Analysis on Difference Between Rock Salt Dissolving Model with and Without Mechanical Effect
American Journal of Civil Engineering
Volume 4, Issue 6, November 2016, Pages: 337-344
Received: Nov. 29, 2016;
Published: Dec. 1, 2016
Views 2562 Downloads 81
Tang Yanchun, College of Civil Engineering and Architecture, China Three Gorges University, Yichang City, China
Liu Ruilong, College of Civil Engineering and Architecture, China Three Gorges University, Yichang City, China
Zhou Hui, State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan City, China
For the stability of rock salt cavern during the washing process, the research on the relationship between the dissolving mechanism and mechanical effect of rock salt is necessary. Through analyses on rock salt dissolving mechanism, and rock salt dissolving effect with and without mechanical effect, difference between rock salt dissolving model with and without mechanical effect has been studied. It can be concluded that rock salt dissolving mechanism with and without mechanical effect is same, but with mechanical effect, especially after the plastic strain and cracks have been produced, difference between the dissolving effect with and without mechanical effect has been existed; compared with the parameter “diffusion coefficient” D on the dissolving model without mechanical effect, the new conception “equivalent diffusion coefficient” D* has been proposed to describe the macro-dissolving speed of rock salt with mechanical effect under the assumption that dissolving action face has not been changed during the dissolving process. D* is a variable of the equivalent plastic strain and dissolving time; based on rock salt dissolving model without mechanical effect and the new concept D*, rock salt dissolving model with mechanical effect has been built; through analyzing the datum of uniaxial compression meso-mechanical test under the coupled mechanical-dissolving effect, the method to calculate D* has been proposed, and the relationship between axial plastic strain, dissolving time and D* has been obtained. The achieved results can provide a research foundation for the further analyses on coupled mechanical-dissolving mechanism of rock salt.
Analysis on Difference Between Rock Salt Dissolving Model with and Without Mechanical Effect, American Journal of Civil Engineering.
Vol. 4, No. 6,
2016, pp. 337-344.
TAN Yufei, CHEN Jiaxin, and YU Qizheng, “The Construction and Development of foreign underground gas storage caverns in salt formations” Oil & Gas Storage (in Chinese), vol. 20, n. 1, p. 6–8, 2001.
HE Jianying, ZHANG Dengqing, “Salt mine exploiting and petroleum reserve storage building” China Foreign Energy, vol. 11, n. 3, p. 7–11, 2006.
LI Jianzhong, “Using salt beds to build underground gas storages with salt Caves” Natural Gas Industry (in Chinese), vol. 24, n. 9, p. 119–121, 2004.
LIU Xinrong, JIANG Deyi, and XU Jiang, et al, “FEM analysis of stress distribution law in the rocksalt cavity’s surrounding rock” Journal of Chongqing University (in Chinese), vol. 26, n. 2, p. 39–41, 2003.
HOU Z, “Mechanical and hydraulic behavior of salt rock in the excavation disturbed zone around underground facilities” International Journal of Rock Mechanics and Mining Sciences, vol. 40, n. 5, p. 725–738, 2003.
Zhigalkin V. M., Usolfseva O. M., and Semenov V. N., et al, “Deformation of quasi-plastic salt rocks under different conditions of loading. Report I: Deformation of salt rocks under uniaxial compression” Journal of Mining Science, vol. 41, n. 6, p. 507–515, 2005.
Zhou H.W., Wang C. P., and Han B. B., et al, “A creep constitutive model for salt rock based on fractional derivatives” International Journal of Rock Mechanics and Mining Sciences, vol. 48, n. 1, p. 116–121, 2011.
YANG Junliu, YANG Jinchun, and ZOU Yushu, “The Study on Experiments of Solution Mining Properties of Salt” Journal of Sichuan Union University (Engineering Science Edition) (in Chinese), vol. 1, n. 2, p. 74–80, 1997.
LIANG Weiguo, “Study on multi-field coupling theory and its application of hydraulic fracturing and solution mining for salt deposit” Chinese Journal of Rock Mechanics and Engineering, vol. 24, n. 6, p. 1090–1090, 2005.
ZHOU Hui, TANG Yanchun, and HU Dawei, et al, “Study on coupled penetrating-dissolving model and experiment for salt rock cracks” Chinese Journal of Rock Mechanics and Engineering, vol. 25, n. 5, p. 946–950, 2006.
BAN Fansheng, GAO Shusheng, and SHAN Wenwen, “Rock salt grades influences on salt cavity gas storage built with water solution” Natural Gas Industry (in Chinese), vol. 26, n. 4, p. 115–118, 2006.
ZHAO Zhicheng, ZHU Weiyao, and SHAN Wenwen, et al, “Research on mechanism of solution mining for building underground gas storage in salt cavern” Petroleum Exploration and Development (in Chinese), vol. 30, n. 5, p. 107–109, 2003.
BAN Fansheng, GENG Jing, and GAO Shusheng, et al, “Studying on basic theory and influence factor of gas storage in Salt caverns building with water solution” Natural Gas Geoscience (in Chinese), vol. 17, n. 4, p. 261–266, 2006.
Tang Yanchun, Zhou Hui, and Feng Xiating, et al, “Analysis of Rock Salt Uniaxial Compression Meso-Mechanics Test Considering Coupled Stress-Dissolving Effect” Chinese Journal of Rock Mechanics and Engineering, vol. 27, n. 2, p. 294–302, 2008.