DISSOLUTION EXPERIMENT AND NUMERICAL SIMULATION ANALYSIS FOR CONDENSATION WATER ON CARBONATE ROCKS
ZHANG Ao1，FANG Yun2，CHEN Jianping3，FAN Zilong3
(1. Institute of Geological Survey，China University of Geosciences，Wuhan，Hubei 430074，China；2. Faculty of Engineering，China University of Geosciences，Wuhan，Hubei 430074，China；3. Institute of Longmen Grottoes，Luoyang，Henan 471003，China)
Abstract：In order to protect stone relics from the infraction of condensation water，it is necessary to study the mechanism of condensation water. Based on dissolution experimental methods，the dissolution of condensation water on carbonate rocks was stimulated with the self-made static and dynamic experimental system. Considering CO2 concentration，temperature and humidity，the effect of different factors on the dissolution process was analyzed and the mass loss，microstructure，water change，and etc. were tested during the experiment process. Finally，the process of dissolution was stimulated by the numerical software Phreeqc to verify the accuracy of simulation experiment. Static and dynamic simulation experiments show that condensation water dissolves carbonate rocks increasing with CO2 concentration and the dissolution of limestone is greater than dolomite. In the dynamic simulation experiment of vapor condensation，dolomite dissolution and rock porosity are significantly increased because the microscopic vapor is strong intrusive. Dissolution process and calculated dissolution depth are consistent with numerical simulation results. Dissolution curve shows quadratic indicating that preliminary dissolution is faster and post-dissolution is gentler. Calculated dissolution depth of limestone is 0.027 6 mm and the dissolution depth of dolomite is 0.013 6 mm in a year.
朱华，杨刚亮，方云，等. 龙门石窟潜溪寺凝结水病害形成机理及防治对策研究[J]. 中原文物，2008，(4)：109-112.(ZHU Hua，YANG Gangliang，FANG Yun，et al. Research on formation mechanism and prevention countermeasures for condensation water disease on Qianxi Temple of Longmen Grottoes[J]. Cultural Relics of Central China，2008，(4)：109-112.(in Chinese))
[2]
钱海涛，谭朝爽，李守定，等. 应力对岩盐溶蚀机制的影响分析[J]. 岩石力学与工程学报，2010，29(4)：757-764.(QIAN Haitao，TAN Zhaoshuang，LI Shouding，et al. Analysis of effect of stress on dissolution mechanism ofsalt rock[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(4)：757-764.(in Chinese))
[3]
方云，黄璇，王晓东，等. 龙门石窟潜溪寺凝结水定量测试研究[J]. 现代地质，2011，25(6)：1214-1218.(FANG Yun，HUANG Xuan，WANG Xiaodong，et al. Quantification Research on Condensation Water on Qianxi Temple of Longmen Grottoes[J]. Geoscience，2011，25(6)：1214-1218.(in Chinese))
[4]
甘向明. 云冈石窟凝结水研究与防治[硕士学位论文][D]. 北京：中国地质大学(北京)，2006.(GAN Xiangming. Study and control of condensationwater in Yungang Grottoes[M.S. Thesis][D].Beijing：China University of Geosciences(Beijing)，2006.(in Chinese))
[5]
JUNG H C，KAZUSHI K，YASUAKI I. Quartz dissolution experiments at various pH，temperature and stress conditions：CLSM and ICP-AES investigations[J]. Environ Earth SCI，2011，62：1-10.
[6]
SINGH T N，SHARMA P K，MANOJ K. Effect of pH on the physico-mechanical properties of marble[J]. Bulletin of Engineering Geology and the Environment，2006，66(1)：81-87.
[7]
郭青林，王旭东，薛 平，等. 敦煌莫高窟底层洞窟岩体内水汽与盐分空间分布及其关系研究[J]. 岩石力学与工程学报，2009，28(增2)：3770-3775.(GUO Qinglin，WANG Xudong，XUE Ping，et al. Research on spatial distribution and relations of salinity and moisture content inside rock mass of low-layer caves in Dunhuang Mogao Grottoes[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(Supp.2)：3770-3775.(in Chinese))
[8]
BERNER R A. Rate control of mineral dissolution under earth surface conditions[J]. American Journal of Science，1978，278(9)：1235-1252.
[9]
刘再华，DREYBRODT W，韩军，等. CaCO3-CO2-H2O岩溶系统的平衡化学及其分析[J]. 中国岩溶，2005，24(1)：1-14.(LIU Zaihua，DREYBRODT W，HAN Jun，et al. Equilibrium chemistry of the CaCO3-CO2-H2O system and discussions[J]. Carsologica Sinica，2005，24(1)：1-14.(in Chinese))
[10]
刘琦，卢耀如，张凤娥，等. 动水压力作用下碳酸盐岩溶蚀作用模拟实验研究[J]. 岩土力学，2010，31(增1)：96-101.(LIU Qi，LU Yaoru，ZHANG Feng¢e，et al. Study of simulation experiment for carbonate rocks dissolution under hydrodynamic pressure[J]. Rock and Soil Mechanics，2010，31(Supp.1)：96-101.(in Chinese))
[11]
刘琦，卢耀如，张凤娥，等. 温度与动水压力作用下灰岩微观溶蚀的定性分析[J]. 岩土力学，2010，31(2)：149-154.(LIU Qi，LU Yaoru，ZHANG Fenge，et al. Qualitative analysis of microcorrosion of limestone induced by temperature and hydrodynamic pressure[J]. Rock and Soil Mechanics，2010，31(2)：149-154.(in Chinese))
[12]
佘敏，朱吟，沈安江，等. 塔中北斜坡鹰山组碳酸盐岩溶蚀的模拟实验研究[J]. 中国岩溶，2012，31(3)：234-239.(SHE Min，ZHU Yin，SHEN Anjiang，et al. Simulation experiment for the dissolution of carbonate rocks of the Yingshan formation on the northern slope of Tazhong uplit[J]. Carsologica Sinica，2012，31(3)：234-239.(in Chinese))
[13]
何宇彬，金玉璋，李康. 碳酸盐岩溶蚀机理研究[J]. 中国岩溶，1984，(2)：17-21.(HE Yubin，JIN Yuzhang，LI Kang. An experimental study of carbonate rock corrosion mechanism[J]. Carsologica Sinica，1984，(2)：17-21.(in Chinese))
[14]
聂继红，韩宝平. 碳酸盐矿物的微观喀斯特研究[J]. 分析测试技术与仪器. 1995，(2)：33-37.(NIE Jihong，HAN Baoping. Study on micro-mechanism karst of carbonate minerals[J]. Analysis and Testing Technology and Instruments，1995，(2)：33-37.(in Chinese))
[15]
韩宝平. 微观喀斯特作用机理研究[M]. 北京：地质出版社，1998：25-28.(HAN Baoping. Microcosmic mechanism study of Karstic process[M]. Beijing：Geologic Press，1998：25-28.(in Chinese))
[16]
闫志为，张志卫. 氯化物对方解石和白云石矿物溶解度的影响[J]. 水文地质工程地质，2009，36(1)：113-118.(YAN Zhiwei，ZHANG Zhiwei. The effect of chloride on the solubility of calcite and dolomite[J]. Hydrogeology andEngineering Geology，2009，36(1)：113-118.(in Chinese))
2014, Vol. 33 
