| 预制双裂纹板岩各向异性细观尺度实验研究 |
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| 引用本文： | 戴永浩,夏开文,杨典森,陈卫忠,田洪铭,杨建平. 预制双裂纹板岩各向异性细观尺度实验研究[J]. 岩石力学与工程学报, 2016, 35(12): 2525-2533. DOI: 10.13722/j.cnki.jrme.2016.0611 |
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| 作者姓名： | 戴永浩 夏开文 杨典森 陈卫忠 田洪铭 杨建平 |
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| 作者单位： | (1. 中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室，湖北 武汉 430071；2. 天津大学 水利仿真与安全国家重点实验室，天津 300072；3. 天津大学 建筑工程学院，天津 300072；4. 多伦多大学 土木工程系，加拿大 多伦多 M5S1A4) |
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| 摘 要： | 板岩是一种非均质、连续–非连续介质，包含有微裂隙、微孔洞和微构造等，在力学、渗流、热传导等诸多方面均表现出明显的各向异性。选取锦屏水电站辅助洞泥质板岩试样，采用超薄金刚石锯片在标准岩样上预制一对三维裂纹，并应用岩土CT实验技术，开展水平和垂直层理方向加载条件下裂纹演化的细观尺度观测，分别得到了天然和预制双裂纹板岩破坏过程的细观表现特征，对比分析了水平和垂直层理方向加载条件下板岩裂纹起裂、扩展和破坏模式的不同，并对基于密度统计的岩石细观损伤变量定义方法的局限性进行了分析和讨论，为研究板岩的力学各向异性提供了新思路。
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| 关 键 词： | 岩石力学泥质板岩裂纹扩展各向异性CT实验细观损伤演化 |
Meso-scale experimental investigation on anisotropy of pre-cracked slate |
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| DAI Yonghao,XIA Kaiwen,YANG Diansen,CHEN Weizhong,TIAN Hongming,YANG Jianping. Meso-scale experimental investigation on anisotropy of pre-cracked slate[J]. Chinese Journal of Rock Mechanics and Engineering, 2016, 35(12): 2525-2533. DOI: 10.13722/j.cnki.jrme.2016.0611 |
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| Authors: | DAI Yonghao XIA Kaiwen YANG Diansen CHEN Weizhong TIAN Hongming YANG Jianping |
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| Affiliation: | (1. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China；2. State Key Laboratory of Hydraulic Engineering Simulation and Safety，Tianjin University，Tianjin 300072，China；3. School of Civil Engineering，Tianjin University，Tianjin 300072，China；4. Department of Civil Engineering，University of Toronto，Toronto，Ontario M5S1A4，Canada) |
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| Abstract: | Slate is a heterogeneous and continuous-discontinuous material filled with micro-fractures，pores，fabrics，etc.，and shows anisotropy in geological behavior，fluid flow and heat transfer. The slate samples from the auxiliary tunnel of Jinping hydro power station were cracked with an artificial diamond saw blade of ultrathin. The failure of samples under the uniaxial compression was observed with the 3D X-ray computed tomography system which is applicable to rock and soil. The difference between the sample failures with the loading direction perpendicular to and parallel to the bedding plane was obtained and the damage evolution of slate was also discussed on the meso-scale. |
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| Keywords: | rock mechanics argillaceous slate crack propagation anisotropy 3D X-ray computed tomography meso-scale damage evolution |
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