Experimental study on the expansive deformation of red sandstone of Hongshanyao

• 来源期刊: 煤炭学报（英文版）
• 年，卷（期）: 2004,（1）
• 页码范围: 20-23
• 页数: 4页
• 语种: 英文

摘要

An experience formula of expansive strain and stone taken from a foundation pit of Hongshanyao Project (HSYP) in Nanjing was described. It is clear that the curve of expansive strain-water content is a logarithm. In the meantime, the relation of expansive strain with time was studied and the importance of expansive stabilization time was illuminated. The experiment results indicated that the water content has a tremendous effect on peak expansive and steady expansive deformation of swelling red sandstone.