Journal of Chemical and Pharmaceutical Research, 2013, 5(9): Research Article

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1 Ave onne Journ of Che n Phreut Reerh, 0, 5(9):68-7 Reerh Arte ISSN : COEN(USA) : JCPRC5 A rnton etho of Rppng up the rvere n the Yeow Rver ong Wenheng, Jng Enhu, Lu Xuee n L Junhu North Chn Unverty of Wter Reoure n Eetr Power, Chn Yeow Rver Inttute of Hyru Reerh, Chn ABSTRACT Aorng to the ehn of rppng up the Rvere n ftng oe of y ok, ontrute ftng ny oe of y ok roken. Conerng the one effet ftor of y ok fte (for expe, y ok enty, thkne, ehn trength, pek fow n eent onentrton, the urton of the foo proe, rver hnne orphoogy preter, fututon ftng fore n the veoty nreton of tton yer et. ) n the ot vere o onton onton, kng ue of the fexur trength experent t of y ok on Rppng up the otto rver reh, eth rt ftng ehn euton of y ok n ove t. The reerh reut enrh uton theory of "Rppng up the Rvere. Keywor: Rppng up the rvere ; Cy ok; frture; fexur trength; INTROUCTION Rppng up the rvere pe phenoenon of eent trnportng n hnne jutent reton uner opex fow tte n rvere ounry onton. Rppng up the rvere often e to trong rvere eroon, oete, foo pek n whe rvere ever eter eep, o tht the rvere n the wter eve roppe gnfnty, whe ourng ton often ue the n hnne grton, erouy ge the hyru engneerng ong rver nk. Sevente of t entury, the ueton of Rppng up the rvere h roue gret onern of wter onervny worker n hoe n ro. Preent the tuy etho of Rppng up the rvere proe n e ve nto three tegore: The frt etho the ue of the eure t of hyroog tton to nyze the wter n eent onton of "Rppng up the rvere ; The eon etho the ue of the onept of eent trnport pty to tuy the wter n eent onton when the y ok trtng. The thr etho the ue of the fue experent to ute the phenoenon of "Rppng up the rvere", nyze the ehn of "Rppng up the rvere", the oe of "Rppng up the rvere" n the wter n eent onton. Whether rvere uge ok n e fte, epenng on the one reut of vrety of onton, nung pre-tng pttern n jutent of rvere, uge enty n retve roughne, epote pee forton n thkne, epote pee ounry onton, the ehn trength of epote pee, pek fow n eent onentrton, the urton of foo, hnne orphoogy preter, yer vert putng preure. At preent, for the tuy of "Rppng up the rvere", eue reerh too, etho, ojeton n reerh ephe n o ffut, the rteron n rnnt ne of th ue t ok of unfe unertnng, the reerh terture of onerng one effet ftor of y ok fte n ehn trength of y ok h not yet foun. The uthor of referene [] ute the phenoenon of "Rppng up the rvere" through fue experent n ontrute yn oe of "Rppng up the rvere", n propoe the ntntneou upft fore tht ue y upper n ower urfe of y ok poeng fferent fututon preure wve propgton veoty the re ehn of "Rppng up the rvere". Th pper ontrut n ny oe of y ok roken fte e on the referene [] propoe ehn n oe of "Rppng up the Rvere", n onerng the oprehenve effet ftor of y ok fte n the ot unfvore o one onton, eth ehn euton of y ok rt 68

2 fte n ove. The reerh reut of th pper enrh the uton theory of "Rppng up the rvere", n prove the poty to oet t re-te of "Rppng up the rvere". The ftng oe of y ok roken "Rppng up the Rvere" often our n the eh n or rvere of "ry otto of the rver" n veron rver hnne. Soe worker who engge n hyroog oervton n Yeow Longen tton tht efore "Rppng up the rvere" phenoenon our, the gener tng ute erou n the rvere, n ongtun grent n ro-eton hpe h ertn egree of jutent. Rppng up the rvere" freuenty our n ove rvere onton, the reon tht eue th rvere ext fure, when the foo pe, Rppng up the rvere" re freuenty our n the rvere onton, the reon tht eue th rvere ext fure, when the foo pe, ne the oton wter oy n putng wter preure n fure, reutng the fure eveopent, kng the heon fore of roun y ok reue, thu, retng onton for hvng trutur trength y ok fte. or trong ret eroon perforne y ok, vng wter fow n the fure tng, the uge roun y ok eng oure, wth ourng to t, the vnt re of y ok growng, whe eetng the fte onton, the y ok w e fte. The gr of herrh truture rvere eng oure hown fgure. gture. the oe of y ok roken fte. In orer to ftte theoret ny, ung y ok hexheron, y ok ength, t wth, n thkne, the ength of ntever oure, the re of y roken A, the voue weght of y ok,the epth of y ok urfe to wter urfe h,uy wter enty,ope of wter urfe J,the grvtton eerton g. g. The gr of herrh truture rvere eng oure g. The gr of y ok roken ong EGH ro-eton The rt wter fow onton opute when y ok roken The fore ny of y ok roken hown n gure : g. The fore ny of y ok roken fte The front thrut fore of wter fow []: 69

