渤海湾盆地富台油田为例[J].天然气地球科学, 2013, 24(6):1260~1267. http://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201306023.htm SHANG Lin, DAI Jun-sheng, JIA Kai-fu, et al. Numerical simulation for the distribution of different levels of tectonic fractures in carbonate buried hills: Taking Futai Oilfield in Bohai Bay Basin as an example[J]. Natural Gas Geoscience, 2013, 24(6): 1260~1267. http://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201306023.htm
[12]	徐素国, 梁卫国, 莫江, 等.软弱泥岩夹层对层状盐岩体力学特性影响研究[J].地下空间与工程学报, 2009, 5(5):878~883. http://www.cnki.com.cn/Article/CJFDTOTAL-BASE200905007.htm XU Su-guo, LIANG Wei-guo, MO Jiang, et al. Influence of weak mudstone intercalated layer on mechanical properties of laminated salt rock[J]. Chinese Journal of Underground Space and Engineering, 2009, 5(5): 878~883. http://www.cnki.com.cn/Article/CJFDTOTAL-BASE200905007.htm
[13]	姜德义, 任涛, 陈结, 等.含软弱夹层盐岩型盐力学特性试验研究[J].岩石力学与工程学报, 2012, 31(9):1797~1803. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201209007.htm JIANG De-yi, REN Tao, CHEN Jie, et al. Experiment study of mechanical characteristics of molded salt rock with weak interlayer[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(9): 1797~1803. http://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201209007.htm