- Lay mL va thi nghim tinh khang nhiet dm di& tai cac vi tri 1dy mau clAt day bien.
5. Khao sat Khi tugn g Hai van 14p NCKT tuy6n cap din ngAm vuot bien 22k
± 220kV
a) Thu th4p, N th6ng hod tai lieu
- Tai HO khi tugng: Thu th:dp tai HO tir tram khi tugng lan On du an, so lieu phai bao dam lam clai din cho khu vtrc du. an.
- Tai HO hai van: Thu th4p tai HO tir tram hai van yang bi6n cila du. an.
- S6 HO thu th4p dunk phai bao dam tinh clang clan va du co. so. c16 tinh toan cac cildc trung khi tugng - thug hai van irng voi tan suat P=2%. phuc vu thiet ke cong trinh.
b) DiL tra khi tugng - thug van, hai van tai hi0 truemg - DiL tra ve luu thong duarng thily \Tang bien tuyen di qua.
- DiL tra thu thidp cac thong tin cac hi@l tugng thai tie't ctdc bi4 nhu song, giong , set, to loc, giO bao, sOng than...
- Khao sat diL tra mire de x6i la 1346. bi6n, mtrc nuac trieu clang cao nil& tai 02 hai diem tiep be..
- Khao sat Thay — Hai van hoc: tO'c dO clOng chat' va huong clang chay, nhi4 dO, de, man nook bi6n a cac dO sau khac nhau (tang day, tang giira va tang mat) sOng va chieu cao dm thily trieu. Trung binh 2km doc theo tuyen cap bo tri 1 diem do.
- LAy mL nuac bi6n thi nghim cac chi tieu hod Vi va vi sinh phuc vu xay dung cong trinh. Trung binh 5km lay 1 mL nuoc bien thi nghim.
c) Xay Ong cac tram nghim trieu 6. cac diem tip be., quan trac thug trieu
- ,O m6i di6m tip be., xay Ong tram quan trac mtrc nuac trieu, co th6 la tram
quan trac trieu trIrc ti6p hay tram nghim trieu to cliOng. DO cao diem "0" cila thuoc quan trac mvc nu& hay do cao diem "0" cila tram quan trac trieu to clOng dugc xdc dinh bang they chuAn ky thuldt tir 2 di6m do cao hang IV vira mai xay dung hoe da co trong khu vkre. Thvc hi'e'n quan trac,mixc,ntrac trieu trong suot thoi gian do sau. So lieu tir tram quan trac trieu qua xir 13", nham de xac dinh dO cao quoc gia cho cac diem do chi