Effects of Pore Water in Shear Strength of Weathered Red Mudstone in Lanzhou Area, China

• 责任者：He Lei (School of Water Resources and Environment ; China University of Geosciences ; Beijing 100083 ; China) ; Wen Baoping
• 刊名：Hydrogeology and Engineering Geology
• 出版年：2010
• 卷期：37(3)
• 关键词：水岩作用 ; water-rock interaction ; 风化岩土 ; weathered materials ; 抗剪强度 ; shear strength ; 甘肃 ; Gansu Province
• 页码：p.48-52
• 图表：2 illus., 4 tables, 10 refs.
• 分类号：1702
• issnNo：ISSN1000-3665
• isbnNo：CN11-2202/P

In this paper, the interactions between the weathered red mudstone and pore water in Lanzhou area, China were explored by means of direct shear testing. It was found that under the fast shearing condition, mechanical (pore water pressure), physical and chemical effects function together making shear strength variation of the weathered red mudstone, and that mechanical effect is the strongest. The physical and chemical effects are closely associated with abundance of clay minerals and soluble salt within the weathered red mudstone.