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首页> 外文期刊>Geotechnical testing journal >A New Testing Method for the Characterization of the Tension- Compression Cyclic Behavior of Rock Salt
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A New Testing Method for the Characterization of the Tension- Compression Cyclic Behavior of Rock Salt

机译：一种新的岩盐张力循环行为表征的新测试方法

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摘要

To improve the stability of salt cavern gas storage, the tension-compression cyclic behavior of surrounding rock must be correctly characterized. This article proposes a new tension-compression cyclic testing method in which a rock specimen-fixing device with position-limit spring components is provided. The fixing device can both bear compressive stress and direct tensile stress, that is, the new testing method implements a completely reversed stress condition: direct tensile stress and compressive stress. Investigations on the tension-compression cyclic behavior of pure rock salt and impure rock salt were undertaken using this method. In the experiment, four cycles of tension-compression alternation loading were carried out first, then a tensile stress was applied until the occurrence of rock failure. The axial stress-strain curve of pure rock salt shows hysteretic behavior within each cycle. The damage evolution process induced by the tension-compression cyclic stress was illustrated by the spatial distribution of acoustic emission (AE) events and the variation of AE cumulative counts. The experimental results indicate that the developed method can be easily applied to investigate the tension-compression cyclic behavior of rock material.
机译：为了提高盐洞储气储存的稳定性，必须正确地表征周围岩石的张力 - 压缩循环行为。本文提出了一种新的张力 - 压缩循环测试方法，其中提供了具有定位弹簧组件的岩石样本固定装置。定影装置可以承受压缩应力和直接拉伸应力，即新的测试方法实现完全反向的应力条件：直接拉伸应力和压缩应力。使用该方法对纯岩盐和不纯岩盐张力循环行为的研究进行了研究。在实验中，首先进行四个张力压缩交替加载的循环，然后施加拉应力直至岩石破坏的发生。纯岩盐的轴向应力 - 应变曲线显示每个循环内的滞后行为。通过声发射（AE）事件的空间分布和AE累积计数的变异来说明由张力 - 压缩循环应力引起的损伤进化过程。实验结果表明，可以容易地应用开发的方法来研究岩石材料的张力压缩循环行为。

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  • 来源
    《Geotechnical testing journal》 |2020年第4期|844-852|共9页
  • 作者

    Liu Jianfeng; Wang Chunping; Pei Jianliang; Wang Lu; Xu Huining; Deng Chaofu;

  • 作者单位

    Sichuan Univ State Key Lab Hydraul & Mt River Engn 24 South Sect 1 Yihuan Rd Chengdu 610065 Peoples R China;

    Sichuan Univ State Key Lab Hydraul & Mt River Engn 24 South Sect 1 Yihuan Rd Chengdu 610065 Peoples R China|China Natl Nucl Corp Beijing Res Inst Uranium Geol Key Lab Geol Disposal High Level Radioact Waste 10 Xiao Guan Dong Li Beijing 100029 Peoples R China;

    Sichuan Univ State Key Lab Hydraul & Mt River Engn 24 South Sect 1 Yihuan Rd Chengdu 610065 Peoples R China;

    Sichuan Univ State Key Lab Hydraul & Mt River Engn 24 South Sect 1 Yihuan Rd Chengdu 610065 Peoples R China;

    Sichuan Univ State Key Lab Hydraul & Mt River Engn 24 South Sect 1 Yihuan Rd Chengdu 610065 Peoples R China;

    Sichuan Univ State Key Lab Hydraul & Mt River Engn 24 South Sect 1 Yihuan Rd Chengdu 610065 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    completely reversed stress; tension-compression cyclic test; acoustic emission; damage evolution; rock salt;

    机译：完全逆转应力;张力压缩循环试验;声发射;损伤进化;岩盐;

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