Research on Confining Pressure Effect on Mesoscopic Damage of Rock Salt Based on CT Scanning

被引：5
|
作者：
Wang, Lu [1 ]
Liu, Jianfeng [2 ]
Xu, Huining [2 ]
Xu, Yangmengdi [2 ]
机构：
[1] Xihua Univ, Sch Civil Engn Architecture & Environm, Chengdu, Sichuan, Peoples R China
[2] Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu, Sichuan, Peoples R China
来源：
PROCEEDINGS OF GEOSHANGHAI 2018 INTERNATIONAL CONFERENCE: ROCK MECHANICS AND ROCK ENGINEERING | 2018年
基金：
中国国家自然科学基金;
关键词：
Rock salt; CT scanning; Microscopic damage; Confining pressure effect; QUANTIFICATION; PERMEABILITY;
D O I：
10.1007/978-981-13-0113-1_28
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The Rock salt is the optimal surrounding rock of underground energy storage, so its damage is directly related to the impermeability and stability of the storage. In this study, CT scanning technique was used to analyze the microscopic damage characteristics of rock salt, which damaged under the three-dimensional stress state. The distribution and evolution characteristics of porosity, crack area, crack volume and crack quantity of damaged rock salt under different confining pressures were obtained. The results revealed the confining pressure effect of the mesoscopic damage of rock salt. With the increase of confining pressure, the quantity and size of cracks in rock salt gradually decreased. The confining pressure of 10 MPa is the turning point where the porosity decreased from fast to slow and the failure characteristics of rock salt changed from the apparent shear failure surface to the surface micro cracks.
引用
收藏
页码：254 / 262
页数：9
相关论文
共 50 条
  • [21] EFFECTS OF PRESSURE, DEVIATOR STRESS AND TEMPERATURE ON TRANSIENT CREEP OF A ROCK SALT AT LOW CONFINING PRESSURE
    WAWERSIK, WR
    TRANSACTIONS-AMERICAN GEOPHYSICAL UNION, 1978, 59 (04): : 376 - 376
  • [22] The effect of confining pressure on the kaiser effect of AE in two types of rock
    Nag, DK
    Seto, M
    Vutukuri, VS
    MINING SCIENCE AND TECHNOLOGY, 1996, : 657 - 660
  • [23] Numerical study on confining pressure effect in the process of rock failure
    Qiao, D. R.
    Sun, Y. N.
    Wang, S. H.
    Tang, C. A.
    COMPUTATIONAL METHODS, PTS 1 AND 2, 2006, : 1817 - +
  • [24] Mesoscopic deformation based plastic constitutive model of salt rock
    Chen Jian-wen
    Yang Chun-he
    ROCK AND SOIL MECHANICS, 2015, 36 (01) : 117 - 122
  • [25] EFFECT OF CONFINING PRESSURE ON THE FRACTURE-BEHAVIOR OF A POROUS ROCK
    GOWD, TN
    RUMMEL, F
    INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 1980, 17 (04): : 225 - 229
  • [26] Study on rock crack damage and confining pressure effects on shear fracture band
    Li Xiao-zhao
    Shao Zhu-shan
    Qi Cheng-zhi
    ROCK AND SOIL MECHANICS, 2019, 40 (11) : 4249 - 4258
  • [27] Experimental research on strength characteristic of brittle rock unloading confining pressure
    Liu, Dou-Dou
    Chen, Wei-Zhong
    Yang, Jian-Ping
    Tan, Xian-Jun
    Zhou, Xi-De
    Yantu Lixue/Rock and Soil Mechanics, 2009, 30 (09): : 2588 - 2594
  • [28] Experimental research on strength characteristic of brittle rock unloading confining pressure
    Liu Dou-dou
    Chen Wei-zhong
    Yang Jian-ping
    Tan Xian-jun
    Zhou Xi-de
    ROCK AND SOIL MECHANICS, 2009, 30 (09) : 2588 - 2594
  • [29] Effect of confining pressure on plastic flow of salt at 125°C
    Muhammad, N.
    Spiers, C. J.
    Peach, C. J.
    de Bresser, J. H. P.
    MECHANICAL BEHAVIOR OF SALT VII, 2012, : 57 - 64
  • [30] Research on Effects of Pressure Loading on Rock Lateral Cracks Occurrence under Confining Pressure
    Chen, Peiqi
    Cui, Jintao
    Zhou, Xiaojie
    CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING, PTS 1-4, 2014, 838-841 : 850 - +
12345