侧限下原状碎裂岩样压缩变形响应的解析计算原理与方法

doi:10.13722/j.cnki.jrme.2022.0984

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (48340 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Cataclastic rocks are a special kind of weak rock mass developed in a strong tectonic zone，whose engineering mechanical properties are greatly influenced by disturbance or weak constraint. However，it is difficult to obtain undisturbed specimens of cataclastic rocks and to accurately measure its mechanical properties in the laboratory. Therefore，the confined compression test of undisturbed specimens which are obtained by investigating the in-situ undisturbed sampling devices and methods is done. The calculation model is established on the assumption of the linear axial shear stress along cylinder. Subsequently，the analytical solutions of deformation parameters under high stress by confined compression are derived. Moreover，the confined compression numerical test and the in-situ bearing plate test are conducted. The results show that：The variation range of acoustic velocity between specimens and sampling points is less than 5%，thus indicating that specimens obtained by steel cylinder devices with blades can basically keep their original structure characteristics. The average differences between calculated values and measured values of axial strain at different heights do not exceed 6.43%，which verifies the rationality of the distribution assumption of axial shear stress in the calculation model. The ratio of in-situ deformation modulus to analytical compression modulus are 0.17 and 0.36 respectively，when the rock pressure are less than and greater than 15.80 MPa. The average differences of comprehensive compression modulus and Poisson?s ratio between the analytical calculation and the numerical solution are 5.68% and 4.18% respectively，which verifies the reliability of the analytical calculation method for the compression deformation response. The research results can provide an effective method for testing the mechanical properties of cataclastic rocks，thus creating theoretical and practical values for the engineering construction of similar areas.

Key words： rock mechanics undisturbed specimens of cataclastic rocks confined compression test deformation response of cataclastic rocks comprehensive compression modulus analytical calculating

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	ZHANG Jin1
	DENG Ronggui1
	ZHONG Zhibin2
	LIU Yuancheng1
	WU Peipei3
	QI Shaoli4
	WANG Yuanyuan1

Cite this article:

ZHANG Jin1,DENG Ronggui1,ZHONG Zhibin2, et al. Analytical calculating method for compression deformation response of undisturbed cataclastic rocks under lateral confinement #br#[J]. , 2023, 42(7): 1695-1708.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.0984 OR https://rockmech.whrsm.ac.cn/EN/Y2023/V42/I7/1695

