深埋大理岩强度参数变化规律的综合试验研究

doi:10.13722/j.cnki.jrme.2015.1550

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (363 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要深部岩体强度参数的研究相当复杂，与研究尺度、应力状态、应力路径都有关系。以锦屏二级水电站深埋引水隧洞T2b大理岩为研究对象，开展室内标准尺寸岩块岩样、中等尺寸岩石岩样和大尺寸岩体岩样在低–中、中–高、高–极高应力水平下的三轴加、卸载试验，探讨深部岩体强度参数的应力水平效应、应力路径效应和尺寸效应。取得以下成果：(1) 获得室内标准尺寸、中等尺寸和大尺寸大理岩岩样在加、卸载应力路径下低–中、中–高、高–极高应力水平下的10组强度参数；(2) 大理岩抗剪强度参数随应力水平的变化规律基本相同：随着应力水平的提高，值逐渐减小、c值逐渐增大，但是，不同尺寸和不同应力路径下，值和c值随围压应力水平的变化幅度并不相同；(3) 相对加载条件，卸载路径下岩体强度参数值增加，c值减小；(4) 在 50 mm×100 mm至500 mm×500 mm×1 000 mm尺度范围内，大理岩强度参数值的尺寸效应不明显，而c值的尺寸效应显著。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	邬爱清1
	王继敏2
	单治刚3
	范雷1
	周火明1
	周春宏3
	李维树1
	汪斌1

关键词 ：岩石力学, 锦屏二级水电站, 深埋大理岩, 应力水平, 应力路径, 尺寸效应, 强度参数

Abstract：The study on the strength parameters of deep rock mass is complicated and difficult. The strength parameters have close relationships with the sample sizes，stress states and loading paths. A series of triaxial tests are carried out to study the strength parameters and their variations characteristics of T2b marbles from the deeply located intake tunnel of Jinping II Hydropower Station，including the loading and unloading triaxial tests of different size samples in laboratory and in situ with low-middle，middle-high and high-very high confining stresses. Following results can be noted. Firstly，test results of ten sets of different kinds of mentioned triaxial tests on the strength parameters are listed in the paper as to show the effects of confining stress magnitude，stress loading and unloading path，and sample size on strength characteristics. Secondly，the variation characteristics of the strength parameters of T2b marbles show a consistent variation tendency when the confining stress magnitude changed：the value of decreases and the value of c increases with increase of confining stress magnitude，but the ranges of variation of the and c values are not in consistency with different loading paths and different sample sizes. Thirdly，compared to loading condition，the unloading path will lead to a higher value of the strength parameter and a lower value of parameter c. At last，The size effect of the strength parameter of the marbles in the scale from 50 mm×100 mm to 500 mm×500 mm×1 000 mm is not obvious，but the size effect of the strength parameter c is significant.

Key words： rock mechanics Jinping II hydropower plant deep marbles stress level stress path size effect strength parameters

引用本文:

邬爱清1，王继敏2，单治刚3，范雷1，周火明1，周春宏3，李维树1，汪斌1. 深埋大理岩强度参数变化规律的综合试验研究[J]. 岩石力学与工程学报, 2016, 35(9): 1740-1746.
WU Aiqing1，WANG Jimin2，SHAN Zhigang3，FAN Lei1，ZHOU Huoming1，ZHOU Chunhong3，LI Weishu1，WANG Bin1. Experimental study of strength parameters and their variation characteristics of deep marbles. , 2016, 35(9): 1740-1746.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2015.1550 或 http://www.rockmech.org/CN/Y2016/V35/I9/1740

