Ảnh hưởng của đặc trưng hệ số thấm của đất thân và nền đập đến vị trí đường bão hòa

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Huinh 86 KYThuat Tda so?n: Phdng Khoa h9c va C6ng nghC Truong Dai hqc Xay dUng DC: 56 55 duong Giai Ph6ng, quan Hai Ba Trung, Ha NOi DT: (04) 3869 1435; Fax.: (04) 3869 1684 E-mail: khcn.dhxd@gmail.com Website: httpJ/nuce.edu.vn Giay phep xuar bAn s6 320/GP-BTTTT ngay 2710212012,ln tai C6!g ty C6 phan rn qu6ng cao Au Viet Editor-in-ChieI Assoc.Prof.Dr. Pham Hung Cuong Deputy Editor-in-Chief Assoc.Prof.Dr. Pham Duy Hoa Managing Editors Assoc.Prof.Dr. Tran Van Lien Dr. Dinh Van Thuat Office Secretaries BA. Le Ngoc Yefl BEc. Phan ThiThanh Huyen BSc- Nguyen Ouynh Le EditorialBoard Assoc.Prof .Dr. Nguyen Viet Anh Dr. Le Kim Chau Dr. Nguyen Ngoc Cu Assoc.Prof.Dr. Dinh Quang Cuong Assoc.Prof.Dr' Pham Quanq Dung Prof.DSc. Pham Nqoc Danq Assoc.Prof.Dr. Nguyen Duy Dong Dr. Tran Hong Hai Assoc.Prof.Dr. Vu Huu Hai Assoc.Prof.Dr. Pham Huu Hanh Prof.Dr. Pham Khac Hung I\,1Sc. 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Doa LAnqu BANTINX BAN TIN HQITHAo, HQINGH!KHOAHQC,,,,., ,. , , ,.,.,,,,,,,,,,,,,,,,,,,,,,,,.,,,,,,,,3 KETQUA NGHIEN CUUVAUNG DIJNG 1. TruryngQudcThenh,Nguy6nTi6nNam,NguyinNgQcNhi 7 Nghi6n cou x6c dinh cac ih6ng s6 van hanh hqp i cara may khoan cAc nhdikhilam vlecvojgAu md 16nqd6y 2. Tnwtlg Qu6c Thanh, Nguy4n ven Manh 17 Tinh toAn luc can c6ng tacl6n th 6t bikhoan cAC nh6iki6u gau ', 3.TrAnDbcHA,TrenHoangAnh,Nguy6nviCtAnh,TrenHoeiSa1 26 I I Nghi"n "r, ,". oinh I du uqnghoachStt6 uuchoquatrinhxilinuoctha ham di?im6 than ['4ao I rna I | 4. DensThiThanhHuydn,TfinTh!vietlvga . 33 I I ^,r0","n, " rcruciusuourqr r,o, ocackl'Lda'lciootl'iHdNqi I I s. Nsuy\nDinhThi 40 I i xuhuonqph;ttriannhasi6ucaotAnqtrenth6gioivamots6ba hqckinhnghiemd6iv6iviCiNam 6. H6 Nggc Khoa Baoiriketc5u bao che nha s eu cao 6ng dVi6t Nam 7. Phqm Hoang Anh baitoan dem tren ndn dan h6ic6 didu klCn phlrctap N,4Oi phu,onq phep rnoi iin h toan x6l sau tai m6 cau trong di6u ki6n x6 nuoc du c g. Luu ThiDieu chinh, Luu COng Hnng 73 Anh hudns cia dactrung hC s6th5m cira d6t than ve n6n dap d6n viiriduong b5o hda THONG TIN KHOAHQCVAC6NG NGHE 1. DenThiLan 80 Cucsd hipu tritue cap b;ng docquy6n ki6u deng c6ng ngh 6p cho lo d6t ch6tihairen sinh hoat 2. VuongMinhDitc,D6DtcTh;ng,Tri,nNhatThenh,Nguv4nVanKhAnh a3 Gio thiCu ihanh polynre c6tsoi ihu9tinh (th6p polyme GFRP) THE LE BAI VIET GU DANG - - IIEU DIEM KHOA HQC - CONG NGHF 1. Doen Minh KhOi 87 I i6n q rdr 16ibao 16r drsar Li6,l lrLc p15o rer dia bar rla N6 aANTIN KHoAHQc -c6NG NGHEvADAOT40,,,,,. ,.,,,,,,,,,,.,., ,,,,.,,,.,,,,,,,,,,,,,,,,,,-,,,,., A9 rAp cHi Kr.ioA Hgc c6Nc r,r6HE xaYDUN" lqr;ii woRKsHoP AND PROJECT NEWS._._ _._.