?·?????????

?????????????????????????????830026??

?  ????????????????????????30m???????????????????????????Χ????????????????????????????????п???????????????????????Ч???????????????ο???

????????????????????????????????????п??????

1??????

1.1?????

?ù???????2012???????????????ú????????????????????????,?????????????????????????á?????30m?????????????????????????16mm???????????12mm???????????????彽??????????????4.9 m??????10cm????????24cm????? 24cm???????????+0.5m?????????????????1.0m????1.0m??????????Ρ?

1.2??????

???λ????????????????????????????????????????6.4 m??????????????????????28m????????Χ???32 m?????????????????8.0m?????????????估???????????12??25??m????豣??????????????16.5m?????????????????????????????????Χ???????1?????

2??????????

2.1?????????

??1???????????????????????????????????????????????????????????????Χ??????????????????

??2???????????30m????Χ?????????????С??????????????????????????????????????????????п???в???????????

??3???????????????????????????????????????Χ??????????????????????????

2.2???屬?????

????????????????????????+0.5m??????豬???п????????п??Χ?????????????????Σ???????????ζ??????????45?????????????????12.5????????????????????????Χ???????Χ????в???????????п???????????п??

2.3????????

?????????????????е??????????????????????????????е??????????棻?????????????????????????

3 ???????

3.1?????п?

????????????????????飬???????????????????????????????????????????=270???п????L=??270??/360????D=11.5m?????????????????п????H=??5??10??????????????7.3????H=1.75m??

3.2???????

?????????????? ????С??????w=(1/3)??=1/3??24=8cm??????a=??1.0??1.5????=1.04??24=25cm???????b=??0.8??1.2??a= 1??25=25cm???????L=??0.6??0.8????=0.71??24=17cm?????????q =K??a??b????=2600??0.25??0.25??0.24 =40g?????????8????????????216????????????8.64kg??

3.3??????·

??????????????????????????????????÷?絼????????????????????????????Ms-5?α?????????????????????????????????磬????????

4??????У??

4.1??????У??

???α???????????????????????????????8.5m??????????????????????????????????????????????????ò????????????^[1]??

??У?Qmax????????????????8.64kg??V???????????????????cm/s???? K?????????й??????????ο???????K=50?? K???????????????????0.25??1.0?????????????0.25???????????й??????????????????=1.3??R???????????????????????8.5m?? ?????????????v=1.97 cm/s??????????????????а??????????????

4.2??????????У??

?????????????????????????????????????^[2]??

??У?Vt???????????????????cm/s??M???????????????????????????400t??G???????????g=9.8m/s2??H?????????????λ????,?13m????R???????????????????????????????????????6 m????????????????????30Mpa??Kt??????????????????????????????????????????????????????????Kt?1/3??4.09=1.36?????-1.80????????Vt=1.87cm/s????????????????????

4.3??????У??

???????????????????????????????????????е???鹫?????[3]??

L=70k^0.53

??У?L???????????????????????????m??k??????????λ???????????k=2.6 kg/m3????????????????????????±?????????????L=116m???????????У?????????ò????????????????????????????帲?????????Ч???????????

5??????????

5.1??????????

??1???????????????????????????????????????????????????????????????

??2???????????п?λ????????????????????????????????????????????????????????????????????????????????Ρ?

??3????????0.6 m????????п????1.2m????????????????????

5.2??????

??1???????????????????????2?????????1??????????????????λ?????12m??22m??29m??????????????????2.5m??3.0?????????3.5m??4m??

??2??????????????????????????????俪?????????20m??1.5m??1.5m??????

6????Ч???????

2012??4??15??11??00?????????????????????????????????????????δ?????????????????????????????????????????Ч?????á??????????????????????????????

??1???????????????????????????????????????????????п?????????????????????????????????????????????????????????????

??2???????????????????????軺???????????п??λ???????????帲??????????????Ч????????к?Ч???

?ο?????

[1]?л?????????????.??????????GB6722-2003??[S].???????й?????????磬2004.

[2]????. ?????????????????????????[J]. ????????2009,15??1????1-4.

[3]??????,?????.?????????????[M]. ????????????????,1995.

[4]????,??????,????,????. ??????120m?????????????????[J].????????2008,14??2????61-63.