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ÔòP=¦Çv¡¤vu?=2.0¡Á1800=3600 t/d
3.2¯¸×³ß´ç¼ÆËã
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IVu1.0?1800?1.13?9.59 d?1.13JA25Vu1800УºË ??24.93 ½á¹ûºÏÀí
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3.3.1Ôü¿Ú¸ß¶È¼ÆËã
ѡȡe=1.20£¬C=0.58£¬,?=7.1t/m3, ÔòÔü¿Ú¸ß¶È
eP1.27?1.20?3600hz?1.27??1.45 22nrc?d10?0.58?7.1?9.59ȡhz=1.5 m
3.3.2 ·ç¿Ú¼ÆËã
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h1?hf?b?hz?a?b?1.5+1.3+0.5=3.3m ·ç¿ÚÊýÄ¿ n?2(d?2)?2?£¨9.59+2£©=23.18 È¡n=24¸ö
3.4 ËÀÌúƤ²ãºñ¶È
h0?0.0937Vud?2?0.0937?1800?9.59-2=1.8 È¡ h0=1.8 m
3.5 ¯ÑüÖ±¾¶¡¢Â¯¸¹¡¢Â¯¸¹¸ß¶È¼ÆËã
ѡȡ D/d=1.10 Ôò
D?1.10¡Á9.59=10.55m
D?dѡȡ?=81¡ã Ôò h2=tan81¡ã=2.88 È¡h2=2.9m
2УºË ?
2h2?=6.04 tan?=
D?d ?=81¡ã8¡ä ¯ºíÖ±¾¶¡¢Â¯ºí¸ß¶È
dѡȡ 1?0.68
DÔò d1=0.68¡Á10.55=7.17m È¡d1=7.2m ѡȡ h5=2.0m
3.6 ¯Éí½Ç¡¢Â¯Éí¸ß¶È¡¢Â¯ºí¸ß¶È
ѡȡ ?=82¡ã30¡ä
D?d110.55?7.2tan?? tan82¡£30¡ä=15.5m È¡h4=16m 22УºË? tan? =8.19 ?=83¡ã51¡ä ѡȡ Hu/D=2.55
Ôò Hu=2.55¡Á10.55=26.9m È¡Hu=27m Ôò h4?ÇóµÃ
h3?Hu?h1?h2?h4?h5=27-3.3-2.9-16-2.0=2.8m
3.7 УºË¯ÈÝ
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223
V1=¦Ð/4¡¤D¡¤h1=0.785¡Á9.59¡Á3.3=238.2 m ¯¸¹Ìå»ý
22 V?h(DD?dd?)??2.9?(10.552?10.55?9.59?9.592)=231m3 221212??¯ÑüÌå»ý
2 V?10.552?2.8=244.64m3 Dh3?3?44??¯ÉíÌå»ý
22V?h(DD?d?d)??16?(10.552?10.55?7.2?7.22)=1000m3 44111212??¯ºíÌå»ý
232=81.39 7.2?2.0mV?dh?51544??¸ß¯ÈÝ»ý
Vu=V?VVVV???12345
=238.2+231+244.64+1000+81.39
=1795.23m3
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