花岗岩风化残积土海崖崩解过程的室内试验研究  

In-door Experiment of Granite Weathered Residual Soil Disintegration at Sea-cliff

作　　者：李忠[1] 刘勇文[1] 赵纪飞[2] LI Zhong;LIU Yongwen;ZHAO Jifei(Yellow River Conservancy Technical Institute, Kaifeng 475004, Henan, China;School of Geologieal Engineering and Survey ng, Chang＇an University, Xi＇an 710054, Shaanxi, China)

机构地区：[1]黄河水利职业技术学院,河南开封475004 [2]长安大学地质工程与测绘学院,陕西西安710054

出　　处：《水力发电》2018年第6期107-110,共4页Water Power

基　　金：河南省高等学校重点科研项目(18B570007)

摘　　要：采用自行开发的一套读数准确且使用方便的崩解仪,测试了花岗岩风化残积土在遇到海水时的崩解性。结果表明,花岗岩风化残积土的崩解模数随时间的变化呈现"S"形,随着时间的持续,土体依次以粒状→块状→粒状的形式产生崩解;土体含水量越高、压实度越大、细粒含量越高,土体崩解性越小;花岗岩风化残积土崩解的基本条件为含水量小于30%,压实度小于95%,细粒含量小于70%,崩解速率在0.1 mm/min以内。A self-developed disintegration test instrument which is accurate-reading and easy-to-use is used to test the disintegration of granite weathered residual soil （GWRS） in the face of seawater. The results show that, （a） the disintegration modulus of GWRS is changed over time with an S-shaped curve, and with the passage of time, the soils are disintegrated in the form of granular disintegrating→block granular→granular disintegrating; （b） the higher soil moisture content, the greater the degree of compaction and the higher the content of fine particles, the disintegration degree of GWRS would be smaller; and （c） the basic conditions of GWRS disintegration are the moisture content less than 30%, the compaction less than 95% and the content of fine particles less than 70%, and the disintegration rates of CWRS are within 0. 1 mm/min.

关 键 词：土工试验 花岗岩 风化残积土 崩解 海崖 

分 类 号：TU411.91[建筑科学—岩土工程]