[1]	王思敬. 中国岩石力学与工程的世纪成就与历史使命[J]. 岩石力学与工程学报，2003，22(6)：867-871.(WANG Sijing. Century achievement and new historical mission of rock mechanics and engineering in China[J]. Chinese Journal of Rock Mechanics and Engneering，2003，22(6)：867-871.(in Chinese))
[3]	周宏伟，谢和平，左建平. 深部高地应力下岩石力学行为研究进展[J]. 力学进展，2005，35(1)：91-99.(ZHOU Hongwei，XIE Heping，ZUO Jianping. Developments in researches on mechanical behaviors of rocks under the condition of high ground pressure in the depths[J]. Advances in Mechanics，2005，35(1)：91-99.(in Chinese))
[10]	汪斌，朱杰兵，严鹏，等. 大理岩损伤强度的识别及基于损伤控制的参数演化规律[J]. 岩石力学与工程学报，2012，31(增2)：3 967-3 973.(WANG Bin，ZHU Jiebing，YAN Peng，et al. Damage strength determination of marble and its parameters evaluation based on damage control test[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(Supp.2)：3 967-3 973.(in Chinese)) " target="_blank">
[12]	刘立鹏，汪小刚，贾志欣，等. 锦屏二级水电站大理岩复杂加卸载应力路径力学特性研究[J]. 岩土力学，2013，34(8)：2 287-2 293. (LIU Lipeng，WANG Xiaogang，JIA Zhixin，et al. Experiment study of marble mechanical properties of Jinping II hydropower station under complex loading and unloading conditions[J]. Rock and Soil Mechanics，2013，34(8)：2 287-2 293.(in Chinese)) " target="_blank">
[15]	中华人民共和国国家标准编写组. GB 50287—2006水力发电工程地质勘查规范[S]. 北京：中国计划出版社，2008.(The National Standards Compilation Group of People′s Republic of China. GB 50287—2006 Code for hydropower engineering geological investigation[S]. Beijing：China Planning Press，2008.(in Chinese)) " target="_blank">
[8]	汪斌，朱杰兵，邬爱清. 锦屏大理岩加、卸载应力路径下力学性质试验研究[J]. 岩石力学与工程学报，2008，27(10)：2 138-2 145. (WANG Bin，ZHU Jiebing，WU Aiqing，et al. Experimental study on mechanical properties of Jinping marble under loading and unloading stress paths[J]. Chinese Journal of Rock Mechanics and Engineering，2008， 27(10)：2 138-2 145.(in Chinese)) " target="_blank">
[2]	钱七虎. 非线形岩石力学的新进展——深部岩体力学的若干关键问题[C]// 第八次全国岩石力学与工程学术会议论文集. 北京：科学出版社，2004：10-17.(QIAN Qihu. The current development of nonlinear rock mechanics：the mechanics problems of deep rock mass[C]// Proceedings of the 8th National Conference on Rock Mechanics and Engineering. Beijing：Science Press，2004：10-17.(in Chinese)) " target="_blank">
[4]	邬爱清，朱杰兵. 深部岩石工程力学特性及地应力测试研究综述[J]. 长江科学院院报，2014，31(10)：43-50.(WU Aiqing，ZHU Jiebing. A review of rockmass researches on mechanical properties of deep engineering and geo-stress measurement[J]. Journal of Yangtze River Scientific Research Institute，2014，31(10)：43-50.(in Chinese))
[5]	高春玉，徐进，何鹏，等. 大理岩加卸载力学特性的研究[J]. 岩石力学与工程学报，2005，24(3)：456-460.(GAO Chunyu，XU Jin，HE Peng，et al. Study on mechanical properties of marble under loading and unloading conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(3)：456-460.(in Chinese))
[14]	李维树，黄书岭，丁秀丽，等. 中尺寸岩样真三轴试验系统研制与应用[J]. 岩石力学与工程学报，2012，31(11)：2 197-2 203.(LI Weishu，HUANG Shuling，DING Xiuli，et al. Development of ture triaxial experiment system for middle sized rock sample and its applications[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(11)：2 197-2 203.(in Chinese)) " target="_blank">
[6]	李宏哲，夏才初，闫子舰，等. 锦屏水电站大理岩在高应力条件下的卸荷力学特性研究[J]. 岩石力学与工程学报，2007，26(10)：2 104-2 109.(LI Hongzhe，XIA Caichu，YAN Zijian，et al. Study on marble unloading mechanical properties of Jinping hydropower station under high geo-stress conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(10)：2 104-2 109.(in Chinese)) " target="_blank">
[7]	陈卫忠，刘豆豆，杨建平，等. 大理岩卸围压幂函数型Mohr强度特性研究[J]. 岩石力学与工程学报，2008，27(11)：2 214-2 220. (CHEN Weizhong，LIU Doudou，YANG Jianping，et al. Power function based Mohr strength criterion for marble with unloading confining pressures[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(11)：2 214-2 220.(in Chinese)) " target="_blank">
[9]	汪斌，朱杰兵，邬爱清，等. 高应力下岩石非线性强度特性的试验验证[J]. 岩石力学与工程学报，2010，29(3)：542-548.(WANG Bin，ZHU Jiebing，WU Aiqing，et al. Experimental validation of nonlinear strength property of rock under high geo-stress[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(3)：542-548.(in Chinese))
[11]	李新平，肖桃李，汪斌，等. 锦屏二级水电站大理岩不同应力路径下加卸载试验研究[J]. 岩石力学与工程学报，2012，31(5)：882-888.(LI Xinping，XIAO Taoli，WANG Bin，et al. Experimental study on Jinping II hydropower station marble under loading and unloading stress paths[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(5)：882-888.(in Chinese))
[13]	周火明，单治钢，李维树，等. 深埋隧洞大理岩卸载路径真三轴强度参数研究[J]. 岩石力学与工程学报，2012，31(8)：1 524-1 529. (ZHOU Huoming，SHAN Zhigang，LI Weishu，et al. Study of true triaxial strength parameters in unloading path of marbles in deep tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(8)：1 524-1 529.(in Chinese)) " target="_blank">