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1 36 3 1!!!!!!"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" !!!!!!", ( ),,,,,,, ; ; ; ; ; TE973.6 A (010) D /m; β / ; c /(m/s) ;, g, 9.81 m/s; [1], x /m;, /s,,,, [3],, 坠 (ρu)/, # 1, λρu D c 坠 (ρu) 坠 (ρu) 坠 (ρu & ) λρu ρg sin β D # $ & 坠 ρ = c c 坠 (ρu) ρ /(kg/m 3 ); u /(m/s); p /P; (1) λ ; () (),,, λu/d = α,, λu /D u, 5 ~ 0 m/s, 0.75 kg/m 3, m /s,

2 mm D = 508 ~ mm, p i (x,) λu /D u 1 /P, i = 1, ; 1, 0, λu / (4) (5) D = αu, α,, 1,, α [4] α ρu c 坠 (ρu) (3),, (3) 1 d p 軈 = c 1 /α, = d p 軈 = 坠 p 1 (0 < x <, > 0) = 坠 p ( < x <, > 0) p 1 (x,0) = p (x,0) = p H 1 (0,) = (,) p 1 (,) = p (,) 1 (,) (,) = f e k (k >0) (4) f /(kg/m 3 ); p H /P; /m; k /(s 1 ) (4) k,, k,, p 1 (0, 0 ) = b 1 p (, 0 ) = b (5) (4) (5), k, [5] (4) pce, d p 軈 i = sp 軈 p H, (i = 1, ) x p 軈 1(,) = p 軈 (,) d p 軈 1 d p 軈 x = 軈軈 x = = f s k (6) s pce ; p 軈 i(x,s) pce (6) (7) (4), ( 7) pce (8) (8) (5) (9), p 軈 1(x,s) = p H s p 軈 (x,s) = p H s f (s k) s 姨 f (s k) s 姨 cosh 姨 s ( ) cosh 姨 s x sinh 姨 s cosh 姨 s (x ) cosh 姨 s sinh 姨 s (7)

3 p 1 (x,) = p H f k p (x,) = p H f k b 1 = p H f k b = p H f k f, im 0 im 0 b 1 = p H f k b = p H f k f cos f cos = p = p p x ( ) cos sin cos ( ) f sin cos k 姨 cos ( x) sin sin e k 0 f cos mπ k m π (10) e k f cos mπ cos mπ x k m π e k f cos mπ e e k 0 f cos mπ m π 0 (1) m e k m π (p H p ) cos ( ) F 1 (,k) = b 1 p e k 0 (p H p ) sin (p H p ) cos F (,k) = (b p ) sin e k 0 (1), k 3,, [6], (13) n 1 k n 1 = m π cos mπ x k m π 0 (10) f = (p p H ) k (11) (11) (9), k (p H p ) n 1 k n 1 = n e mπ cos 1 m π k mπ cos (1) m 1 m π k m π e k F 1( n,k n ) n F ( n,k n n (p H p 0 ) n cos n ( n ) n b 1 p e kn sin 0 (p H p 0 ) n k n b p (p H p 0 )cos k n 姨 sin n n n e m π e 0 m π m π 0 (8) (9) (1) ) (13) (1) (13) (14), (15) mπn cos m π e 1 m π k n e kn 0 (p H p 0 ) (1)m cos mπ n m π 0 e 1 m π k n 0 (14)

4 n 1 n k n 1 k n < ε (ε ) (15) * n1, k*k n1 ; k* (11) f* 4 10 km, p H =,, 4.9 MP, p 0.1 MP,, ; = km, 1 1 k = (s 1 ) f = (kg/m 3 ) p 1 (0, 0 )/MP p (, 0 )/MP k f ,,, ;,, ;,, ,,,,, = 1.95 (km),,,, 50 m, [1]. [J]., 004, 3 km, f (7) 145. k,, []. [J].,006(1) 404. [3],. [M]., [4]. [J]., 199,14()1171. [5] Romnov V G. Inverse Probems of Mhemic Physics[M]. The Newhernd VNU Science Press, [6],. [M]., (1973 ),,,, 007,, 0091, 000 m m 3, 38 m 3 (IEA),, 113 m 3 76 m 3, 1 m 3 ( ), 009, 4 000, 5 m 3 /, 40 m 3 /

5 comprison RESEARCH & DISCUSSION (16) Effec of Wind od on Oi Tnk Sfey in Tnk Invered ifing Consrucion CHEN Kexu ( Coege of Eecromechnics, Souhwes Peroeum Universiy, Chengdu , Chin ), CHEN Cichng, ZHANG Ping, e. Absrc In Xinjing region, ges wih insnneous wind veociy over 40 m/s ofen pper in winer nd spring which bring chenges o invered ifing consrucion of rge nks. The invered ifing mehod for he consrucion of rge nks hs been noiced for is convenien operion, high efficiency nd sfey in oi nk consrucion. This pper nyzes he wind od on he oi nk using he CFD mehod. By nyzing he srucur srengh of hydruic ifing device using he finie eemen mehod, we ge he vriion reions of sress disribuion nd deformion of he vrious componens in he ifing device wih he wind speed in he key posiions. The resus show h he pressures on he exern w re posiive in he re wihin pproxime 60 bu negive in oher res, he pressures on he inern w re negive nd ess hn he exern pressures, cusing whoe nk ws o underke cenripe pressure; under he cions of nk w weigh componen nd rnsverse wind od, pison rod exers pressure on guide seeve of cyinder, cusing bigger sresses in he guide seeve. Therefore, o ensure he sfey of he guide seeve of hydruic cyinder is very imporn. Key words rge sorge nk; invered consrucion mehod; hydruic ifing; wind od; finie eemen nysis (1) Pipeine ekge Deecion in Gs Pressure Tes Sge Bsed on Mehod of Differeni Equion Boundry Idenificion TIAN Yun ( Oi & Nur Gs Engineering Schoo, Chongqing Universiy of Science nd Technoogy, Chongqing , Chin ), YANG Fn, ZHOU Huying Absrc A noniner pri differeni equion group is se up o describe he operion of pipeine nework bsed on coninuiy equion, momenum equion nd se equion, which is reduced o iner equion of he conducion equion by iner mehod. A iner pri differeni equion mode is deveoped o describe he singeekge in he gs pipeine nework during he gs esing sge for he firs ime, he nyic souion of which is deduced by pce inegr rnsform. Then he mhemic expression deermining he posiion, inensiy nd enuion coefficien of ekges is deduced fer wo ddiion condiions being decided. Bsed on h, he heorem on he exisence nd uniqueness of he posiion nd enuion coefficien of ekges is proved wih principe of conrcion mpping, nd he sbiiy esime is given. A s, ccording o he mhemic expression, compuer progrm is deveoped by srucuring he numeric ccuion form, nd hen some exmpes re ccued. The ccuion resus show h he heoreic vues fi he re vues we, which cn sisfy he ekge deecion requiremens in pressure es sge of he gs pipeine nework. Key words ong disnce pipeine; pressure es; ekge deecion; ekge mode; pce inegr rnsform; conrcion mpping (5) Effec of Snked Pipeying on er Bucking of Submrine Pipeine IU Yuxio ( Se Key borory of Cos nd Offshore Engineering, Din Universiy of Technoogy, Din ),I Xin, ZHOU Jing Absrc The snked pipeying mehod is n effecive wy o conro er bucking of pipeine, in 5