Development of Shear-Flow Coupling Test Apparatus of Rock Joints

岩石节理剪流耦合试验装置的研制

• 批准号: 04555151
• 负责人: ESAKI Tetsuro
• 金额: $ 4.93万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04555151/
• 关键词: Rock joint; Shear strength; Permeability test; Shear-flow couplig; Radioactive waste; Granite; 変位履歴; せん断応力; ダイレーション; 透水係数; せん断透水同時計測; ダイレ-ション; せん断一透水同時計測

The subject of underground utilizations whose representative is radioactive waste disposal sites has enhanced the importance of investigating water flow characteristics of fractured rock masses.From this point of view, a new testing apparatus has been developed to enable shear-flow coupling testing. This apparatus is employed for investigating the shear-dilation-flow characteristics of joints extending over the residual regions after a peak stress.(1) A Shear-flow coupling test apparatus which allows large shear displacement and high normal stress was developed, and a testing procedure for control and measurement was established.(2) Using this apparatus, the effect of shear deformation on hydraulic conductivity of a joint has been investigated for artificial jointed hard granite specimens.(3) Hydraulic conductivities increased with increases of shear displacement at all ranges of considered to be an increasing of fracture aperture due to the riding and the break of asperities.(4) Shear-flow characteristics obtained from the test agree with certain predictions, which take account of the theoretical and physical apertures, fractured surfaces.

以放射性废物处理场为代表的地下利用学科提高了研究裂隙岩体水流特性的重要性。从这个角度来看，一种新的测试装置已经被开发出来，可以进行剪切流耦合测试。该装置用于研究峰值应力后延伸到残余区域的节理的剪切膨胀流动特性。(1)开发了允许大剪切位移和高正应力的剪切流动耦合测试装置，并进行了测试建立了控制和测量程序。(2)使用该装置，研究了人工节理硬质花岗岩试件的剪切变形对节理导水率的影响。(3)在所有范围内，导水率随着剪切位移的增加而增加被认为是由于裂缝孔径的增加(4)试验得到的剪切流特性与考虑了理论和物理孔径、断裂面的预测结果一致。

项目成果

Tetsuro ESAKI: "Shear-Flow Coupling Properties of Rock Joints" Proc. 8th Conf. Int. Soc. Rock Mech.(1995)

Tetsuro ESAKI：“岩石节理的剪切流耦合特性”Proc。

T.Kimura, et al.: "Surface Roughness of Rock Joints and their Shearing Characteristics" J.of the Japan Society of Eng.Geology. Vol.33, No.5. 255-262 (1993)

T.Kimura 等人：“岩石节理的表面粗糙度及其剪切特性”日本工程地质学会杂志。

T.Esaki,K.Nakahara,Y.J.Jiang,Y.Mitani: "Effects of Preceding Shear History on Shear-Flow Coupling Properties of Rock Joints" 2nd Int.Conf.on Mech.of Jointed and Faulted Rock.489-494 (1995)

T.Esaki，K.Nakahara，Y.J.Jiang，Y.Mitani：“前剪切历史对岩石节理剪切流耦合特性的影响”第二届节理断层岩石力学国际会议.489-494（1995）

T.Kimura, et al.: "Surface Roughness and Apertures of an Fractured Rock and Its Hydraulic Properties" J.of the Japan Society of Eng.Geology. Vol.33, No.2. 61-70 (1992)

T.Kimura 等人：“裂隙岩石的表面粗糙度和孔径及其水力特性”日本工程地质学会杂志。

木村 強,江崎 哲郎: "岩盤不連続面の表面租さ(JRC)とせん断特性" 応用地質. 33. 255-262 (1992)

Tsuyoshi Kimura、Tetsuro Ezaki：“岩石不连续性的表面粗糙度 (JRC) 和剪切特性”《应用地质学》33. 255-262 (1992)。