基于一种普适性直接拉伸方法的岩石拉伸测试及问题分析

doi:10.13722/j.cnki.jrme.2022.1156

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Abstract In view of the limitations and difficulties of the existing direct tensile method for testing rock tensile strength，such as high requirements for equipment，complex test process and low success rate of tests，the existing direct tensile method cannot be widely used in rock tensile strength testing. Therefore，based on the concept of “compression to tension”，an universal direct tensile method is proposed which can be performed by the ordinary testing equipment. In order to clarify the feasibility of the direct tensile method proposed in this paper，the Brazilian splitting method，which is recommended internationally，was used as the compared method，and three kinds of rocks such as marble，sandstone and granite were taken as the representatives of metamorphic rock，sedimentary rock and magmatic rock for testing and discussing. The results show that the method is simple and easy to use，and that the test results have good consistency. The direct tensile strength of the three types of rocks is lower than that of the indirect tensile strength，which is consistent with the existing research results. Furthermore，considering the factors potentially affecting the test results，the key factors that should be considered in the further optimization of the method in the future were proposed，such as seam width，seam bottom radian，the column height and bottom thickness，and the ratio of cylinder wall thickness to particle size.

Key words： rock mechanics rock tension direct tension universal approach influencing factors

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	Articles by authors
	LIU Jianfeng1
	LIANG Chao1
	WANG Lu1
	2
	PEI Jianliang1
	DAI Jingjing1
	LU Gongda1
	ZHOU Lulin1
	LIN Hao1

Cite this article:

LIU Jianfeng1,LIANG Chao1,WANG Lu1, et al. Rock tensile testing and problem analysis based on a universal #br# direct tensile approach[J]. , 2023, 42(9): 2140-2147.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.1156 OR http://rockmech.whrsm.ac.cn/EN/Y2023/V42/I9/2140

[12]	OBERT L，WINDES S L，DUV ALL W I. Standardized tests for determining the physical properties of mine rock[R]. USA：Bureau of Mines，1946：27-28.
[10]	何满潮，胡江春，熊伟，等. 岩石抗拉强度特性的劈裂试验分析[J]. 矿业研究与开发，2005，25(2)：12-16.(HE Manchao，HU Jiangchun，XIONG Wei，et al. Splitting test and analysis of rock tensile strength[J]. Mining Research and Development，2005，25(2)：12-16.(in Chinese))
[6]	中华人民共和国行业标准编写组. SL264—2001水利水电工程岩石试验规程[S]. 北京：中国水利水电出版社，2001.(The Professional Standard Compilation Group of the People?s Republic of China. SL264—2001 Specifications for rock tests in water conservancy and hydroelectric engineering[S]. Beijing：China Water Power Press，2001.(in Chinese))
[8]	LI D Y，WONG L N Y. The Brazilian disc test for rock mechanics applications：review and new insights[J]. Rock Mechanics Rock Engineering，2012，46(2)：269-287.
[16]	刘建锋，徐进，杨春和，等. 盐岩拉伸破坏力学特性的试验研究[J]. 岩土工程学报，2011，33(4)：580-586.(LIU Jianfeng，XU Jin，YANG Chunhe，et al. Mechanical characteristics of tensile failure of salt rock[J]. Chinese Journal of Geotechnical Engineering，2011，33(4)：580-586.(in Chinese))
[18]	LIU J F，CHEN L，WANG C P，et al. Characterizing the mechanical tensile behavior of Beishan granite with different experimental methods[J]. International Journal of Rock Mechanics and Mining Sciences，2014，69(7)：50-58.
[4]	ASTM International. Standard test method for splitting tensile strength of intact rock core specimens[S]. West Conshohocken，USA：[s. n.]， 2008.
[14]	HAWKES I，MELLOR M. Uniaxial testing in rock mechanics laboratories[J]. Engineering Geology，1970，4(3)：179-285.
[1]	蔡美峰，何满潮，刘东燕. 岩石力学与工程[M] . 北京：科学出版社，2002：31-35.(CAI Meifeng，HE Manchao，LIU Dongyan. Rock mechanics and engineering[M]. Beijing：Science Press，2002：31-35.(in Chinese))
[11]	张少华，缪协兴，赵海云. 试验方法对岩石抗拉强度测定的影响[J]. 中国矿业大学学报，1999，28(3)：243-246.(ZHANG Shaohua，MIAO Xiexing，ZHAO Haiyun. Influence of test methods on measured results of rock tensile strength[J]. Journal of China University of Mining and Technology，1999，28(3)：243-246.(in Chinese))
[2]	DIEDERICHS M S，KAISER P K. Tensile strength and abutment relaxation as failure control mechanisms in underground excavations[J]. International Journal of Rock Mechanics and Mining Sciences，1999，36(1)：69-96.
[3]	ISRM. Suggested methods for determining tensile strength of rock materials[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1978，15(1)：99-103.
[5]	中华人民共和国国家标准编写组. GB/ T50266—99工程岩体试验方法标准[S]. 北京：中国计划出版社，1999.(The National Standards Compilation Group of the People?s Republic of China. GB/ T50266—99 Standard for tests method of engineering rock masses [S]. Beijing：China Planning Press，1999.(in Chinese))
[7]	喻勇. 质疑岩石巴西圆盘拉伸强度试验[J]. 岩石力学与工程学报，2005，24(7)：1 150-1 157.(YU Yong. Questioning the validity of the Brazilian test for determine tensile strength of rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(7)：1 150-1 157.(in Chinese))
[9]	MATTHEW P A，MARK D S. A review of the tensile strength of rock：concepts and testing[J]. Geotechnical and Geological Engineering，2014，32(2)：525-546.
[13]	FAIRHURST C. Laboratory measurement of some physical properties of rock[C]// The 4th US Symposium on Rock Mechanics(USRMS). Pennsylvania：American Rock Mechanics Association，1961：105-118.
[15]	中华人民共和国行业标准编写组. DL/T 5368—2007水电水利工程岩石试验规程[S]. 北京：中国电力出版社，2007.(The Professional Standard Compilation Group of the People?s Republic of China. DL/T 5368—2007 Code for rock tests of hydroelectric and water conservancy engineering[S]. Beijing：China Electric Power Press，2007.(in Chinese))
[17]	刘建锋，王璐，裴建良，等. 用于直接拉伸试验的岩块试件及岩石直接拉伸试验方法[P]. 中国：104297028 A，2015-01-21.(LIU Jianfeng，WANG Lu，PEI Jianliang，et al. Block specimens for direct tensile tests and rock direct tensile test methods[P]. China：104297028 A，2015-01-21.(in Chinese))
[19]	EBERHARDT E，STIMPSON B，STEAD D. Effects of grain size on the initiation and propagation thresholds of stress-induced brittle fractures[J]. Rock Mechanics and Rock Engineering，1999，3(2)：81-89.