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1、JournalofEngineeringGeology工程地質學報1004—9665/2009/17(2)-0258-05基于數量化理論的巖堆穩(wěn)定性評價模型胡力繩①②王建秀①②葉沖①②(①同濟大學巖土及地下工程教育部重點實驗室上海200092)(②同濟大學地下建筑與工程系上海200092)摘要影響巖堆穩(wěn)定的定性因素難以在極限平衡、數值分析中全面反映和定量表述。數量化理論可通過定性指標定量化,充分考慮定性指標的影響?;跀盗炕碚摚岢鰩r堆穩(wěn)定性評價模型。根據巖堆組成物質及內部顆粒接觸情況進行結構分類;基于主因素分析,采用巖石單軸飽和抗壓強度(分為四級)、巖堆結構(分為四級)、地形
2、坡度(分為三級)及地下水發(fā)育情況(分為二級)4個評價指標建立了巖堆穩(wěn)定性評價模型。模型在云南水富一麻柳灣高速公路中的應用成果表明:影響巖堆穩(wěn)定性的主要因素是巖堆結構、巖石強度和地下水。關鍵詞道路工程穩(wěn)定性評價模型數量化理論巖堆中圖分類號:P642文獻標識碼:AMODELBASEDQUANTIFICATIoNTHEoRYFoRSTABILITYASSESS-MENToFRoCKDEBRISSLoPESHULisheng~WANGJianxiu①②YEChong~10)KeyLaborataryofGeotechnicalandUndergroundEngineeringofMn£o
3、fEducation,ron~iUniversity。Shanghai200092)((~DepartmentofGeotechnicalEngineering,TongfiUniversity,Shanghai200092)AbstractSomequalitativefactorsinfluencingthestabilityofrockdebrisslopesaredifficulttobequantifiedusinglimitequilibriumandnumericalanalysismethods.Quantificationtheorycantakefullcon
4、siderationabouttheinflu—enceofqualitativefactorsandcanbeusedtoquantifythem.Basedonthequantificationtheory,thestabilityassess—mentmodelofrockdebrisslopesarepresented.Accordingtothematerialcomposesofrockdebrisslopesandthecontactconditionofinnerparticles-thestructuralclassificationofrockdebrissl
5、opesalepresented.BasedonthemainfactorsanalysisIfourevaluationindexesareproposedtoestablishthestabilityassessmentmode1.Thefourin-dexesare(a)thesaturateduniaxialcompressiverockstrength(dividedintofourlevels),(b)thestructureofrockdebris(dividedintothreelevels),(C)theslopeofgroundsurface(dividedi
6、ntothreelevels),and(d)thecondi·tionsofgroundwater【dividedintotwolevels).TheapplicationofthemodeltoYunnanShuifu—Maliuwanhighwayacquiredasortofpredictedvalues.Theyhaveagoodagreementwiththemeasuredvalues.Themodelcanbeusedforthestabilityassessmentofsimilarprojects.KeywordsRoadengineering,Stabilit
7、yassessmentmodel,Quantificationtheory,Rockdebrisslopes收稿日期:2008—0l一03;收到修改稿日期:2008—04—3O.基金項目:國家自然科學基金雅礱江水電聯合研究基金(50579097).第一作者簡介:胡力繩,地下建筑與工程專業(yè).Email:hu—lisheng@163.COB17(2)胡力繩等:基于數量化理論的巖堆穩(wěn)定性評價模型標,而且可以利用定性指標,從而更全面地反映影響1引言巖堆穩(wěn)定性的定性因素。巖堆是指巖石山坡在