________________ 3 RESEARCHRESULIS A N D A P PLI CATIO N S 1.TruongQuocThanh,NguyenTienNan,NguyenNgocNhi 7 Research on determining the reasonab e operat ng parameterc of bored pile dr lling machines to lt extended bottom bucket 2. Truong Quoc Thanh, Nguyen Van Manh 17 Determ netheworking resistancetothebucketdrilling machine 3. TranDucHa Tran Hoang Anh, Nguyen WetAnh, han Hoai Son 26 Study on determ ination of o ptimiu m ch em cal dose for wastewater treatment in IMao khe coa rn ine 4. Dang Thi Thanh Huyen, Tran Thi Viet Nqa 33 Study onwaterdemand in Hano's residential a reas 5. NguyenDinhThi 40 Trend ofthesuperhigh- risebuidingdeve opment n the world a nd some experien ces for V etnam 6. Ho Ngoc Khoa 48 N,4a ntenanceofsuper h gh - rise bu lding cladd ng ln Vieinam 7. PhamHoangAnh 59 Analytica solution forbeams on e asticfoundation wilh complex condii ons 8. PhamThanhNam 66 Propose the new meihod for a butment ive - bed scou r - depth estimaiion 9.LuuThiDieuChinh,LuuCongHung 73 The etrfectofpermeabilily ofdam body and foundation on free surface SC IEN CE A N D T ECH NOLOGY I N FO RM ATI ON 1. DamThiLan 80 The domestic waste of treatment oven by combustion method was certified io make rnonopoly of industrialmode by Nauon al Office of lntelleciua Property 2. Vuong Minh Duc, Do Duc Thang, Tran NhatThanh, Nguyen Van Khanh .83 An ntroduction on Glass FiberRe nforced Polymer(GFRP) INSTRUCTIONSFORAU7HORS,,,,,.,,.,,,,,,,,,,,,,,, ,.,.,,,,,,,86 F OC AL TOPI C F OR S CI EN C E AN D TECH N O LO G Y 1. Doan Minh Khoi 87 About preservation of French arch tectu ra heriiage n Hano SCIENCE, TECHNOLOGYANDTRAINING NEWS ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,89 I noi ror I tin t Ni UBNDIi cua CLI tinh t{a I karE Ninh (T,' cac hod g'o' th dang ct Tnnng Namdr phrit ha I trr,img E thu T.dr UBND i Kiroa rE TS. LeV C'rorB . Tn ong I dao.9a $ dad c lap nin 622vr midn ai nham tt thuat uE ttuong a rrng dun xuat crrc -r*Ji, ,^" cHi KH'A Hqc c6,,ic "oru /AYD$ c h L@, Th! DiCu Chinhl , LtN C6ng Hing' T6m tit O ViCt Nam s6 lupng dAp dfu ve de beng det chdn V E ldn trong s6 cac ddp de xey dung. Ra reng an toan vd 6n dinh dep h nq ven d; n;u chdt li6n quan al6n sLr an todn khai thec cia c6ng tinh - ViCc tinh ben 6n qnh cia dAp d;t tong cdng trinh thiy lqi - lhiy di1n ph\ thu1c l6n veo kA que linh toAn thAn, x6c alinh vitri Dudng b6o hda (DBH)- Trong bei bao ney, hc gia ti6n henh so senh DBH xec dnh theo phuvng phep Thiy tw hac (TLH) cila Dupuit ve phdng phap Phen r haN han (PTHH), sau alo st] ttqng phung ph1p PTHH dd nghien cuu enh hu&ng cia dic ht lg hC s6thAn ciathan ve nen dqn vitri DBH. Cuoicnng, sOdungketgue nghiCn cuu ndy d6 phenfich 6n dinh cia dAp det Bu6n Ku6p. Tit kh6a: ThAm; dap dAt; dudng beo hda 6n dinh summary: ln Vbtnam, the number of eafth dams and dikes is accounted for a larye ponion. Obviausly,lhe clam stabilly is a key issue related to the ope@lion sately. The stabily cabulaton of embankment dam depends greatly on the permeability calculation result, pafticularly the frce suiace detetmination. ln this paper, the compaison befurcen lhe two frce surtaces which arc determined according to the Dupuit theory ancl the finite element method is canied out, then the linile element method is used to investigate the effect ofthe permeabilv caetricients of lhe dam body and foundation an the frce surface location. Finally, these rcsufts are used Io analFe the skbility ol Buon Kuop embanknent dam- Kewords: Permeabilw; embankment; free suiace; dam, stability \__ say u/a2ug chinh sila nsey 2afi/2013, ch6p nhAn d.ns 28/22a14 t. Md ireu Bai toan lh6m la m6t trong nhrng v6n ai6 quan trong trong lhi6t k6 va th cOng dap va c6c k6t c6u c6ng trinh thiy qi. Ba toanth6m coth6 duqcchia ra:bditoan thAm kh6ng 6p va baitoan lham c6ap D6ng tham qua dap d6l thuOc baitobn th6m khOng 6p. Trong baiioen thenr kh6ng 6p, v ecxac dtnh vitriDBH la oi g aiquanirAng nh6t DBHlabenphanc6chhaivingdetbaohdavad6tkh6ngbeohdanuoctll Vanda6ndinhmaid6cchiu6nhhudng16l on tL) ddng them -vitriDBH. Tuy nhi6n v Ccxdc dlnh vitri , laDB_lla"1019do_oia'rvala\;1ddoL'oc _91_rerc jJboi-a.r l-iercarrl'a-rod_q_[21 C6 mots6 phuong phbp x6cdinhvilriDBH nhu,phuong phApve ud th;m, apdvng li thuy6t Dupu t [3]. Tuy nh 6n, nha]ng phu,ong ph6p nay chi 6p dlrng cho nhDng truong hop vo' dieu kien b en don g an irong kh c6c c6ng trinh thlrc t6 thudng co didu k en b 6n phuc tAp n6n ihudng du,o-c g aibeng cac phuong ph6p s6 nhu phuong phep sa phenhOuh?n,phuongphapth6tichhOuharvaphu,ongph6pphantihnu h?n lal [6]. Th6ng thuong he s6 th6m cdra than dap s6 duoc x6cd nh chinh xac qua viec ey m5u dei dem n6nva 'fhs, KhoaXay dtmg COng trinhthiy. Trudng Daihecxay dtng. E-nail: luuthidieuchinh@nuce-edu.vn 'KS, Ban Quen U dq en hny dien 5. 