Experimental study on permeability properties of damaged sandstone specimen in compression

摘要：

This paper used MTS815.02 Electro-Hydraulic Servocontrolled Rock Mechanics Testing System to conduct a water seepage test in a sandstone specimen under triaxial compression condition. Mechanical parameters of the specimen and the transient values of the seepage pressure differences at the twelve testing points in completely stress-strain process of the sandstone specimen were measured. From the measured values, the damage values and permeability of the specimen at different stress stages of the sandstone specimen were calculated. Through the analysis of the experimental results, the law that the permeability varies with the damage value of the sandstone specimen was obtained. From the perspective of the damage development of the sandstone microstructure, the water flow mechanisms in different stress stages of the sandstone were discussed.

关键词： elastic modulus seepage damage crack

作者: QIN Yue-ping LUO Wei LIU Wei Wang Xiao-jun HAO Yong-jiang

作者单位: State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083,China

会议类型: 国际会议

会议名称: The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)

会议地点: 北京

会议语种:英文

页码: 135-140

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）