(1. College of Mining Engineering，Taiyuan University of Technology，Taiyuan，Shanxi 030024，China；2. Key Laboratory of In-situ Property-improving Mining of Ministry of Education，Taiyuan University of Technology，Taiyuan，Shanxi 030024，China)
Abstract：To investigate the creep properties of in-situ glauberite salt rock during the process of solution mining，the mutifunctional rock testing machine was used to conduct the tri-axial creep tests under the confining pressure of 4 MPa，the axial pressure of 5 MPa and the infiltration pressure of 3，2 and 1 MPa，respectively. To simulate the processes of solution mining，the creep process of glauberite salt rock was divided into four stages including the creep stage of hydraulic connection(CSHC)，the creep stage with pore water pressure(CSPWP)，the creep stage after drainage (CSAD) and the creep stage under axial pressure of 20 MPa(CSAP). The creep behaviors of four stages were compared. The results show that the hydraulic connection time for galuberite salt rock increases with decreasing infiltration pressure. At CSHC and CSPWP，continual dissolution of the minerals and the effective stress have signifacant effect on the creep deformations of specimens. The deformations of glauberite salt rock at CSAD and CSAP are dominated by the loading history of dissolution and the softening degree of mechanical properties of solid skeleton. Finally，the generalized Kelvin model was used to fit the creep curves at different creep stages，and it can describe the triaxial creep behavior of glauberite salt rock under coupled effect of dissolution and infiltration pressure.
梁卫国1，2，曹孟涛1，2，杨晓琴1，2，张传达1，2，徐素国1，2. 溶浸–应力耦合作用下钙芒硝盐岩蠕变特性研究[J]. 岩石力学与工程学报, 2016, 35(12): 2461-2470.
LIANG Weiguo1，2，CAO Mengtao1，2，YANG Xiaoqin1，2，ZHANG Chuanda1，2，XU Suguo1，2. Experimental study on creep of glauberite salt rock under coupled compression and dissolution. , 2016, 35(12): 2461-2470.
[1] 魏东岩. 论中国钙芒硝矿床[J]. 化工矿产地质，2001，23(2)：75–82.(WEI Dongyan. On Glauberite deposits in China[J]. Geology of Chemical Minerals，2001，23(2)：75–82.(in Chinese))
[2] 刘中华，徐素国，胡耀青，等. 钙芒硝盐岩溶蚀试验研究[J]. 岩石力学与工程学报，2010，29(增2)：3 616–3 621.(LIU Zhonghua，XU Suguo，HU Yaoqing，et al. Experimental study of corrosion of glauberite salt rock[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(Supp.2)：3 616–3 621.(in Chinese))
[3] JIN J，CRISTESCU N D. An elastic/viscoplastic model for transient creep of rock salt[J]. International Journal of Plasticity，1998，14(1)：85–107.
[4] MUNSON D E，DEVRIES K L，FOSSUM A F，et al. Extension of the M-D model for treating stress drops in salt[C]// Proceedings of 3rd Conference on the Mechanical Behavior of Salt. Palaiseau，France：[s. n.]，1993：31–44.
[5] YANG C H，DAEMEN J K，YIN J H. Experimental investigation of creep behavior of salt rock[J]. International Journal of Rock Mechanics and Mining Sciences，1999，36(2)：233–242.
[6] 杨春和，白世伟，吴益民. 应力水平及加载路径对盐岩时效的影响[J]. 岩石力学与工程学报，2000，19(3)：270–275.(YANG Chunhe，BAI Shiwei，WU Yimin. Stress level and loading path effect on time dependent properties of salt rock[J]. Chinese Journal of Rock Mechanics and Engineering，2000，19(3)：270–275.(in Chinese))
[7] 王军保，刘新荣，杨 欣，等. 不同加载路径下盐岩蠕变特性试验[J]. 解放军理工大学学报：自然科学版，2013，14(5)：517–523.(WANG Junbao，LIU Xinrong，YANG Xin，et al. Test on creep properties of salt rock under different loading paths[J]. Journal of PLA University of Science and Technology：Natural Science，2013，14(5)：517–523. (in Chinese))
[8] ZHOU H W，WANG C P，HAN B B，et al. A creep constitutive model for salt rock based on fractional derivatives[J]. International Journal of Rock Mechanics and Mining Sciences，2011，48(1)：116–121.
