›› 2013, Vol. 34 ›› Issue (7): 1937-1942.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of acoustic emission character of salt rock soaked in brine

CHEN Jie1, 2，JIANG De-yi1，QIU Hua-fu1，FAN Jin-yang1，REN Song1，YANG Chun-he1, 2   

  1. 1. State Key Laboratory of Coal Mine Disaster Dynamics and Controls, Chongqing University, Chongqing 400044, China; 2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2012-08-09 Online:2013-07-10 Published:2013-07-15

PDF (Chinese)

1406

Abstract: In order to study the salt rock damage evolution characteristics in a certain ground temperature, brine and ground stress of the geological environment during the construction process of energy underground storage, the acoustic emission (AE) method is used to analyze the uniaxial compression damage process of salt rock with the combined effect of temperature and saturated brine. It is found that the uniaxial compressive strength and elastic modulus of salt rock samples are slightly lower after soaked in brine for 30 days. The changed peak strength of salt rock caused by saturated brine is not obvious. It is means that brine mainly works on dissolution effect on salt rock while with little soak weakening effect. The stress-strain curves and the acoustic emission-strain curves of salt rock have good consistency in the process under uniaxial compression tests; and the cumulative AE number increases with the increasing brine temperature. The salt rock samples soaked in the brine are usually with lower AE rate and AE number after the temperature and brine actions. In the construction period of salt cavern, salt rocks may lose slightly the strength but gain damage recovery due to brine. This feature of salt rock is conducive to security and stability during salt cavern construction.

Key words: rock mechanics, salt rock, acoustic emission(AE), temperature, brine, damage evolution

CLC Number: 

