(1. State Key Laboratory for Geomechanics and Deep Underground Engineering，China University of Mining and Technology，Beijing 100083，China；2. School of Mechanics and Civil Engineering，China University of Mining and Technology，Beijing 100083，China；3. Chinese Society for Rock Mechanics and Engineering，Beijing 100029，China；4. Beijing Zhongke Force Blasting Technology Co.，Ltd.，Beijing 101318，China)
Abstract：The effect of temperature gradient on water evaporation in rock is very important for controlling the development of rock relic disease in arid and semi-arid areas. To solve this problem，the evaporation law of surrounding rock in Mogao Grottoes was studied based on the lab experiments under the condition of diurnal temperature difference. It is abstracted as the evaporation model of an ideal capillary system controlled by humidity under the action of temperature gradient. The theoretical analysis is carried out by using Kelvin's formula，and the experimental results are verified. The results show that the more drier the area，the more influence of temperature on the instantaneous evaporation intensity should be considered；To control the instantaneous evaporation intensity of surrounding rock of Mogao Grottoes，it is necessary to strictly control the fluctuation range of environmental temperature difference，so it is located in the range of 0 ℃–3 ℃，otherwise，the effect is minimal. The results can provide guidance for temperature environment control and some basis for the selection of preventive protection measures for Mogao Grottoes murals.
张 芳1，2，侯欣莉1，2，刘文芳1，2，王 焯3，4，李鹏飞1，2，何满潮1. 昼夜温差条件下莫高窟围岩蒸发规律的实验研究[J]. 岩石力学与工程学报, 2018, 37(S1): 3196-3204.
ZHANG Fang1，2，HOU Xinli1，2，LIU Wenfang1，2，WANG Zhuo3，4，LI Pengfei1，2，HE Manchao1. The experimental study on evaporation law of surrounding rocks in Mogao Grottoes under diurnal temperature difference. , 2018, 37(S1): 3196-3204.
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2018, Vol. 37 
