Theoretical Research of the Relationship between Rock Salt Damage and Volume Strain Based on Triaxial Compression Test

陈剑文; 贾圣龙

doi:10.13409/j.cnki.jdpme.2015.02.015

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Theoretical Research of the Relationship between Rock Salt Damage and Volume Strain Based on Triaxial Compression Test

更新时间：2025-12-11

- Theoretical Research of the Relationship between Rock Salt Damage and Volume Strain Based on Triaxial Compression Test
- Vol. 35, Issue 2, Pages: 232-235+269(2015)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2015.02.015
  CLC： U45
- Published：2015
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[1]陈剑文,贾圣龙.基于三轴压缩试验的盐岩损伤与体应变关系理论研究[J].防灾减灾工程学报,2015,35(02):232-235+269.

陈剑文, 贾圣龙. Theoretical Research of the Relationship between Rock Salt Damage and Volume Strain Based on Triaxial Compression Test[J]. 2015, 35(2): 232-235+269.
[1]陈剑文,贾圣龙.基于三轴压缩试验的盐岩损伤与体应变关系理论研究[J].防灾减灾工程学报,2015,35(02):232-235+269. DOI： 10.13409/j.cnki.jdpme.2015.02.015.

陈剑文, 贾圣龙. Theoretical Research of the Relationship between Rock Salt Damage and Volume Strain Based on Triaxial Compression Test[J]. 2015, 35(2): 232-235+269. DOI： 10.13409/j.cnki.jdpme.2015.02.015.

摘要

基于三轴压缩试验

分析三轴压缩过程中盐岩的应变变化特点

定义压缩扩容边界点为最大体应变点。根据岩石内部裂隙发展演化情况

分析与其相应的盐岩内部特征量

得出孔隙率的改变是导致盐岩应变变化的内部原因。根据这一分析成果

定义不同应力状态下的孔隙率为损伤变量

得出不同损伤状态下盐岩孔隙率的变化情况

得到盐岩损伤与体应变关系式。该关系式定量表达了盐岩损伤与体应变之间的关系

为进一步研究盐岩在不同损伤状态下的气体渗透规律提供了理论基础。

Abstract

Based on triaxial compression test

this paper presents the analysis of strain variation characteristics at five stages during triaxial compression test and defines compression-dilatancy boundary as the point of maximum compression.According to the development of fracture in rock salt sample

this paper analyzes the feature quantity which leads to the change of strain of rock salt and comes to the conclusion that the change of strain is consistent with the change of porosity in triaxial compression test.Based on the conclusion

the damage variable is defined as the change of porosity of rock salt.Then strain variation of rock salt in triaxial compression test is analyzed.And variation of rock salt porosity is obtained in different damage states.This formulation quantitatively describes the relationship between damage of rock salt and volume strain.Based on the study above

formulation between rock salt damage and volume strain

which can provide a basis for the following study of the law of gas permeability in different damage states and the construction of energy storage can be obtained.The conclusion provides a theoretical basis for the safe operation of engineering.

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references

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基于盐岩压缩-扩容边界理论的盐岩储气库密闭性分析研究 [J]. 陈剑文,杨春和,郭印同. 岩石力学与工程学报 . 2009(S2)

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Rock salt dilatancy boundary from combined acoustic emission and triaxial compression tests [J] . H. Alkan,Y. Cinar,G. Pusch. International Journal of Rock Mechanics and Mining Sciences . 2006 (1)

Quantifying progressive pre-peak brittle fracture damage in rock during uniaxial compression [J] . E Eberhardt,D Stead,B Stimpson. International Journal of Rock Mechanics and Mining Sciences . 1999 (3)

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