西南红层地区泥化夹层演化过程中的微观特征研究

The Research of the Microscopic Characteristics of the Argillation Intercalations' Evolution Process in Southwest Red Bed Area

西南红层地区地质灾害频发，通常造成严重的人员伤亡和财产损失。泥化夹层在西南红层地区分布广泛，是斜坡岩体中工程特性最差的结构面，也是控制西南红层地区斜坡地质灾害的关键因素，常常引发各种工程地质问题。通过对不同期次不同水化作用强度的泥化夹层取样，进行室内试验研究分析，获取了西南红层地区泥质岩层~泥化夹层演化过程中矿物成分、化学元素和微观结构变化规律。根据试验结果将演化过程划分为三个阶段：离子交换吸附阶段、矿物溶解阶段、软化崩解阶段。

The red bed area in southwest of China often occurs many geological disasters, and causes serious casualties and property losses. The argillation intercalations were widely distributed in southwest red bed region, it was the worst of the engineering characteristics, structural planes in rock mass slope and was the key to red layer in southwest slope geological hazard control factors, along with all kinds of engineering geological problems. Based on many different period time sampling different intensity of hydration of clay layer, after the indoor experimental re-search and analysis, the mineral composition, chemical elements and microstructure change rule of the evolution process were obtained from argillaceous rock to argillation intercalations in southweast area. According to test results of experiment, the evolution process is divided into three stages：ion exchange adsorption stage, minerals dissolved stage, mineral production phase stage.