淮南钙质粘土单轴抗压强度试验研究  

Experimental study on uniaxial compressive strength of Huainan calcareous clay

作　　者：钟磊[1] 钟晶晶[2] 

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009 [2]安徽建筑大学土木工程学院,安徽合肥230022

出　　处：《安徽建筑工业学院学报（自然科学版）》2014年第2期74-77,共4页Journal of Anhui Institute of Architecture(Natural Science)

摘　　要：以淮南杨村矿副井井筒冻结施工为工程背景,以副井井筒穿越的典型土层钙质粘土为代表,进行-5℃、-10℃、-15℃、-20℃温度下,不同含盐度钙质粘土的单轴抗压强度试验。通过对含盐冻结钙质粘土单轴抗压强度试验,进行了室内试验研究,分析了淮南杨村矿钙质粘土在含盐冻结条件下的冻结强度随含盐量的变化关系,并讨论了淮南杨村矿钙质粘土在含盐冻结条件下的弹性模量随温度的变化规律;这对更好的指导冻结施工具有深刻意义。This article, taking the frozen auxiliary shaft construction of Yangcun coal mine in Huainan as the project background, using typical calcareous clay soil through the auxiliary shaft as representative, is tested on different salinity calcareous clay uniaxial compressive intensity test under tempera- ture -5 ℃ ,-10℃ ,-15℃ ,-20 ℃. By means of uniaxial compressive intensity test of salty freezing calcareous clay, research on laboratory test in this article is carried out, which analyzes the Changes in the relationship between mineral calcareous clay freezing intensity and salinity under freezing conditions of salinity in Yangcun mine of Huainan, and discusses elastic modulus variation with tempera- ture in the same condition. This has profound significance of a better guide to the freeze construction.

关 键 词：人工冻结法 含盐量 钙质粘土 强度 

分 类 号：TU445[建筑科学—岩土工程]