三峡库区危岩体锚固计算方法及应用-陈洪凯

134200212TheChineseJournalofGeologicalHazardandControlVol.13No.4Jun.2002,(,400074):,,:;;;;:100328035(2002)0420059204:P642:A:2002204227;:2002206214:(95050508)(95060233)(2001BA604A0223):(1964),,,,,,.110,2001101820,211215m(),;1216314m,80,1020001219,20cm20,,304,,,[5,6];,;,,,,,2211::1/3,2/3:,,212:+():+():+()+13,23,3,3(1);,;1Tab.1Stabilityappraisestandardofdangerousrockmass(K)(K)(K)110110113113111111115115111111115115:K-33111,K2115,P0,115=(Wcos+P0cos)tg+cHsinWsin+P0sin,=+-90,P0=cHsin+Wcostg-115Wsin115sin-costgnnP0ldlm03,115=(Wcos-Psin+P0cos)tg+cHsinWsin+Pcos+P0sin,=+-90,P0=cHsin+(Wcos-Psin)tg-115(Wsin+Pcos)115sin-costg1Fig.1CalculatingmodelofFDRnnP0ldlm03122,K2115,P01,115=(Wcos+P0cos)tg+cHsinWsin+P0sin,=+-90,P0=cHsin+Wcostg-115Wsin115sin-costgnnP0ldlm02,115=(Wcos+P0cos)tg+cHsinWsin+P0sin2Fig.2CalculatingmodelofSDR,=+-90,P0=cHsin+Wcostg-115Wsin115sin-costgnnP0ldlm03,115=(Wcos-Psin+P0cos)tg+cHsinWsin+Pcos+P0sin,=+-90,P0=cHsin+(Wcos-Psin)tg-115(Wsin+Pcos)115sin-costgnnP0ldlm031306ZHONGGUODIZHIZAIHAIYUFANGZHIXUEBAO20023,K21152,115=12[t](H-e)2sin2+n0emdlm0sin(+)Wan0em=115Wa-12[t](H-e)2sin2dlm0sin(+)A=115Wa-12[t](H-e)2sin2dlm0sin(+)em=e0+12(n0-1)e,n0n012e-e0+2eA+e0-12e24n=n0l3,115=12[t](H-e)2sin2+n0emdlm0sin(+)Wa+Ph03Fig.3CalculatingofTDR,l(m);d(m);0(kPa);lm(m);();n0();em(m);e0(m);e(m)W(kN);P(kN),,P=W;H(m);();c00(kPa)()017;c11(kPa)();c(kPa)();c=(H-e)c0+ec1H,=(H-e)0+e1He(m);a(m);h0(m);[t](kPa)0174,,NW,510,,393,3,400kPa35,70kPa25,,,110mm,325,180kPa,:[1].[M].:.2001.1-28.164,:[2],.[M].:.2000.161-164.[3].[M].:.1990.1-55.[4].[M].:.1986.177-181.[5].[J].,1998,(3):63-66.[6].[J]..1999,(6):59-63.ThemethodofanchorcalculationofdangerousrockmassanditsapplicationintheThreeGorgesReservoirCHENHong2kai,WANGRong(InstituteofGeotechnicalEngineeringofChongqingJiaotongUniversity,Chongqing400074,China)Abstract:DangerousrockmassisoneofthetwotypicalgeologichazardsintheThreeGoressreservoirarea,anditiscausedbyfactorsofgeologicstrata,geomorphologiccharacteristic,fissurewaterpressureandearthquakeetc.Onthebasisofpossiblemodefordangerousrockmasstofracture,theauthorsdividedthedangerousrockmassintothreemodels.slidedangerousrockmass(SDR),toppledangerousrockmass(TDR)andfalldangerousrockblocks(FDR).Inthecourseofcontrolingdangerousrockmass,wemustselectthecontroltechniquesuchasdrain,clearance,bearing,anchorandretainetc.Tosomeextent,anchorisanimportantoneinthesetechniques.However,thereisnotanyreasonablemethodtomakeanchorcalculationofdangerousrockmass.Basedonthemainloadcomposefordangerousrockmasstofracture,anchorcal2culatingmethodisestablishedbylimitequilibriumtheoryandrockmassstructuretheory.Themethodhasbeengottentheextensiveapplicationincontrolinthisregion.Keywords:TheThreeGorgesReservoir;dangerousrockmass;controltechnique;anchorcalculating;application,20024,,16,104,,,,,:8,:100054;:[phone];63549493;(021)73174()26ZHONGGUODIZHIZAIHAIYUFANGZHIXUEBAO2002