摘要
研究了寒区冻融环境条件下软岩的水热迁移规律,对两种不同类型的软岩材料进行了开放系统下具有温度梯度的水热迁移实验研究.实验结果表明:不同类型的软岩材料水热迁移程度不同,试样中的石英矿物含量越高,温度场重新分布时间越长;温度梯度是水分迁移的主要驱动力,当温度梯度越大时,水分场则越快达到重新分布状态;孔隙率越高,则冻结过程越长.探讨了软岩材料的水热迁移机理及与冻土材料水热迁移的一致性与差异性.
The law of moisture and heat transfer of soft rock material was experimented under the condition of freezing and thawing. The two different kinds of soft rock material were experimented in the open system with temperature grads, and the results prove that the degree of the moisture and heat transfer is different with the different soft rock materials, the higher the content of quartz mineral in the sample, the longer the redistributing time of the temperature field is; the temperature gradient is the main driving power of the moisture transfer, the higher the grads, the quicker the moisture field redistribution is; the higher the porosity ratio, the longer the process of freezing is. The mechanism of moisture and heat transfer of soft rock material was analyzed, and then discussed the identity and difference of moisture and heat transfer between soft rock material and frozen soil material.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2006年第5期566-570,共5页
Journal of China Coal Society
基金
国家自然科学基金资助项目(40372119)
教育部优秀教师基金资助项目(2091)
关键词
软岩材料
冻融
水热迁移
soft rock material
freezing and thawing
moisture and heat transfer
