High pressure shearing servo testing system for rock joint with multi modes and corresponding function test analysis

JIANG Quan; LI Li-fu; FENG Xia-ting; LI Shao-jun; QIN Wei-min; CHEN La-chun

doi:10.16285/j.rsm.2019.0772

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High pressure shearing servo testing system for rock joint with multi modes and corresponding function test analysis

更新时间：2026-06-25

- High pressure shearing servo testing system for rock joint with multi modes and corresponding function test analysis
- Vol. 41, Issue 9, Pages: 3159-3169(2020)
- 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实验室,湖北,武汉,430071
  2. 中国科学院大学,北京,100049
  3. 湖北宜化集团有限责任公司,湖北,宜昌,443008
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2019.0772
  CLC： TU45
- Online First：22 October 2020，
  
  Published：2020
- 稿件说明：
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JIANG Quan, LI Li-fu, FENG Xia-ting, et al. High pressure shearing servo testing system for rock joint with multi modes and corresponding function test analysis[J]. 2020, 41(9): 3159-3169.
DOI：

JIANG Quan, LI Li-fu, FENG Xia-ting, et al. High pressure shearing servo testing system for rock joint with multi modes and corresponding function test analysis[J]. 2020, 41(9): 3159-3169. DOI： 10.16285/j.rsm.2019.0772.

摘要

高法向应力和常法向刚度边界是深部岩体结构面基本边界约束特征，开发具有高法向荷载、大剪切面积、多剪切模式、长剪切距离的岩石结构面剪切伺服试验系统是认识深部岩体结构面剪切变形与破坏的前提。为此，阐述了新开发的大型多功能高压岩石结构面剪切伺服试验系统的特征参数和功能特性。该系统由法向与剪切加卸载子系统、伺服控制子系统、数据采集与交互软件子系统、液压油源辅助子系统等组成，其最大法向荷载为1 500 kN、最大剪切荷载为2 000 kN，可适用尺寸为20 cm×10 cm×20 cm、30 cm×20 cm×30 cm和50 cm×30 cm×30 cm（长×宽×高）的结构面剪切/试块剪断试验。试验过程可采用复杂的法向加卸载（NLU）、常法向荷载（CNL）、常法向刚度（CNS）、快/慢剪（FLS）、往返剪（GBS）等试验模式，辅助有剪切观测视窗和声发射定位监测。基于水泥材质结构面和岩石试样开展本系统的功能测试试验结果表明，由于采用了先进的硬件结构设计和高效的伺服软件控制，该高压伺服试验系统可以实现高频伺服反馈控制和数据自动采集，从而可获得稳定和可靠的结构面试样剪切测试结果，支撑深部含结构面岩体稳定性理论研究和工程应用分析。

Abstract

The high normal stress and constant normal stiffness are the general boundary constraint features of deep rock joints. Advanced rock joint shear servo test system with high normal load

large shear area

multi-shear mode and long shear distance is the premise for understanding the shearing deformation and failure of rock joints in deep stress condition. Thus

a new shear servo testing system

with large-scale

multi-functional and high-pressure

is invented. The system consists of normal and shear loading and unloading subsystems

servo control subsystems

data acquisition and software subsystems

and hydraulic oil source auxiliary subsystems. The functional parameters of the testing system include the maximum normal load of 1 500 kN

the maximum shear load of 2 000 kN. This testing system is available for the rock joint shearing test on the sample with standard sizes of 20 cm×10 cm×20 cm

30 cm×20 cm×30 cm and 50 cm×30 cm×30 cm (length×width×height). The testing system can finish complex loading and unloading

constant normal loading (CNL)

constant normal stiffness (CNS)

fast/slow shearing

reciprocating shearing and other loading modes

assisting with shear observation window and acoustic emission positioning monitoring. Based on the test specimens of cement material and rock specimens

the experimental results show that this servo testing system can achieve high-frequency feedback control and data acquisition due to the excellent hardware structure and efficient software control

which can give out stable and reliable experimental data

support the stability study and engineering application analysis for deep rock engineering.

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