'rap clii {iro4 4rc :oNG \chE- xaYDu'Nc -":^:, thinghiCm trong phdng ITlnen d0iin caythuong cao. Trong khivi6cx6c dinh chinh xac hC s6 tham cia ndn la m6t viec kh6 khAn do tinh phrlc tap cia didu kien dia chat va su th 6u chinh xac cLira tailieu dia ch;t1hu ih,p digc. DiCu liy d;r der \ho lhEr, ho v ec rh 6lle c6rg lrinh. Trongbabeonay,trlroch6tDBHcrlald?pd;lddngchitcovaithoalnuoc(VTN)litngtruduocxac dinh theo 2 phlrong phap TLH va PTHH, sau d6 phuong phep PTHH duoc s& dung d6 m6 hinh mot dap d6i ddng chat c6 VTN 5ng tru voicac truong hop he so lhim cua dAt than dap (Kd)va he s6 th6m cLla d6i n6n dap(K")thayd6iK"/K,=1+50lanva(/K"=1+50and6kheosetenhhudngciahos6lhemcnadSithandap vd nCn dap d6n vitricia DBH. Cu6icnng, k6t qua nay duoc 6p dung vao v 6c ph6n iich th6m qua than va n6n dap cong lrrnh lnjy diFr B rdr hu6p. ,o s;nh vol kaloua quan trac thlrc ld vd tu do danh g a van de 01 oinh crladap kh phen tich v6ik6l qua quan tr6ctham. Q z. elan ti"n oai to6n th6m qua dap arit 2.1 So senh Oa dA vitri DBH xec ilinh theo phtvdng phep TLH ve PTHH vdi truong hW dap dAng chittrCn nen lh'm nuoc hhu han c6 WN Eng tru 2. 1. 1 Sa dA ve c6ng thi.c xAc dinh DBH thea ph Lrtng ph1p TLH DLra vao c6ng lhOc cia Dupult, so d6 x6c dtnh DBH theo phlrong phap TLH cia dap dong ch51 tren n6nthSmnuochiiu h?nc6VTN 16ngtrualuocchiratrong Hinh 1 [8]. Hinh 1, SodA xAc djnh OBH thea phuong phap ILH cAa dapddhg chet tGn nen thin nDin hdu han ca VIN Eng tru Theosoddtlnhd Hinh'1,luu luong them don viqua m51c6i dap c6th6 xecdinh theo c6ng thlrc: H' H: tl H. ., r- rr (l) '"2L,,"L,.,+0.17 S&dung ph6p bi6n d6ltuong dlpong toen hoc cho phuong trinh (1), ta c6 phrlong trinhDBH sau day: \2) Theo phuong phap TLH, tinh toen tham v6i g a th 6i chuy6n d6ng tham qua dap va nin la doc lap nhau. Cu th6, khitinh them qua dap thi xem nAn la kh6ng them, cdn kh linh th6m qua ndn thi xem nhu tham chuydn dong trong 6ng di tD thuqng uu ra ha luu voi chiiru de trung binh 1*=nL. voiL.la chieu rong d6ydap, n ahesopl-L.hLdcvaoTvat0 Lynhier garl_idrnay"norgplJhopvo.h!ctev tha-qualhanva,rdnLrd nao cnng anh hlrdng len nhau. SU anh hudng qua lainay s6 duoc m nh hoa rO trong muc2.2. 2.1-2 Sa senh baal6vitriDBH xecdinh theo phuong phepTLH ve PTHH D6 c6 th6 so sanh DBH dlrqc x6cdinh theo hal phuong phApTLH va PTHH, motdap d6ng ch6ttren nenthem nuochilu han c6VTN lAngtruvo cacih6ngsd sau:H,=50 m;H, =45 m H-=10 m;T=20m;m, = 3,5;m,=3iKd= 10'm/s K"=5.10-m/s;rn,=2duocduavaophantich. Sau d6, giaiphuong trlnh (2)bang phuong phap thli dan s6 dlroc k6i qua toa d6 DBH xecdinh theo phuong phapTLH.D6ngtho s&dung phuong phapPTHH crlngsOchokdtquatoadoDBH. K6tquatoad6 DBH xacdinh theo haiphuong phep duoctrinh baylrong Bang 1 fx l,* Y,.I Du0ng I r-f-, ,=,ir;, r-f", *r)' +, Theo Ba c6slrchenh lec dudng ddng so dan d6n sais6l pn6igayu6ncc dugcthi6t k6 nl glnpchoc6cki PTHH nhem loi th6nss6dauve 2.2Phet 2.2-1 HC S0d!rn€ hC s6th6m coa hqp va bi6u die lhem cia d6tth r4p ciri KlroA Hec c6NG """- /AYEUXC I Hhh 2. t i aLa