摘要
利用自行研制的湿热环境深部软岩吸附气体实验系统对莫高窟砾岩试样进行了恒温恒湿条件下(温度25℃,相对湿度85%)的吸湿试验,获得了吸湿水质量随时间的变化曲线。研究结果表明:砾岩试样的吸湿率随时间变化可用指数函数进行拟合,吸湿速率随时间减小,最后趋于平稳。相同时间内,砾岩试样质量越大,吸收的吸湿水质量越大,但是吸湿率越小。研究结果可为揭示不同环境条件下莫高窟围岩吸湿规律提供参考。
Moisture adsorption test was conducted on conglomerate specimens of Mogao Grottoes under constant temperature and relative humidity （25 ℃, 85% RH） by self-developed test system for gas adsorption of deep soft rock in hygrothermal environment, the weight of specimen was periodically measured to determine the adsorbed moisture. Test data illustrate that the hygroscopic rate of conglomerate specimens with time can be expressed as exponential function approximately, hygroscopic velocity decreases with time, and finally becomes stable. In the same time, the bigger the quality of the specimen is, the greater the adsorbed moisture will be, but the smaller the hygroscopic rate will be. The results may provide a reference for revealing the moisture adsorption rule of surrounding rocks of Mogao Grottoes under different environmental conditions. Key
作者
何满潮
郝耐
HE Man-chao;HAO Nai(State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology （Beijing）, Beijing 100083, China;School of Mechanics and Civil Engineering, China University of Mining and Technology （Beijing）, Beijing 100083, China)
出处
《煤炭技术》
CAS
2018年第7期322-324,共3页
Coal Technology
基金
中国博士后科学基金项目(2015M571157
2016M601170)
甘肃省科技重大专项计划(1102FKDF014)
国家自然科学基金项目(41502323
41602308)
关键词
莫高窟砾岩
吸湿试验
恒温恒湿
湿热环境深部软岩吸附气体实验系统
conglomerate of Mogao Grottoes
moisture adsorption test
constant temperature and humidity
test system for gas adsorption of deep soft rock in hwrothermal environment
