資源描述：
《平面滑動(dòng)型巖質(zhì)邊坡穩(wěn)定性極限分析上限法.pdf》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、JournalofEngineeringGeology工程地質(zhì)學(xué)報(bào)1004-9665／2011／19(2)一0176·05平面滑動(dòng)型巖質(zhì)邊坡穩(wěn)定性極限分析上限法王根龍①②伍法權(quán)②張茂?、?①中國地質(zhì)調(diào)查局西安地質(zhì)調(diào)查中心西安710054)(②中國科學(xué)院工程地質(zhì)力學(xué)重點(diǎn)實(shí)驗(yàn)室北京100029)摘要在極限分析理論框架體系的基礎(chǔ)上，提出了平面滑動(dòng)型巖質(zhì)邊坡極限分析上限法。該方法按照外力所做的功率等于內(nèi)力所消耗的功率，即滑體處于極限狀態(tài)時(shí)兩功率相等的條件——虛功率方程，綜合考慮作用在巖質(zhì)邊坡上的后緣裂縫靜水壓力
2、、沿滑面揚(yáng)壓力、重力、水平地震作用力、錨固力等外力，按照強(qiáng)度折減法，推導(dǎo)得出了巖質(zhì)邊坡穩(wěn)定性評價(jià)的極限分析上限解。錦屏一級(jí)水電站右岸泄洪洞引渠內(nèi)側(cè)工程邊坡屬于典型的多級(jí)臺(tái)階狀巖質(zhì)高邊坡，該邊坡巖體結(jié)構(gòu)為層狀結(jié)構(gòu)，變形破壞模式為平面滑動(dòng)。對引渠內(nèi)側(cè)巖質(zhì)邊坡穩(wěn)定性分析結(jié)果表明，極限分析上限法對平面滑動(dòng)型巖質(zhì)邊坡有較好的適用性。關(guān)鍵詞巖質(zhì)邊坡平面滑動(dòng)極限分析上限法中圖分類號(hào)：0319．56文獻(xiàn)標(biāo)識(shí)碼：AMETHoDoFUPPERBoUNDLIMITANALYSISFORPLANESLII)INGoFRoCKS
3、LoPESWANGGenlong~WUFaquan~ZHANGMaosheng~(①Xi0nCenterofChinaGeologySuwey，Xian710054)(②LaboratoryEngineeringGeo—Mechanics，ChineseAcademyofSciences，Beijing100029)AbstractInordertocalculateandcomparewiththetraditionalrigidcriticalequilibriummethod，thispaperp
4、utsforwardanewmethodofupperboundlimitanalysisforplaneslidingofrockslopeonthebasisoflimitanalysisthe—cry．Bytakingintoconsiderationoftheequivalentconditionbetweentheinternalenergydissipationproducedintheslipsurfaceandtheouterworkdonebyexternalforce，theuppe
5、rboundsolutionforplaneslidingofrockslopesta—bilityanalysiscanbededucedbymeansofstrengthreductionmethod．Thenewmethodcananalyzedifferentinflu-encingfactorsincludingthehydrostaticpressureinbackfissure，upliftpressurealongslipsurface，self—weight，horizontalsei
6、smicinertiaforceandanchorageforce．TheapproachingchannelinsideslopeofthespillwaytunnelintherightbankofJinpingFirstStageHydropowerStationisatypicalmultilevelstep-shapedrockslope．Therockmassstructureoftheslopeisstratifiedstructure，andthepotentialmodeoffailu
7、reisplanesliding．Thecalculationresultsshowthatthenewmethodofupperboundlimitanalysisisapplicabletoplaneslidingofrockslopestabilityandisconsistentwiththerigidcriticalequilibriummethod．Furthermore，itisausefulcheckingcalculationap—proachfortraditionalmethod．
8、KeywordsRockslope，Planesliding，Limitanalysis，Upperboundmethod$收稿日期：2010—03—27；收到修改稿日期：2010—05一l8．基金項(xiàng)目：中國博士后科學(xué)基金(20090450565)，交通部科技項(xiàng)目(200831822353)．第一作者簡介：王根龍，主要從事巖石力學(xué)與邊坡工程的工作．Email：wang2006@mail．iggcas．a(chǎn)c．cn19(2)王根龍等：平面滑動(dòng)型