  • TU 458
[1] CHEN Wei-zhong, LI Fan-fan, LEI Jiang, YU Hong-dan, MA Yong-shang, . Study on creep characteristics of claystone under thermo-hydro-mechanical coupling [J]. Rock and Soil Mechanics, 2020, 41(2): 379-388.
[2] XU Yun-shan, SUN De-an, ZENG Zhao-tian, LÜ Hai-bo, . Temperature effect on thermal conductivity of bentonites [J]. Rock and Soil Mechanics, 2020, 41(1): 39-45.
[3] ZHANG Yan-bo, SUN Lin, YAO Xu-long, LIANG Peng, TIAN Bao-zhu, LIU Xiang-xin, . Experimental study of time-frequency characteristics of acoustic emission key signals during granite fracture [J]. Rock and Soil Mechanics, 2020, 41(1): 157-165.
[4] WANG Qing-zhi, FANG Jian-hong, CHAO Gang. Analysis of cooling effect of block-stone expressway embankment in warm temperature permafrost region [J]. Rock and Soil Mechanics, 2020, 41(1): 305-314.
[5] SONG Yong-jun, YANG Hui-min, ZHANG Lei-tao, REN Jian-xi. CT real-time monitoring on uniaxial damage of frozen red sandstone [J]. Rock and Soil Mechanics, 2019, 40(S1): 152-160.
[6] LIU Wei-jun, ZHANG Jin-xun, SHAN Ren-liang, YANG Hao, LIANG Chen, . Experiments on temperature field of multi-row-pipe partial horizontal freezing body in Beijing sand-gravel stratum under seepage [J]. Rock and Soil Mechanics, 2019, 40(9): 3425-3434.
[7] SEISUKE Okubo, TANG Yang, XU Jiang, PENG Shou-jian, CHEN Can-can, YAN Zhao-song, . Application of 3D-DIC system in rock mechanic test [J]. Rock and Soil Mechanics, 2019, 40(8): 3263-3273.
[8] FANG Jin-cheng, KONG Gang-qiang, CHEN Bin, CHE Ping, PENG Huai-feng, LÜ Zhi-xiang, . Field test on thermo-mechanical properties of pile group influenced by concrete hydration [J]. Rock and Soil Mechanics, 2019, 40(8): 2997-3003.
[9] YIN Li-yang, TANG Chao-sheng, XIE Yue-han, LÜ Chao, JIANG Ning-jun, SHI Bin, . Factors affecting improvement in engineering properties of geomaterials by microbial-induced calcite precipitation [J]. Rock and Soil Mechanics, 2019, 40(7): 2525-2546.
[10] MA Qiu-feng, QIN Yue-ping, ZHOU Tian-bai, YANG Xiao-bin. Mechanical properties and constitutive model of porous rock under loading and unloading [J]. Rock and Soil Mechanics, 2019, 40(7): 2673-2685.
[11] TIAN Jun, LU Gao-ming, FENG Xia-ting, LI Yuan-hui, ZHANG Xi-wei. Experimental study of the microwave sensitivity of main rock-forming minerals [J]. Rock and Soil Mechanics, 2019, 40(6): 2066-2074.
[12] JIN Jun-chao, SHE Cheng-xue, SHANG Peng-yang. A nonlinear creep model of rock based on the strain softening index [J]. Rock and Soil Mechanics, 2019, 40(6): 2239-2246.
[13] HE Gui-cheng, LIAO Jia-hai, LI Feng-xiong, WANG Zhao, ZHANG Qiu-cai, ZHANG Zhi-jun. A coupled thermo- pore water-mechanical model for a weak interlayer in water saturated slope and its application [J]. Rock and Soil Mechanics, 2019, 40(5): 1663-1672.
[14] SU Guo-shao, YAN Si-zhou, YAN Zhao-fu, ZHAI Shao-bin, YAN Liu-bin, . Evolution characteristics of acoustic emission in rockburst process under true-triaxial loading conditions [J]. Rock and Soil Mechanics, 2019, 40(5): 1673-1682.
[15] YANG Qi-lai, XIONG Yong-lin, ZHANG Sheng, LIU Gan-bin, ZHENG Rong-yue, ZHANG Feng, . Elastoplastic constitutive model for soft rock considering temperature effect [J]. Rock and Soil Mechanics, 2019, 40(5): 1898-1906.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] WEI Li，CHAI Shou-xi，CAI Hong-zhou，WANG Xiao-yan，LI Min3，SHI Qian. Research on tensility of wheat straw for reinforced material[J]. , 2010, 31(1): 128 -132 .
[2] HUANG Qing-xiang, ZHANG Pei, DONG Ai-ju. Mathematical model of “arch beam” of thick sandy soil layer movement in shallow seam[J]. , 2009, 30(9): 2722 -2726 .
[3] JING Zhi-dong, LIU Jun-xin. Experimental research on dynamic deformations of semi-rigid structures of subgrade bed-mudstone of red beds[J]. , 2010, 31(7): 2116 -2121 .
[4] LIU Zheng-hong，LIAO Yan-hong，ZHANG Yu-shou. Preliminary study of physico-mechanical properties of Luanda sand[J]. , 2010, 31(S1): 121 -126 .
[5] WANG Deng-ke，LIU Jian，YIN Guang-zhi，WEI Li-de. Research on influencing factors of permeability change for outburst-prone coal[J]. , 2010, 31(11): 3469 -3474 .
[6] FAN Heng-hui, GAO Jian-en, WU Pu-te, LUO Zong-ke. Physicochemical actions of stabilized soil with cement-based soil stabilizer[J]. , 2010, 31(12): 3741 -3745 .
[7] ZHANG Cheng-ping，ZHANG Ding-li，LUO Jian-jun，WANG Meng-shu，WU Jie-pu. Remote monitoring system applied to the construction of metro station undercrossing existing metro tunnel[J]. , 2009, 30(6): 1861 -1866 .
[8] WANG Jun, CAO Ping, LI Jiang-teng, LIU Ye-ke. Analysis of stability of tunnel-slope with rheological medium under rainfall infiltration[J]. , 2009, 30(7): 2158 -2162 .
[9] ZHANG Yuan, WAN Zhi-jun, KANG Jian-rong, ZHAO Yang-sheng. Analysis of stage characteristics of sandstone permeability under conditions of temperature and triaxial stress[J]. , 2011, 32(3): 677 -683 .
[10] ZHANG Xue-chan , GONG Xiao-nan , YIN Xu-yuan , ZHAO Yu-bo. Monitoring analysis of retaining structures for Jiangnan foundation pit of Qingchun road river-crossing tunnel in Hangzhou[J]. , 2011, 32(S1): 488 -0494 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd