干密度和含水率对红黏土崩解特性的影响研究

Research on the Influence of Dry Density and Moisture Content onthe Disintegration Characteristics of Red Clay

红黏土在中国南方大量分布,由于其水稳定性较差,浸水后极易出现崩解现象,从而造成工程地质灾害。因此为了研究不同含水率和干密度下红黏土的崩解特性规律,以三明将乐动车站右侧取土场的红黏土作为试验土样,以含水率和干密度作为变量,通过湿化崩解试验,以最终崩解时间和最快崩解速率作为指标,研究不同含水率和干密度对红黏土崩解特性的影响。研究结果表明:红黏土的最终崩解时间与含水率和干密度呈正相关;红黏土的最快崩解速率与含水率和干密度呈负相关;红黏土的初始含水率越大或者初始干密度越大,其抗崩解特性越好。

Red clay is widely distributed in southern China.Due to its poor water stability,it is prone to collapse after immersion,resulting in the engineering geological disasters.Therefore,in order to study the disintegration characteristics of red clay under different moisture content and dry density,the red clay samples from the right side of the Ledong station in Sanming are used as experimental soil samples,with moisture content and dry density as variables.Through the wetting disintegration tests,the influence of different moisture content and dry density on the disintegration characteristics of red clay is studied by using the final disintegration time and fastest disintegration rate as indicators.The research results show that:the final disintegration time of red clay is positively correlated with its moisture content and dry density;the fastest disintegration rate of red clay is negatively correlated with water content and dry density;the higher the initial moisture content or initial dry density of red clay,the better its anti-disintegration characteristics.