摘要
分析表明 ,控制无泥型软弱层带强度参数的主要因素是其物质组成和所赋存的地质环境 (地应力场 )。通过现场和室内完成的大量抗剪试验结果 ,从中建立出强度参数和各控制因素的关系式 ,最终以控制因素的变化规律去揭示软弱层带强度参数的变化规律 ,进而给出不同地段、不同类型软弱层带的强度参数值。
Shearstrengthparameterofweakinterbedisnotonlyanimportantsubjectfor hydroelectric,trafficandrailroadprojectdesigningandconstruction ,butalsoakeyproblem forengineeringgeologicalpropertystudyofweakinterbed .Rationalandcorrectstrength parametervaluingnotonlyprovidequantitativegeologicalfoundationtoslopeorsurroundingrockmassstabilityanalysiscontrolledbyweakinterbed ,butalso guidestrengthening designationofcorrelativegeologicalengineering .Throughanalysing ,mainfactorstocontrol shearstrengthparameterfpofno_clayweakinterbedareitsgranulometriccompositionand existedgeologicalenvironmentgeostress.Basedonalotofshearstrengthtestingresults,we establishthecorrelativeequationbetweenshearstrengthparameterfpdifferentcontrolling factors,forexamplegranulometriccompositiondimensionDanddrydensityρd,andreveal theparameter′schangingrule.Wefinallyobtainthevaluingmethodofshearstrength parameterfpofno_clayweakinterbedexisteddifferenttypeandregion .Obviouslythis correlativeequationbetweenfpandDorρd maypredicttheparameterfpofweakinterbed existedregionwherefpisdifficulttomeasure .Simultaneously ,thisvaluingmethodalsohas guidingsignificancetosimilartrafficandrailroadengineeringregion .
出处
《山地学报》
CSCD
2000年第1期52-56,共5页
Mountain Research
基金
国土资源部岩土工程开放实验室基金!(KF0 1 5 )
西南交通大学学科建设专项基金资助
关键词
软弱层带
强度参数
粒度成分
地应力
无泥型
Weakinterbed ,shearstrengthparameter,granulometriccomposition ,geostress