sa "d41. DBL th'a aheng onda Pllt1 \a tLh Behg 2. Sa sAnh toa dA DBH thea phnng phap ILH ve PIHH x 175 185 195 205 215 235 24s 255 265 275 zal 1,5 1,7 2.9 -3,6 -4,0 -4,6 4,9 5,1 5,2 1,9 0,t -9,1 -12,3 15.3 -18 6 -22,4 -27,2 -41,2 18,0 8,4 Theo Bang 2, ch6nh lech lqa dOOBH trung blnh cia harphuong phip TLH va PTH}] la 18,93%. SA d'i c6 su ch6nh l6ch khe lon nay adotinh lo6nth5nr b;ng phuong phapTLH dqa ken gleth 6t cua DupuI a cec dudng ddng song song va nem ngang, c6c dudng the song song, th;ng dung va vuong goc voidudng ddng, dan d6n sais6 ondacbietlakhic6b6triVTNtronglhandapkhienduongdongvadLlongthebitacdong,chi ph6igay u6n cong. Hon nOa,lrong thUc t6, didu kien biCn cia c6c baiben tham rat ph[rctap va VTN thLPong duqcthi6t k6 nham t6ng 6n dinh cong trinh, cho nCn phuong ph6p PTHH duqc kl6n nghldnng trong tinh io6n thi6lke.TuynhLdnvo uu di6m don gian, dc blroctinh toen tudng minh nen phuong phapTLH van c6 gia tri, ginp cho cac ky su dinh tinh va dinh luqng duqc k6t qua balio6n tham truocva sau khlap dung phuong phap PTHH nham Loai b6 ktp tho c6c sai s6t c6 th6 m5c phei trong qua trinh ihi6t lap m6 hinh tinh' khai b5o cec 2.2 Phenfichanh hvbngcia hCs6th^mciaditthenvanAn dAp di6n vitri DBH 2.2.1 HC s6then cita nen Eng: K,/Kt= 1+50 S&dqng phuong phap PTHH,ti6nhanh phan trch r.ot ch uar cec lrudng hop kh thayd6ituong quan hCs6th6mcL:rad6ithanvan6ndapd6v6ibaitoandapdalddngchatcoVTNangtr!,.Cacketquaduqct6ng hqp va bi6u dl6ntrCn cnng mothi;h v6d6 chothSysuthayd6icrlavitriDBH li6n quan al6ntuong quan he sd thSm cia d6tthan va ndn dap (xem Hinh3). Hihh 3. Ka qua xac dinh DBH thea PTHH voi cbc ttuong hop dap cb vfN Eng tr\i va Kn > Kd eang 1 - raadoDBF d dih tn.ooaMo phdD Tl H x 175 185 195 205 215 225 235 245 255 265 275 285 39,3 37,1 34,8 30,1 27.4 25,3 22,8 20,3 17,7 12,6 10,8 40,8 35,4 31,9 24,9 26,1 23.4 20,7 18,0 15,2 12,5 10,7 10,0 Duong beo hda xacdinh theo ca haiphuong ph6p duoctha hlen trucquan tr6n Hinh 2 OAF C6 VAITHOAI NL'dC LANC TR! NEN THTTI NLJdc HW I,]AN MNHL ' O OAP CO VAI TNOAT NUdC L{NG IRU rap cHi KHoA HQc csNG NGsq xaYDUila #;ft _ Kiit qua phan trch trong Hinh 3 cho th6y khiiSng ti s6 K/&= 1*50lan thivilriDBH c6 xu huong di rLonq. rdv10 not cach khiL he s6 tharr cJa r;r K , arg rang thrvi.fl DBH car g oic.rc,lJyer x.1619 phra nCn dap. K6t qua phan tich khang d nh vitricia DBH phu thu6cvao qs6 K/Kd. 2.2.2 He s6thAn ciadepEng: K/K,= 1+50 VoiI Lro,lg hop 'rgJoc iai. ruong lu m6. , hu6 , i;u lrLorg 1oo hhirlay doi trlolg quan t^e so lh;m cja d;t rhar va n6n dap do vo: bri loar dap dlil d6ng chrl , o VTN lang ru duoc tie'r ne11 phan trch. Ket qJa pl'ar