[1]	冯伟. 西藏多雄拉隧道地应力场特征与双护盾TBM掘进围岩稳定性研究[硕士学位论文][D]. 成都：西南交通大学，2018.(FENG Wei. Study on the in-situ stress characteristics and the stability of surrounding rock by double shield TBM excavation of the Duoxiong Tunnel in Tibet[M. S. Thesis][D]. Chengdu：Southwest Jiaotong University，2018.(in Chinese))
[2]	董志宏，丁秀丽，黄书岭，等. 高地应力区大型洞室锚索时效受力特征及长期承载风险分析[J]. 岩土力学，2019，40(1)：351-362. (DONG Zhihong，DING Xiuli，HUANG Shuling，et al. Analysis of ageing-stress characteristics and long-term bearing risk of anchor cable for large cavern in high geo-stress area[J]. Rock and Soil Mechanics，2019，40(1)：351-362.(in Chinese))
[3]	韩钢，侯靖，周辉，等. 层间错动带剪切蠕变试验及蠕变模型研究[J]. 岩石力学与工程学报，2021，40(5)：958-971.(HAN Gang，HOU Jing，ZHOU Hui，et al. Shear creep experimental study on constitutive model of interlayer shear weakness zones[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(5)：958-971. (in Chinese))
[4]	张占荣，杨艳霜，赵新益，等. 岩体变形参数确定的经验方法研究[J]. 岩石力学与工程学报，2016，35(增1)：3 195-3 202.(ZHANG Zhanrong，YANG Yanshuang，ZHAO Xinyi，et al. Empirical method research on rock mass deformation parameter determination[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(Supp.1)：3 195-3 202.(in Chinese))
[5]	杨建平，陈卫忠，戴永浩. 裂隙岩体变形模量尺寸效应研究Ⅱ:解析法[J]. 岩土力学，2011，32(6)：1 607-1 612.(YANG Jianping，CHEN Weizhong，DAI Yonghao. Study of scale effect of deformation modulus for fractured rock mass—part II：Analytical method[J]. Rock and Soil Mechanics，2011，32(6)：1 607-1 612.(in Chinese))
[6]	吴述彧，李鹏飞，陈占恒. 高寒峡谷地区碎裂松动岩体工程特性研究[J]. 地下空间与工程学报，2018，14(5)：1 250-1 257.(WU Shuyu，LI Pengfei，CHEN Zhanheng. Study on the engineering characteristics of cataclastic relaxed rock mass in high-cold canyon[J]. Chinese Journal of Underground Space and Engineering，2018，14(5)：1 250- 1 257.(in Chinese))
[7]	张玉，赵海斌，徐卫亚，等. 某水电站坝基挠曲破碎带工程力学特性试验研究[J]. 岩土力学，2013，34(12)：3 437-3 445.(ZHANG Yu，ZHAO Haibin，XU Weiya，et al. Experimental investigations on engineering mechanical properties of sandstone in the deflection fractured zone in dam foundation of a hydropower station[J]. Rock and Soil Mechanics，2013，34(12)：3 437-3 445.(in Chinese))
[8]	张强勇，王建洪，费大军，等. 大岗山水电站坝区岩体的刚性承压板试验研究[J]. 岩石力学与工程学报，2008，27(7)：1 417-1 422. (ZHANG Qiangyong，WANG Jianhong，FEI Dajun，et al. Testing study of rigid pressure-bearing plate of dam zone rock mass in Dagangshan hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(7)：1 417-1 422.(in Chinese))
[9]	王法刚，尹健民，李维树. 某水电站坝基岩体变形模量与波速相关性研究[J]. 地下空间与工程学报，2006，2(6)：903-906.(WANG Fagang，YIN Jianmin，LI Weishu. Correlation study on borehole deformation modulus and wave velocity of certain hydropower plant?s foundation rock[J]. Chinese Journal of Underground Space and Engineering，2006，2(6)：903-906.(in Chinese))
[10]	钟志彬，HU Xiaozhi，邓荣贵，等. 含裂隙充填节理岩体的压剪断裂机制研究[J]. 岩石力学与工程学报，2018，37(增1)：3 320-3 331. (ZHONG Zhibin，HU Xiaozhi，DENG Ronggui，et al．Study on the compression-shear fracture mechanism of in filled jointed rock mass with pre-crack[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(Supp.1)：3 320-3 331.(in Chinese))
[11]	钟志彬，邓荣贵，孙怡，等. 流纹岩天然裂隙网络几何特征分析[J]. 岩石力学与工程学报，2017，36(1)：167-174.(ZHONG Zhibin，DENG Ronggui，SUN Yi，et al. Geometric characterization of natural crack network in rhyolite[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(1)：167-174.(in Chinese))
[12]	钟志彬，邓荣贵，尹静，等. 基于Oda裂隙结构张量的流纹岩各向异性试验研究[J]. 实验力学，2015，30(2)：1-8.(ZHONG Zhibin，DENG Ronggui，YIN Jing，et al. Experimental study on anisotropy of rhyolite based on Oda crack fabictensor[J]. Journal of Experimental Mechanics，2015，30(2)：1-8.(in Chinese))
[13]	钟志彬，邓荣贵，李佳，等. 天然裂隙性流纹岩三轴力学特性试验研究[J]. 岩石力学与工程学报，2014，33(6)：1 233-1 240. (ZHONG Zhibin，DENG Ronggui，LI Jia，et al. Experimental study of triaxial mechanical properties of naturally fissure drhyolite[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(6)：1 233-1 240.(in Chinese))
[14]	孟国涛，徐卫亚，杨圣奇，等. 某水电站坝基G_(23)挤压蚀变破碎带成因及工程性质分析[J]. 岩土力学，2008，29(6)：1 691-1 696. (MENG Guotao，XU Weiya，YANG Shengqi，et al. Genesis mechanism and engineering characteristics analysis of G_(23) mylonitization and fractured belt in dam foundation of a hydropower station[J]. Rock and Soil Mechanics，2008，29(6)：1 691-1 696.(in Chinese))
[15]	牛双建，靖洪文，杨大方，等. 单轴压缩下破裂岩样强度及变形特征[J]. 采矿与安全工程学报，2015，32(1)：112-118.(NIU Shuangjian，JING Hongwen，YANG Dafang，et al. Experimental study on strength characteristics and deformation behavior of the cracked rock samples under uniaxial compression[J]. Journal of Mining and Safety Engineering，2015，32(1)：112-118.(in Chinese))
[16]	张玉，徐卫亚，赵海斌，等. 碎屑砂岩三轴压缩下强度和变形特性试验研究[J]. 岩土力学，2014，35(3)：666-674.(ZHANG Yu，XU Weiya，ZHAO Haibin，et al. Experimental investigation on strength and deformation properties of clastic sandstone under triaxial compression[J]. Rock and Soil Mechanics，2014，35(3)：666-674.(in Chinese))
[17]	韩立军，贺永年，蒋斌松，等. 环向有效约束条件下破裂岩体承载变形特性分析[J]. 中国矿业大学学报，2009，38(1)：14-19.(HAN Lijun，HE Yongnian，JIANG Binsong，et al. An analysis of the deformation characteristics of a cracked rock mass under load when cylindrically constrained[J]. Journal of China University of Mining and Technology，2009，38(1)：14-19.(in Chinese))
[18]	韩立军，贺永年，蒋斌松，等. 环向约束条件下破裂岩体力学特性试验研究[J]. 中国矿业大学学报，2006，34(5)：617-622.(HAN Lijun，HE Yongnian，JIANG Binsong，et al. Experimental of the mechanical characteristics of cracked rock mass under hoop constraints[J]. Journal of China University of Mining and Technology，2006，34(5)：617-622.(in Chinese))
[19]	冯树荣，蒋中明，钟辉亚，等. 向家坝水电站左岸坝基挤压破碎带变形特性试验研究[J]. 岩土力学，2015，36(增2)：539-544.(FENG Shurong，JIANG Zhongming，ZHONG Huiya，et al. Experimental study of deformation characteristics of broken rock mass under dam foundation at left bank of Xiangjiaba hydropower project[J]. Rock and Soil Mechanics，2015，36(Supp.2)：539-544.(in Chinese))
[20]	徐芝纶. 弹性力学[M]. 4版. 北京：高等教育出版社，2006：63-64.(XU Zhilun. Elastic mechanics[M]. 4th ed. Beijing：Higher Education Press，2006：63-64.(in Chinese))
[21]	吕颖慧，刘泉声，胡云华. 基于花岗岩卸荷试验的损伤变形特征及其强度准则[J]. 岩石力学与工程学报，2009，28(10)：2 096-2 103. (LU Yinghui，LIU Quansheng，HU Yunhua. Damage deformation characteristics and its strength criterion based on unloading experiments of granites[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(10)：2 096-2 103.(in Chinese))