【摘要】 某滑坡场区基岩主要为三叠系宝顶组泥岩段,以炭质泥岩为主,夹砂岩、粉砂质泥岩。针对该场区泥岩遇水软化的特性,将其分为层面组和层面裂隙组两种类型,用电镜扫描、X射线衍射、X射线荧光光谱、电感耦合等离子体以及离子色谱等测试手段,并结合岩石的物理力学试验分析其矿物成分、化学成分、微观结构及物理力学指标随饱水时间的变化。根据软化规律对泥岩(块)及泥岩结构面的软化阶段进行了划分,即分别为初始软化阶段、持续软化阶段和稳定软化阶段。更多还原

【Abstract】 The bedrock of a landslide area of an airport in southwest China is mainly carbonaceous mudstone,mixed sandstone and silty mudstone. According to the mudstone’s moistening soften characteristics,we divide the mudstone into two classifications,namely plane samples and fissure samples. By using scanning electron microscopy,X ray diffraction,X ray fluorescence spectrometry,inductively coupled plasma and ion chromatography,combined with the physical and mechanical analysis,we studied the variation law of mineral composition,chemical composition,micro structure and physical and mechanical indexes as well as the saturated time. Finally,the softening process is divided into three stages,the initial softening,continuous softening and stable softening stage.更多还原