花岗岩风化残积土层强度指标的对比试验  

Index Contrast Strength Test of Granite Weathered Eluvial Soil

作　　者：姚文花[1] 姚勇[1] 高加成[1] YAO Wen-hua;YAO Yong;GAO Jia-cheng(School of Civil Engineering,Jiaying University,Meizhou 514015,China)

机构地区：[1]嘉应学院土木工程学院,广东梅州514015

出　　处：《嘉应学院学报》2018年第5期52-55,共4页Journal of Jiaying University

基　　金：2016年广东省教育厅青年创新人才项目(2016KQ NCX157)

摘　　要：梅州是地质灾害多发易发的山区城市,花岗岩残积土类地质灾害是其中的主要类型.降雨是诱发该类地质灾害的主要原因,为了探明降雨对其影响,以畲江工业园土样为样品进行试验研究.试验结果表明花岗岩风化残积土层在天然状态下,结构密实,强度较高,稳定性好,但完全饱和后,其强度将下降60.0%以上,这也是降雨期间,特别是强降水时,土体易产生水土流失和滑坡泥石流等地质灾害的主要原因.Meizhou is a mountainous city that is prone to geological disasters,and the geological disasters of the debris of granite are the main types.Rainfall is the main cause of this kind of geological disaster,and to investigate the effect of rainfall,study the sample of the soil sample in the area.Test results show that the granite weathering eluvial soil layer under the natural state,compact structure,high strength,good stability,but after fully saturated,the intensity will drop by more than 60.0%,during the period of rainfall,especially the heavy rain,which is prone to soil erosion and soil of the main causes of landslide debris flow and other geological disasters.

关 键 词：花岗岩 残积土 强度 地质灾害 

分 类 号：TU45[建筑科学—岩土工程]