licrduocr6nghAplai.ro.rgLung.nothrrl-vedacho.hbysurhdyd6icLavtr'DBH.ienqudnden luongquanhCs6lhemciad6tthanvandndapkh K,lonhonK"(xem Hinh4) OAP COVATIHOATNL/dCLANGIRI] Hinh 4. Kit que xec dlnh DBH thea PIHH voi ac truong h.N dep c6 vTN bnl tu ve Kn<Kd - Kdr qua phan trch trong cho thay Lhi tSng ti s6 KJK. = 1+50 an thi v triDBH c6 xu hLrong d ch chuy6n l6n tren, hay noi mot cach khac hC s6 th5m cia than dep Kd cang r5ng thi vitriDBH cang dich rcl_Ly6nlenIer.D6ngthoi<elqudcJ,lqcl-oi,layvilncdaDBHphurhJdcvao.isoK ^ (, 3. ungdung k6tque phsn tich vao tinhto6n 6n ilinh dap Bu6n Ku6p 3.1 Didu kiCn ilia cheft ia dAp Bu6n Ku6p C6ng trinh ihLly di6n Bu6n Ku6p c6 c6ng su6t l5p may 280MW va diCn lu'ong binh quan n;m 1.458,6x10' kwh, la c6ng trinh thiydiCn l6n ih, haidTay Nguy6n sau c6ng irinh Ya y. Trong giaidoan rhi6i k6, tuven thi6i k6 da ti6n hanh khao s6t dia ch6tva k6tque c6th6 m6ta ngdn ggn nhosau [9i: - Ceu inlcdia ch6ttaivttrindn dap gdm c6 02 pha bazan va su hi6n diCn cia top e(p)ddy 1=3m ngSn c6chgiirachIng. - C6 nhiAu blng chung v6tinh r6ng cna ndn dap khiquan sat beng camera. H 6n tuong sut cen khi khoan xay ra ph6 bi6n v6id6 suttLP 0.2m d6n hon 1m. - HC s6 ih5m trung binh cia tang d6 bazan bai x6p la 44ornlngd (tuong [rng O,5cm/s hay4OO00Lu); he s6thdmtrung binh cia 6ng de bazan d6csitxen kep 16 r6ng nrt nd la 237mlngal (tu,ong Llng 0,27cnrls hay21000Lu) R6t nhidu doan trong dia tang kh6ngth6lam thinghiCmthAm du,qcviluong tr6u hao nuoc qu6l6n. Xec dinh alSctinh ngan nu6c cia ope(B)giipa2 phabazan:nAnvaitr6idap hoantoen khd n6u hnh ti tang set e(p) trd lCn va rnfc nLrdc ngAm chixuet h 6n khi h6 khoan xuyen thing teng s6t nay d6 vao pha bazan bOndu6i. Do khoang cach cac h5 khoan l6n (>30m), n6n chua th6 dSnh gla duoc kha nSng i6n th6ng gira cac16.6ng trong tang da bazan 16 r6ng vd bql x6p. CU th6 k6tqua khao s6t dia ch6t khu vqc dap qua cacgiaido?n cho k6tqua hCs6them cia cac top det ai6 n6n dap nhu sau: -EA bazan (pha tren): 241=403m/ngd (21 000=36 0001u). - Lop 16 r6ng - botx6p:2 951=4 181m/ngd(260 000:370 O00Lu). - Ldp e(P):< 0,1m/ngd(<101u) -Da bazan (pha duoi):3mtren cr)ng: '1,1m/ngd(1001u). Con ta : < 0,sm/ngd (<501u) -Da cAt bot k6t h6 tang La Nga:< O,sm/ngd (<sOLu) 3.2x lam. NBn da bai x6p, nar soat sq Em ihL,Pc do dO d Vi tri bengvamqt X61 n OTT9-2 (m5 hdnh cac plri 241912014 dt nu6cthem h DBHthamur h 3.2KAtque quantric thentaidap Bu6n Ku6p Van dd lh6m qua depdSl trong thoi gian d;u am viec cLia dap l: y6u to quan trong nhSt can quan tam. NAn dap chinh Bu6n Ku6p chi y6u ta cac top da Bazan, dac b Ct ta top Bazan 6 r6ng ihatr6nxen kep bqtx6p, n6n hiCn tuqng th6m