Page 203 - 《水资源与水工程学报》2025年第1期
P. 203
!36 "!1 # & ' ( ) & * + , - Vol.36No.1
2025 $ 2 % JournalofWaterResources&WaterEngineering Feb.,2025
DOI:10.11705/j.issn.1672-643X.2025.01.22
ÆÇȺÉÊËÌ=i$Í4ÇDE
1 2 3
Urs , U t , u;o
(1. »!$ý\]T>C|঻ð;ÁªÓ, ;Á ;¦ 510403;2. ¬L& (ÜT]&Z,
å ¬ 411105;3. ³VTL& (ÜT]&Z, å ³ 410114)
F G: tJ5·üÚ_U¬GÔ*ߨÓ(bem ¢%&, F;Á§óÓ(bet45, ßt·
üÚ_Úz、 aGmc¨¨8Fb, c¼tTIGmÓ(8Ü×z, Ý{bz{$Káâ·
üÚ_~a´òmÓ(ǯܫ, JX¬ð«45·üÚ_Ó(be ¢%&m34。äåô
=20kPa Ét, Ë 2、4、6、8 Ú·üÚ
õ: aÓ(mÜ·üÚ_ÚzmÅ/ßô¡, F K=0.96 ~ σ 3
_3oÒÜkþGª 21.9%、33.8%、40.8%、43.1%, ªâÎÊúË 6~8 Ú·üÚ_3, ÜN%&; Ó
(beú)ýO¢m@NrzP, ²j·üÚ_ÚzmÅ/, y@NLotg, 0v, úÓ(¼f8½, I
áâx&m@NLo, ×yúÓ(¼Gµ³-Ifs½。45åLtÔ*ߨÓ(¼@NLof8"×á。
HIJ: Ó(; ·üÚ_; ¢%&; ¨b; ǯܫ
KLMNO:TV671;TU411.2 PQRST:A PUVO:1672643X(2025)01019909
Longterm stabilityofditchspoilslopesunderdrying-wettingcycles
1
3
2
CHENXiaoxuan,CHENChen,GUOYipeng
(1.GuangdongGeneralTeamofChinaConstructionMaterialsIndustryGeologicalExplorationCenter,Guangzhou510403,China;
2.CollegeofCivilEngineering,XiangtanUniversity,Xiangtan411105,China;3.SchoolofCivilEngineering,Changsha
UniversityofScienceandTechnology ,Changsha410114,China)
Abstract:Underdrying-wettingcyclicconditions,thelongtermstabilityofslopesfilledbyspoilfrom
ditchexcavationneedspecialattention.ThisstudyfocusesonthestabilityofaspoilslopeinGuangdong
Province.Laboratorytriaxialsheartestswereconductedundervariousnumbersofdrying-wettingcycles
andcompactionlevelstoobtaintheshearstrengthparametersofthespoilunderdifferentconditions.
Basedontheexperimentaldata ,amodifiedstrengthmodelintegratingdrying-wettingcyclesandcom
pactioneffectswasdeveloped ,whichwasthenusedtostudytheimpactofdrying-wettingcyclesonthe
longtermstabilityofspoilslopes.Thestudyfindsthatthestrengthofcompactedspoildecreaseswiththe
=20kPa,the
increaseofthedrying-wettingcycles.Forexample ,withsamplesatK=0.96andσ 3
peakstrengthofthespoildecreasedby21.9%,33.8%,40.8%,and43.1% after2,4,6,and8dr
ying-wettingcycles,respectively.Overall,thestrengthtendstostabilizeafter6to8cycles.Although
thesafetyfactorofthespoilslopeisrelativelyhighintheearlystagesofembankmentconstruction,itbe
comesinsufficientwithincreasingdrying-wettingcycles.Therefore ,itisessentialtotakeacertainsafe
tymarginintoaccountinthedesignofspoilsites,particularlywhentherearecriticalfacilitiesdown
stream.Thefindingsprovidevaluableinsightsintothesafetymargindesignofexcavatedspoilsites.
Keywords:spoil;drying-wettingcycle;longtermstability;triaxialtest;modifiedstrengthmodel
½, [QEL}mÓ(, t(ey34sT¯
1 ./01
_`|}, IfSÓ(¼。Ó(¼be%&
úWXT]»¯°Ô*ߨ、 W«P$.U> GµC\6REQE@N
-I, y%&
!"#$:20240704; %$:20240901
'()*: !"#$%&'()*+,(52208352); å§B^«%4x9+,(23C0061); å§#$%&'()*+
,(2024JJ6429)
+,-.: VÑÒ(1983—), =, åìñ6, D2,
T]G, ¢JKW('Q、 E^Eö.üXmTU。