The Strength Effect of Pre-Cracked Rocks at Different Angles

Ke Min Wei; Jia Quan Hu; Zhi Hao Zheng; You Ling Fang

doi:10.4028/www.scientific.net/AMM.522-524.1414

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 522-524The Strength Effect of Pre-Cracked Rocks at...

The Strength Effect of Pre-Cracked Rocks at Different Angles

Abstract:

In this paper pre-cracked rock is used to study the strength affect by the coal rock internal fissures, through uniaxial compression tests to observe the different perspectives cracks on rock strength by using the precast specimens. The experimental results show that: the strength of specimens with crack angle increases, decreases and then increases, till reaches a maximum at 90°. Based on the force divided, destruction of different angles of prefabricated crack growth path can be divided into: shear failure, tensile failure and tensile shear composite damage.

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Periodical:

Applied Mechanics and Materials (Volumes 522-524)

Pages:

1414-1418

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.522-524.1414

Citation:

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Online since:

February 2014

Authors:

Ke Min Wei*, Jia Quan Hu, Zhi Hao Zheng, You Ling Fang

Keywords:

Fissure Angle, Mining Engineering, Peak Strength, Prefabricated Fissures

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* - Corresponding Author

References

[1] WANG Guoyan. LI Shuchen. YANG Lei. Investigation on the damage-fractured process of single fractured rock [J]. Journal of Liaoning Technical University (Natural Science Edition), 2009, 28(04): 581-584.

Google Scholar

[2] Hu Hailang. Huang Qiufeng. Li Jian-lin. Study on Crack-Tip Propagation Characteristic of Rock Mass [J]. Water Power, 2007, 33(07): 33-35.

Google Scholar

[3] WANG Guoyan, YU Guangming, SONG Chuanwang. Influence of initial crack geometrical properties on rock crack propagation [J]. Journal of Liaoning Technical University (Natural Science Edition), 2011, 30(05): 681-684.

Google Scholar

[4] Liu Xiaomei, Liu yi-hua, Liang Yongcheng. Maximum circumferential stress criterion of brittle fracture for V-notch. Journal of Hefei University of Technology (Natural Science), 2004, 27 (09): 1043-1046.

Google Scholar

[5] LIU Yihua, CUI Shuwen, CHEN Jiguang. Maximum circumferential stress criterion of brittle fracture at the interface edge of bonded materials[J]. Journal of Hefei University of Technology (Natural Science), 2007, 30(02): 200-202.

Google Scholar