ÌâÄ¿ÄÚÈÝ
2010Äê11ÔÂ5ÈÕ£¬ÔÚн®ÕÙ¿ªµÄ¡°Òý²³Èë½®¡±£¨Ö¸Òý²³º£Ë®½øÈëн®£©ÑÐÌֻᣬÒýÆðÁËÈ«¹úÓßÂ۵Ĺ㷺¹Ø×¢¡£ÆäÖÐÒ»¸ö·½°¸ÊÇ£º´ÓÌì½òÈ¡Ë®£¬ÓÉ»ÆÆ캣-¿â²¼ÆëɳĮ-ëÎÚËØɳĮ-ÌÚ¸ñÀïɳĮ-ÎÚÀ¼²¼ºÍɳĮ-°Íµ¤¼ªÁÖɳĮ£¬×ߺÓÎ÷×ßÀÈ£¬¾ÊèÀÕºÓ×ÔÁ÷½øÈëÂÞ²¼²´¡£´Ë·¾¶ÖÐ×î¸ßº£°ÎԼΪ1200m£¬´ÓÂÞ²¼²´µ½ÏÂÓεݬ¶¡ºþ£¬ÓÖÓнü1000mµÄÂä²î¡£´Ë·½°¸ÊÇ·ñ¿ÉÐУ¬Éæ¼°µ½»·¾³¡¢ÄÜÔ´¡¢¼¼ÊõµÈ¶à·½ÃæµÄÒòËØ¡£ÏÂÃæÎÒÃǽö´ÓÄÜÁ¿½Ç¶ÈÀ´·ÖÎöÕâ¸ö·½°¸¡£È¡ÖØÁ¦¼ÓËÙ¶Èg=10m/s2£¬Ë®µÄÃܶȦÑ1£½1.0¡Á103kg/m3¡£
£¨1£©Í¨¹ý¹ÜµÀÌáÉýº£Ë®£¬µçÄܵÄÀûÓÃÂʦÇ1=60%£¬½«1¶Öº£Ë®ÌáÉýµ½º£°Î1200m£¬ÐèÒªºÄ¶àÉÙµçÄÜ£¿ÀûÓÃË®µÄÂä²î·¢µç£¬·¢µçЧÂÊҲΪ¦Ç1=60%£¬ÔÚ1000mµÄÂä²îÖÐ1¶ÖË®¿ÉÒÔ·¢¶àÉÙµçÄÜ£¿
£¨2£©Èç¹ûÿÄêµ÷4¡Á109m3º£Ë®Èë½®£¬¾¡¹ÜÀûÓÃÂä²î·¢µÄµç¿ÉÒÔÈ«²¿ÓÃÀ´ÌáÉýº£Ë®£¬µ«»¹ÐèÒª¶îÍâÌṩµçÄÜ¡£
£¨i£©¶îÍâÐèÒªµÄµçÄÜ¿É´ÓÈýÏ¿Ë®µçÕ¾ÊäËÍ¡£ÒÑÖªÈýÏ¿Ë®µçվˮ¿âÃæ»ýÔ¼1.0¡Á109m2£¬Äêƽ¾ùÁ÷Á¿Q=5.0¡Á1011m3£¬Ë®¿âË®ÃæÓë·¢µç»úËùÔÚλÖõÄƽ¾ù¸ß¶È²îh=100m£¬·¢µçÕ¾µÄ·¢µçЧÂʦÇ1=60%¡£Çó£ºÔÚÒ»ÄêÖС°Òý²³Èë½®¡±¹¤³Ì¶îÍâÐèÒªµÄµçÄÜÕ¼ÈýÏ¿µçÕ¾·¢µçÁ¿µÄ±ÈÀý¡£
£¨ii£©ÎÒ¹úÎ÷±±µØÇø·çÄܳä×㣬¶îÍâÐèÒªµÄµçÄÜÒ²¿Éͨ¹ý·çÁ¦·¢µçÀ´½â¾ö¡£Í¨¹ý·çÂÖ»úÒ»¸öҶƬÐýתһÖÜɨ¹ýÃæ»ýµÄ×î´ó·çÄÜΪ¿ÉÀûÓ÷çÄÜ¡£È¡¿ÕÆøÃܶȦÑ2£½1.25kg/m3¡£Ä³·çÁ¦·¢µç»úµÄ·¢µçЧÂʦÇ2=40%£¬Æä·çÂÖ»úÒ»¸öҶƬÐýתһÖÜɨ¹ýµÄÃæ»ýS=400m2¡£Ä³µØÇø·çËÙ²»µÍÓÚ¦Ô=10m/sµÄʱ¼äÿÄêԼΪ5500Сʱ£¨ºÏ2.0 ¡Á107s £©¡£ Çó£ºÔڸõØÇø½¨¶àÉŲ̀ÕâÑùµÄ·çÁ¦·¢µç»ú²ÅÄÜÂú×ã¡°Òý²³Èë½®¡±¹¤³Ì¶îÍâÐèÒªµÄµçÄÜ£¿
£¨1£©Í¨¹ý¹ÜµÀÌáÉýº£Ë®£¬µçÄܵÄÀûÓÃÂʦÇ1=60%£¬½«1¶Öº£Ë®ÌáÉýµ½º£°Î1200m£¬ÐèÒªºÄ¶àÉÙµçÄÜ£¿ÀûÓÃË®µÄÂä²î·¢µç£¬·¢µçЧÂÊҲΪ¦Ç1=60%£¬ÔÚ1000mµÄÂä²îÖÐ1¶ÖË®¿ÉÒÔ·¢¶àÉÙµçÄÜ£¿
£¨2£©Èç¹ûÿÄêµ÷4¡Á109m3º£Ë®Èë½®£¬¾¡¹ÜÀûÓÃÂä²î·¢µÄµç¿ÉÒÔÈ«²¿ÓÃÀ´ÌáÉýº£Ë®£¬µ«»¹ÐèÒª¶îÍâÌṩµçÄÜ¡£
£¨i£©¶îÍâÐèÒªµÄµçÄÜ¿É´ÓÈýÏ¿Ë®µçÕ¾ÊäËÍ¡£ÒÑÖªÈýÏ¿Ë®µçվˮ¿âÃæ»ýÔ¼1.0¡Á109m2£¬Äêƽ¾ùÁ÷Á¿Q=5.0¡Á1011m3£¬Ë®¿âË®ÃæÓë·¢µç»úËùÔÚλÖõÄƽ¾ù¸ß¶È²îh=100m£¬·¢µçÕ¾µÄ·¢µçЧÂʦÇ1=60%¡£Çó£ºÔÚÒ»ÄêÖС°Òý²³Èë½®¡±¹¤³Ì¶îÍâÐèÒªµÄµçÄÜÕ¼ÈýÏ¿µçÕ¾·¢µçÁ¿µÄ±ÈÀý¡£
£¨ii£©ÎÒ¹úÎ÷±±µØÇø·çÄܳä×㣬¶îÍâÐèÒªµÄµçÄÜÒ²¿Éͨ¹ý·çÁ¦·¢µçÀ´½â¾ö¡£Í¨¹ý·çÂÖ»úÒ»¸öҶƬÐýתһÖÜɨ¹ýÃæ»ýµÄ×î´ó·çÄÜΪ¿ÉÀûÓ÷çÄÜ¡£È¡¿ÕÆøÃܶȦÑ2£½1.25kg/m3¡£Ä³·çÁ¦·¢µç»úµÄ·¢µçЧÂʦÇ2=40%£¬Æä·çÂÖ»úÒ»¸öҶƬÐýתһÖÜɨ¹ýµÄÃæ»ýS=400m2¡£Ä³µØÇø·çËÙ²»µÍÓÚ¦Ô=10m/sµÄʱ¼äÿÄêԼΪ5500Сʱ£¨ºÏ2.0 ¡Á107s £©¡£ Çó£ºÔڸõØÇø½¨¶àÉŲ̀ÕâÑùµÄ·çÁ¦·¢µç»ú²ÅÄÜÂú×ã¡°Òý²³Èë½®¡±¹¤³Ì¶îÍâÐèÒªµÄµçÄÜ£¿
½â£º£¨1£©½«1Tº£Ë®ÌáÉýµ½º£°Î1200m£¬ÖØÁ¦ÊÆÄÜÔö¼ÓJ
ÓÉÓÚµçÄܵÄÀûÓÃÂÊΪ60%£¬ËùÒÔÐèÒªºÄµçJ
