楠梓下大雨了 - 高雄
By Hedda
at 2021-04-25T12:53
at 2021-04-25T12:53
Table of Contents
: → Stockholm : 如果當初有建美濃水庫........ 04/25 09:34
即使2015年就決定蓋美濃水庫,
現在應該也還沒完成,
即使去年完成水不夠多還是一樣 XD
: 推 chipher : 高屏溪流量沒增加是因為先被乾旱土地吸走了,但是 04/25 10:36
: → chipher : 對伏流水還是有幫助的 04/25 10:36
: → StarLeauge : 沒下在山區都沒用,這波雨勢從海上來,撐不到山區 04/25 11:18
: → StarLeauge : 高屏溪流量從3.8只增加到3.9,昨天山區的雨也沒用 04/25 11:19
: → StarLeauge : 今天和明後天的午後熱對流,會較有幫助,值得期待 04/25 11:22
22日隘寮溪流域大暴雨,
結果高屏溪攔河堰流量完全沒動,
維持在 3.8cms,
昨天旗山溪與荖濃溪有進帳,
但高屏堰流量也幾乎不變,
一直到今天早上11:00才微幅上升到 3.9 cms,
往常只要有像這類的大範圍降雨,
高屏堰流量幾乎都能在10~18小時內出現明顯變化,
這個跟以往的情形完全不同,
若這兩天雨勢都是"真的有下"且儀器沒故障的話,
代表三月初之後高雄加大抽取伏流水,
讓河床下的空間變得更空,
下雨而來的地表水大量入滲到地底下去,
但是河床下的沙土間的空隙應該是沒壓密,
所以才能夠再吸收這麼多水,
可以間接推測抽取伏流水應該是可行的,
不至於造成地層下陷之類的問題,
尤其是這一、兩年大量開闢伏流水,
其實是有點屬於實驗性質的備援系統,
剛剛好遇到今年特大乾旱可以觀察一下~
--
即使2015年就決定蓋美濃水庫,
現在應該也還沒完成,
即使去年完成水不夠多還是一樣 XD
: 推 chipher : 高屏溪流量沒增加是因為先被乾旱土地吸走了,但是 04/25 10:36
: → chipher : 對伏流水還是有幫助的 04/25 10:36
: → StarLeauge : 沒下在山區都沒用,這波雨勢從海上來,撐不到山區 04/25 11:18
: → StarLeauge : 高屏溪流量從3.8只增加到3.9,昨天山區的雨也沒用 04/25 11:19
: → StarLeauge : 今天和明後天的午後熱對流,會較有幫助,值得期待 04/25 11:22
22日隘寮溪流域大暴雨,
結果高屏溪攔河堰流量完全沒動,
維持在 3.8cms,
昨天旗山溪與荖濃溪有進帳,
但高屏堰流量也幾乎不變,
一直到今天早上11:00才微幅上升到 3.9 cms,
往常只要有像這類的大範圍降雨,
高屏堰流量幾乎都能在10~18小時內出現明顯變化,
這個跟以往的情形完全不同,
若這兩天雨勢都是"真的有下"且儀器沒故障的話,
代表三月初之後高雄加大抽取伏流水,
讓河床下的空間變得更空,
下雨而來的地表水大量入滲到地底下去,
但是河床下的沙土間的空隙應該是沒壓密,
所以才能夠再吸收這麼多水,
可以間接推測抽取伏流水應該是可行的,
不至於造成地層下陷之類的問題,
尤其是這一、兩年大量開闢伏流水,
其實是有點屬於實驗性質的備援系統,
剛剛好遇到今年特大乾旱可以觀察一下~
--
Tags:
高雄
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