Development of hollow cylinder torsional apparatus for rock

ZHOU Hui; JIANG Yue; LU Jing-jing; HU Da-wei; ZHANG Chuan-qing; CHEN Jun; LI Zhen

doi:10.16285/j.rsm.2016.2481

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Development of hollow cylinder torsional apparatus for rock

更新时间：2026-06-25

- Development of hollow cylinder torsional apparatus for rock
- Vol. 39, Issue 4, Pages: 1535-1542(2018)
- 作者机构：
  
  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试验室,湖北,武汉,430071
  2. 中国科学院大学,北京,100049
  3. 河南理工大学土木工程学院,河南,焦作,454000
  4. 河南理工大学深部矿井建设重点学科开放实验室,河南,焦作,454000
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2016.2481
  CLC： TU415
- Online First：06 June 2018，
  
  Published：2018
- 稿件说明：
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ZHOU Hui, JIANG Yue, LU Jing-jing, et al. Development of hollow cylinder torsional apparatus for rock[J]. 2018, 39(4): 1535-1542.
DOI：

ZHOU Hui, JIANG Yue, LU Jing-jing, et al. Development of hollow cylinder torsional apparatus for rock[J]. 2018, 39(4): 1535-1542. DOI： 10.16285/j.rsm.2016.2481.

摘要

针对深部工程岩体开挖时围岩内部应力状态复杂变化的特点，研制了可实现主应力量值变化和应力主轴旋转等复杂应力路径的岩石空心圆柱扭剪试验系统，可用于开展复杂应力作用下岩石的强度、变形和破坏形态的室内试验研究。介绍了该试验系统的基本结构、工作原理及技术参数。该试验系统具有如下特点：（1）通过利用空心圆柱试样与上、下压头的特点，克服了岩石试样扭矩施加的技术困难，将施加轴向力和扭矩的两个加载轴合二为一，彻底解决了轴向力加载与扭矩施加机构之间相互影响的技术难题。（2）通过采用新型自平衡加载三轴室，实现了轴向力、扭矩、内围压和外围压4种荷载的独立施加和控制。（3）采用应力与流量的加载控制方式，并通过软件集成，实现了主应力量值改变和应力主轴旋转耦合应力路径的准确模拟以及加载过程的稳定控制。（4）该试验系统结构简单，功能多样，操作方便。采用该试验系统进行了初步试验，验证了试验系统的可行性与实用性，表明该试验系统具有实现应力主轴旋转及主应力量值改变的复杂应力路径的功能。

Abstract

A novel hollow cylinder torsional apparatus was developed for rock to investigate the variations of the principal stress and orientation induced by the excavation of rock mass. The improved apparatus can be used to study the strength

deformation and failure mode of rock under complex stress in the laboratory. This study introduced the basic structure

working principle and technical parameters of the apparatus in detail. According to the features of the hollow cylinder sample with top and bottom pressure heads

the technical problem of the torque application was solved by combining the loading axis of the axial force with the torque into one. A new self-balanced loading triaxial cell was employed to load and control four loadings independently

which were from the axial force

torque

inner and outer confining pressures. Through the software integration technology

a load control method for stress and flow was applied to perform the accurate simulation of the principal stress

the stress path of the principal axis rotation and stability control of the loading process. At last

a preliminary test was carried out using the hollow cylinder torsional apparatus with advantages: simple structure

multiple functions and easy operation. Experimental results verified the feasibility and practicability of the apparatus

and indicated that the system realised the rotation of the principal stress axes and the change of the principal stress.

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