qua top nay rat phrtctap. Vi6c dp derc6cth 6t biquan tr6;th6m nhenr ki6m sodlsJlarr\,ieLrLad6ocl'1rBLonhLopaudrlhieldo,lg.roiohatidrh;rt^o1;n t-\j,ticacsot,.u thucdod6 denh g A 6n d nh tham cia dap. Vilri 5p dai thi6t biquan tr;cthem taica then ve ndn dap chlnh Bu6n Ku6p dlrgc chira trong mdt bang va mei citdoc dap chinh Bu6n Ku6prronq Hinh5. \\ :l:.t ;:; ':":. ' .a\ ro^!i.i.briMc!urRi.Ni!orr ;;:^-;-T , I - ffi;:l E, i* i;;nl Hinh 5- Mat bens ve met cit dac dap Buan Ku6p @ b6 tri ttu6t biquah tActhin ts1 X6t m6t mAl c6t di6n hlnh MCS g6m c6c h6 quan tr6c iham lhan dap: QTT9-1 (dinh dap 41S,5m), OTT9-2 (m6i he uu cao trinh 407,5m) va OTT9* (me ha luu cao trinh 402,5m) nhu trong Hinh 8 dd ti6n hanhcecphantichdanhge6ndinhtham.K6t qua quan tr6c thAm th6ng k6 iai I\,lCg tu 01/01/2010 den 24920'Odroc "1o tii l ong H r,r 6. 56 ieuoLar rrdc-1, r,roLll'am.h,raliotait\,4C9choLrdy: mlr, nu6cth6m ha th6p nhi6u (lil25+27m) so vo lvlNHL, ch6nh lech giala cAc h6quantric kh6ng cao, chOngt6 DBH th6m trong than dap la phn hop. a Hinh 6. Biau do kdt qua ctuan tkc thAn than dap hi nat cet I tlol BEuoO N NGAM rRoNG rHAN oAP - Mc a r,i.F cfri rlHla rior coiiG .rcuE gAYsU n #ffi 33 Phenfich heitoen thim qu a dap aret Bu6n Kudp IVorrr l . rrlh;. lreopl-LongphapPT'IH, ho^ aIc;,VCqdJo( ro.dl-or qrlinh7 Hinh7. MO hinhlinh nlim theophuong phapPTHH Tlr k6t qua phan tich, DBH x6c dinh duqc tu phuonq phap PTHH duoc br6u dt6n l16n cung m6l hinh v6 vo DBH tL) k6t qua quan lr6cthlrct6 ( Hinh 8 ). K6l qua so sanh cho th6yDBH thuct6 ha thap hon ret nhidu so v6iljithuy6t. Sd dic6 k6tqua nhuvay la v n-:h dap la lop da Bazan 16 r6ng pha lr6n xen k9p bqt x6p,hes6themthuct6cirandnr6tlonvalonhonnhieusovdigalrhCs6thdml6ytheotaill6uthetle,cho nAn vitriDBH biha th6p. Truong hqp ney hodn toan phi hop vo k6i qua phan tich th6m trong muc2.2.1. Hinh L Sa sanh DBHthea lithuy'tvaDBH quan tdc duoc 3.4 Phen fi ch 6n dinh cia dAp det Bu6n Ku6p D6 danh g a 6n dinh cira dap khiDBH th{ct6 thAp hon retnh Au so voiDBH tinh toen tronglhiet I'e, Uc gia la'l lJ ot.iFn l-arh prd,l lc,l on oi'r1cLa d?p tarVCg r,leo DBH ly I r rye. ,/d OBH oLdr lr;cd rO" el qua clr thA drlqcth6 h en trong Hinh 9ve Hinh 10. Hinh 9. Kdt qua ihh dn dlnh cia dep d MC9 thea DBH li thuyAt c6 K=1.651 so'18 -t. ffi t.o .i. hHcA r,, i.,"r. ';1.''FAYBtrSB{G rr::l ::::l ,::l .,1 TLi xe: vitriDBH b i, g 4. K6t HE S,. dap K" cang:: N6L' Ni;,. Tailieu tham 1. A. Ouria ' 2. G M sh'a issue 1, page 3. [,4. E. Frar 4. Nl Darba_ 5. C. S. Des 6. L. Lam D Geotechn c€ FiniteEleme- 7. Nguy6n C, //, Nhaxuetbi 8. Nguy6n xu dqng, Ha N0 S, EVNPECC l0.Banquen t I E MNDBi=T120