真三轴应力下锦屏大理岩长期强度确定方法

doi:10.13722/j.cnki.jrme.2022.0644

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Abstract Long-term strength is crucial for studying the time-dependent mechanical properties of deep engineering rock masses. Based on the anisotropic time-dependent fracture characteristics of hard rock induced by true triaxial stresses，the steady-state creep rate method for determining the long-term strength of Jinping marble was proposed in this paper，in which the stress when the steady-state creep rates in the directions of and are equal is determined as the long-term strength of the rock. In addition，the long-term strength of Jinping marble was calculated by the isochronous curve method，the transition creep method，and the steady-state creep rate method，respectively. The results show that transition creep method is not suitable for solving the long-term strength of Jinping marble under true triaxial stress. It also shows that the isochronous curve method can only obtain the long-term strength range of Jinping marble under true triaxial stress and its accuracy relies on the stress increment selected by multistage creep loading. And the long-term strength of Jinping marble under true triaxial stresses can be accurately obtained by steady-state creep rate method，which proves the correctness and reliability of this method.

Key words： rock mechanics true triaxial stress hard rock steady creep rate long-term strength

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	Articles by authors
	ZHAO Jun
	JIANG Mengfei
	FAN Chen
	WANG Jiarong

Cite this article:

ZHAO Jun,JIANG Mengfei,FAN Chen, et al. Determination method of long-term strength of Jinping marble under true triaxial stress#br#[J]. , 2023, 42(S1): 3324-3330.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.0644 OR https://rockmech.whrsm.ac.cn/EN/Y2023/V42/IS1/3324

[1]	谢和平. 深部岩体力学与开采理论[C]// 2018年中国地球科学联合学术年会论文集. [S. l.]：[s. n.]，2018：14.(XIE Heping. Deep rock mass mechanics and mining theory[C]// Proceedings of 2018 China Geoscience Association Annual Conference. [S. l.]：[s. n.]，2018：14. (in Chinese))
[2]	孙钧. 岩石流变力学及其工程应用研究的若干进展[J]. 岩石力学与工程学报，2007，26(6)：1 081-1 106.(SUN Jun. Rock rheological mechanics and its advance in engineering applications[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(6)：1 081- 1 106.(in Chinese))
[3]	SZCZEPANIK Z，MILNE D，KOSTAKIS K，et al. Long term laboratory strength tests in hard rock[C]// Proceedings of the 10th Congress of the International Society for Rock Mechanics. [S. l.]： [s. n.]，2003：1 179-1 184.
[4]	ZHAO J，FENG X T，YANG C Y，et al. Study on time-dependent fracturing behaviour for three different hard rock under high true triaxial stress[J]. Rock Mechanics and Rock Engineering，2021， 54(3)：1 239-1 255.
[5]	BRANTUT N，HEAP MJ，MEREDITH PG，et al. Time-dependent cracking and brittle creep in crustal rocks：a review[J]. Journal of Structural Geology，2013，52(5)：17-43.
[6]	MARTIN CD，CHANDLER NA. The progressive fracture of lac du bonnet granite[J]. International Journal of Rock Mechanics and Mining Science and Geomechanics Abstracts，1994，31(6)：643-659.
[7]	吴绵拔. 加载速率对岩石抗压和抗拉强度的影响[J]. 岩土工程学报，1982，4(2)：97-106.(WU Mianba. The effect of loading rate on
	the compressive and tensile strengths of rocks[J]. Chinese Journal of Geotechnical Engineering，1982，4(2)：97-106.(in Chinese))
[8]	崔旋，佘成学. 推断岩石长期强度的黏塑性应变率法研究[J]. 岩石力学与工程学报，2011，30(增2)：3 899-3 904.(CUI Xuan，SHE Chengxue. Study of viscoplastic strain rate method to quickly determine long-term strength of rock[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(Supp.2)：3 899-3 904.(in Chinese))
[9]	张玉，金培杰，徐卫亚，等. 坝基碎屑岩三轴蠕变特性及长期强度试验研究[J]. 岩土力学，2016，37(5)：1 291-1 300.(ZHANG Yu，JIN Peijie，XU Weiya，et al. Experimental study of triaxial creep behavior and long-term strength of clastic rock in dam foundation[J]. Rock and Soil Mechanics，2016，37(5)：1 291-1 300.(in Chinese))
[10]	张清照，沈明荣，丁文其. 锦屏绿片岩力学特性及长期强度特性研究[J]. 岩石力学与工程学报，2012，31(8)：1 642-1 649.(ZHANG Qingzhao，SHEN Mingrong，DING Wenqi. Study of mechanical properties and long-term strength of Jinping green schist[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(8)：1 642- 1 649.(in Chinese))
[11]	李良权，徐卫亚，王伟，等. 基于流变试验的向家坝砂岩长期强度评价[J]. 工程力学，2010，27(11)：127-136.(LI Liangquan，XU Weiya，WANG Wei，et al. Estimation of long-term strength for Xiangjiaba sandstone based on rheological test[J]. Engineering Mechanics，2010，27(11)：127-136.(in Chinese))
[12]	张龙云，张强勇，李术才，等. 硬脆性岩石卸荷流变试验及长期强度研究[J]. 煤炭学报，2015，40(10)：2 399-2 407.(ZHANG Longyun，ZHANG Qiangyong，LI Shucai，et al．Unloading rheological tests of hard brittle rock and its long-term strength analysis[J]. Journal of China Coal Society，2015，40(10)：2 399-2 407.(in Chinese))
[13]	崔希海，付志亮. 岩石流变特性及长期强度的试验研究[J]. 岩石力学与工程学报，2006，25(5)：1 021-1 024.(CUI Xihai，FU Zhiliang. Experimental study on rheology properties and long-term strength of rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(5)：1 021-1 024.(in Chinese))
[14]	刘新喜，李盛南，周炎明，等. 高应力泥质粉砂岩蠕变特性及长期强度研究[J]. 岩石力学与工程学报，2020，39(1)：138-146.(LIU Xinxi，LI Shengnan，ZHOU Yanming，et al. Study on creep behavior and long-term strength of argillaceous siltstone under high stresses[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(1)：138-146.(in Chinese))
[15]	FENG X T，ZHAO J，ZHANG X W，et al. A novel true triaxial apparatus for studying the time-dependent behaviour of hard rocks under high stress[J]. Rock Mechanics and Rock Engineering，2018，51(9)：2 653-2 667.
[16]	FENG X T，YOUNG R P，REYES-MONTES J M，et al. ISRM suggested method for in situ acoustic emission monitoring of the fracturing process in rock masses[J]. Rock Mechanics and Rock Engineering，2019，52(5)：1 395-1 414.
[17]	ZHAO J，FENG X T，YANG C X，et al. Differential time-dependent fracturing and deformation characteristics of Jinping marble under true triaxial stress[J]. International Journal of Rock Mechanics and Mining Sciences，2021，138：1-17.