[9] 杨典森，陈卫忠，杨建平，等. 岩盐蠕变行为的宏细观损伤特性试验研究[J]. 岩石力学与工程学报，2011，30(7)：1 363–1 367.(YANG Diansen，CHEN Weizhong，YANG Jianping，et al. Experimental study of micro-macro damage properties of rock salt during creep test by means of digital image correlation technique[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(7)：1 363–1 367.(in Chinese))
[10] 陈 锋，李银平，杨春和，等. 云应盐矿盐岩蠕变特型试验研究[J].岩石力学与工程学报，2006，25(增1)：3 022–3 027.(CHEN Feng，LI Yinping，YANG Chunhe，et al. Experimental study on creep behaviors of rock salt in Yunying salt mine[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(Supp.1)：3 022–3 027. (in Chinese))
[11] 梁卫国，徐素国，赵阳升，等. 盐岩蠕变特性的试验研究[J]. 岩石力学与工程学报，2006，25(7)：1 386–1 390.(LIANG Weiguo，XU Suguo，ZHAO Yangsheng，et al. Experimental study on creep property of rock salt[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(7)：1 386–1 390.(in Chinese))
[12] ZHANG H B，WANG Z Y，ZHENG Y L，et al. Study on triaxial creep experiment and constitutive relation of different rock salt[J]. Safety Science，2012，50(4)：801–805.
[13] ZHAO Y S，YANG D，LIU Z H，et al. Problems of evolving porous media and dissolved glauberite micro-scopic analysis by micro-computed tomography：evolving porous media(1)[J]. Transport in Porous Media，2015，107(2)：365–385.
[14] 杨晓琴，于艳梅，张传达，等. 温度-浓度耦合作用下可溶岩钙芒硝溶浸细观结构演化[J]. 煤炭学报，2014，39(3)：460–466.(YANG Xiaoqin，YU Yanmei，ZHANG Chuanda，et al. Micro-structural development of glauberite under temperature and concentration coupling effect[J]. Journal of China Coal Society，2014，39(3)：460–466.(in Chinese))
[15] 杨晓琴，梁卫国，张传达，等. 不同温度下钙芒硝矿溶解细观结构显微CT试验研究[J]. 煤炭学报，2012，37(12)：2 031–2 037.(YANG Xiaoqin，LIANG Weiguo，ZHANG Chuanda，et al. Experimental study on meso-structure of glauberite soaked in water under different temperature[J]. Journal of China Coal Society，2012，37(12)：2 031– 2 037.(in Chinese))
[16] 梁卫国，徐素国，赵阳升. 钙芒硝盐岩溶解渗透力学特性研究[J].岩石力学与工程学报，2006，25(5)：951–955.(LIANG Weiguo，XU Suguo，ZHAO Yangsheng. Investigation on solution pervasion and mechanical characteristics of glauberite salt rock[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(5)：951–955.(in Chinese))
[17] 杨晓琴，梁卫国，于艳梅，等. 溶浸作用下难溶盐岩力学特性弱化及细观机制研究[J]. 岩石力学与工程学报，2014，33(1)：134–143.(YANG Xiaoqin，LIANG Weiguo，YU Yanmei，et al. Mechanical properties weakening and meso-mechanism of hard dissolved salt rock soaked in brine[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(1)：134–143.(in Chinese))
[18] 王芝银，李云鹏. 岩体流变理论及其数值模拟[M]. 北京：科学出版社，2008：20–60.(WANG Zhiyin，LI Yunpeng. Rheology theory and numerical simulation of rock mass[M]. Beijing：Science Press，2008：20–60.(in Chinese))
[19] 汤连生，张鹏程，王思敬. 水–岩化学作用的岩石宏观力学效应的试验研究[J]. 岩石力学与工程学报，2002，21(4)：526–531.(TANG Liansheng，ZHANG Pengcheng，WANG Sijing. Testing study on macroscopic mechanics effect of chemical action of water on rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(4)：526–531.(in Chinese))
[20] LIANG W G，ZHAO Y S，XU S G，et al. Dissolution and seepage coupling effect on transport and mechanical properties of glauberite salt rock[J]. Transport in Porous Media，2008，74(2)：185–199.
[21] 陈钢林，周仁德. 水对受力岩石变形破坏宏观力学效应的实验研究[J]. 地球物理学报，1991，34(3)：335–341.(CHEN Ganglin，ZHOU Rende. An experimental study concerning the macro-scopic effect of water on the deformation and failure of loaded rocks[J]. Acta Geophysica Sinica，1991，34(3)：335–341.(in Chinese))
2016, Vol. 35 
