A method for measurement of rock stress change - Cross-sectional borehole deformation method -
A method for measurement of rock stress change - Cross-sectional borehole deformation method -
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一种测量岩石应力变化的方法 截面钻孔变形法
DOI：
10.11187/ijjcrm.10.5
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
T. Yokoyama
中科院分区：
文献类型：
--
作者：
Y. Obara;T. Yoshinaga;M. Kataoka;T. Yokoyama
提出了一种利用钻孔监测岩石应力的应力变化测量方法。该方法可测量岩体内与钻孔轴线垂直平面上的二维应力变化状态，称为截面钻孔变形法（CBDM）。本文首先介绍了CBDM的工作原理，以及该仪器的原型装置和校正仪器在井内偏心定位的理论步骤。在此基础上，利用带钻孔的花岗岩板进行了室内试验，验证了应力变化的估计。最后，将CBDM应用于地下洞室开挖过程中及开挖后的应力变化，得到了洞室周围岩石应力分布的变化情况。说明了CBDM可以估计洞室直接岩体的应力变化，并且CBDM可用于测量岩石应力变化。
A method for measurement of stress change is suggested to monitor rock stress using a borehole. The two-dimensional state of stress change in a plane perpendicular to the axis of a borehole drilled within a rock mass can be measured by this method, which is named the Cross-sectional Borehole Deformation Method (CBDM). In this paper, the theory of the CBDM is firstly described, as well as the prototype instrument and theoretical procedure for correcting eccentric positioning of the instrument in the borehole. Then the estimation of the stress change is demonstrated in a laboratory experiment, using a granite plate with a borehole. Finally, applying the CBDM to measured stress change around an underground cavern during and after excavation, the changes of rock stress distribution around the cavern is shown. It makes clear that stress change in the immediate rock mass of the cavern can be estimated by the CBDM and that the CBDM is available for measuring rock stress change.
用于岩石应力测量的横截面钻孔变形方法 (CBDM)
DOI：
--
发表时间：
2004
期刊：
Proc.of 3rd ARMS 12
影响因子：
--
作者：
Y.Kikuchi;J.Otani;T.Mukunoki;H.Yoshino;T.Nagatome;Y.Obara;大谷 順;大谷 順;Jun Otani;Katsuaki Koike;Y.Obara
通讯作者：
Y.Obara