ÀûÓÃ1000mÂä²î£¬1TË®¿ÉÒÔ·¢µçJ
£¨2£©½«1Tº£Ë®ÊäË͵½°¬¶¡ºþ£¬¶îÍâÐèÒªºÄµç¦¤E0=E1£E2=1.4¡Á107J
ÿÄê´Ó²³º£Íåµ÷4¡Á109m3º£Ë®Èë½®ÐèÒª¶îÍâÓõ禤E=4¡Á109¡Á¦¤E0=5.6¡Á1016J
£¨i£©ÈýÏ¿Ë®µçÕ¾µÄÄê·¢µçE=¦Ñ1Qgh¦Ç1=3.0¡Á1017J
¡°Òý²³Èë½®¡±¹¤³ÌÐèÒªµÄµçÄÜÕ¼ÈýÏ¿µçÕ¾·¢µçÁ¿µÄ±ÈÀýΪ=18.7%
£¨ii£©¶Ôһ̨ÕâÑùµÄ·çÁ¦·¢µç»ú£¬1sÄÚ´¹Ö±Á÷ÏòҶƬÐýתÃæ»ýµÄÆøÌåÖÊÁ¿Îª¦Ñ2¦ÔS
·çÄܵÄ×î´ó¹¦ÂÊ=(¦Ñ2¦ÔS)¦Ô2=¦Ñ2S¦Ô3=2.5¡Á105W
Äê·¢µçÁ¿Ô¼W=¦Ç2Pmt=40%¡Á2.5¡Á105¡Á2.0¡Á107J=2.0¡Á1012J
ΪÂú×ã¡°Òý²³Èë½®¡±¹¤³Ì¶îÍâÐèÒªµÄµçÄÜ£¬Ð轨ÊýÁ¿n==2.8¡Á104£¨Ì¨£©
ÓÉÓÚµçÄܵÄÀûÓÃÂÊΪ60%£¬ËùÒÔÐèÒªºÄµçJ
ÀûÓÃ1000mÂä²î£¬1TË®¿ÉÒÔ·¢µçJ
£¨2£©½«1Tº£Ë®ÊäË͵½°¬¶¡ºþ£¬¶îÍâÐèÒªºÄµç¦¤E0=E1£E2=1.4¡Á107J
ÿÄê´Ó²³º£Íåµ÷4¡Á109m3º£Ë®Èë½®ÐèÒª¶îÍâÓõ禤E=4¡Á109¡Á¦¤E0=5.6¡Á1016J
£¨i£©ÈýÏ¿Ë®µçÕ¾µÄÄê·¢µçE=¦Ñ1Qgh¦Ç1=3.0¡Á1017J
¡°Òý²³Èë½®¡±¹¤³ÌÐèÒªµÄµçÄÜÕ¼ÈýÏ¿µçÕ¾·¢µçÁ¿µÄ±ÈÀýΪ=18.7%
£¨ii£©¶Ôһ̨ÕâÑùµÄ·çÁ¦·¢µç»ú£¬1sÄÚ´¹Ö±Á÷ÏòҶƬÐýתÃæ»ýµÄÆøÌåÖÊÁ¿Îª¦Ñ2¦ÔS
·çÄܵÄ×î´ó¹¦ÂÊ=(¦Ñ2¦ÔS)¦Ô2=¦Ñ2S¦Ô3=2.5¡Á105W
Äê·¢µçÁ¿Ô¼W=¦Ç2Pmt=40%¡Á2.5¡Á105¡Á2.0¡Á107J=2.0¡Á1012J
ΪÂú×ã¡°Òý²³Èë½®¡±¹¤³Ì¶îÍâÐèÒªµÄµçÄÜ£¬Ð轨ÊýÁ¿n==2.8¡Á104£¨Ì¨£©
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