3 C V g () Where, V the fow veoty of rvere, C the retng fore oeffent, the enty of uy wter, the wth of y ok, the thkne of y ok. the oppote reton of : C V g () vert her fore of y ok roken urfe, t oe not proue torue on the y-x, n e gnore. wter rg fore of y ok upper urfe: C V g wter rg fore of the y ok ower urfe,t oe not proue torue on the y-x, n e gnore. the weght of y ok: G g (4) P wter preure of y ok: P hg (5) P uoynt fore of y ok: P h g (6) the xu fow fututng upft fore[4]: x K JV (7) x Where, K ner oeffent, unt kg, rnge: ~4., J ope wter urfe. () G Conerng the ot unfvore o onton, et the y-x torue ne euton: P P M x G Where, M the y ok fexur trength, t gven y fexur tet. V M KJ g g (8) (9) The ntever ength of y ok oure n 0.0 / e t te pero ue epr foru to opute [5]: C t (0) Where, C rvere eroon oeffent, the rg fore of t prte roun y ok, the rt her tre when rvere uge oure, uk enty of rver eent. ow her tre of rvere : C V () 70

4 Where, C rg fore oeffent, t vue 0.4, re oeffent of the eent prte, t vue, 4 uy wter enty, prte ze of eent eroe, other yo efore. Ung verge prte eter of the ove tton roun y ok to uttute, Orgnzng the foru () to gve:. 0 6 V () The rt her tre of rvere tton []: A () Where, A oprehenve nfuene oeffent, t vue rnge 0.05~0.04, en vue 0.045, oeffent wth rete to eent expoure egree, t vue rnge etween 0 n, verge prte eter of eroe tton. Suttutng foru () n () nto foru (0), the foru of oure ntever ength n e otne: C 0. 0A / 0. 6 V A e (4) t 5 Cy ok eent en eter n the rnge of orer of 0 () gntue, y prte ny tet of y ok eent fro "Rppng up the rver otto", onerng eroe eent y n the trnton yer etween y yer n t jent epton yer, n therefore the en prte ze of eent eroe o eent n the 5 rnge of orer of 0 () gntue, the vre A n the rnge of orer of 0 ()gntue, n 0 0. A ( /, o e. Orgnzng the foru (4) to gve: C t 0. 6 V A (5) To V, vre, utneou euton (9) n (5) ove: C ta C tag KJ C t 0. M 0. 6g Let: 0 C ta C 6 t 0. M 0. the foru (6) w onverte to foru (7): p 0 Where, p Aorng to ovng root foru of three orer euton,we hve: C tag KJ (6) (7) 7

5 p p (8) The foru (8) nto euton (9), we n e ute V C, t,,,,, J, K, M, V. (9) CONCLUSION Th pper ontrut y ok roken fte ny oe e on "Rppng up the rvere " ehn n y ok fte oe. Coner the one effet ftor of y ok fte n the ot unfvore o onton onton (the xu r of fow fututng ftng fore), n ung fexur trength experent t of "Rppng up the rvere ", ethng ehn euton of y ok rt fte n to ove t. We n ee fro the ute foru: the rt fow veoty of y ok roken fte futon out rvere eroon oeffent C, eroon te t, uk enty roun of uge roun y ok, uk enty of y ok, uy wter enty, y ok thkne, rvere grent J, y ok fexur trength M, uge prte ze, the one effet oeffent of fow fututng upft fore. The foru urrenty the ot oprehenve foru of onerng the one effet ftor of y ok fte. Th pper reut enrh uton theory of "Rppng up the rvere" proe n prove the poty to pret whether foo e to "Rppng up the rvere" phenoenon. Aknowegeent Th reerh upporte y the Open Projet of Mntry of Wter Reoure Yeow Rver eent Key Lortory n Pu wefre nutry reerh n pe funng projet of Mntry of Wter Reoure (Grnt No ) n Progr for Innovtve Reerh Te (n Sene n tehnoogy) n Unverty of Henn provne (grnt No. IRTSTHN0). REERENCES [] Hn Quwe. 005, Journ of eent reerh, 4, pp: 5-8. [] He Wenhe, Co Suyou, Lu Xngnn. 00, hnee journ of theoret n ppe ehn, 5, pp: 6-. [] Jng Enhu, L Junhu,Co Wento, Zho Lnjun. 00, Journ of Hyru Engneerng, 4(), pp:8-87. [4] Jng Enhu, L Jun hu, Zho Lnjun Co Wento. 00, Journ of Hyru Engneerng, 4, pp: [5] Zhou Gng, Wng Hong, Sho XueJun, J ongong. 00, Avne n Wter Sene,, pp: