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TORRENTIAL RAIN CAUSES BARRIER LAKE, POTENTIAL LANDSLIDES |鹿谷小半天瀑布 土石堵野溪.出現堰塞湖

Good Morning Taiwan
2017-06-18
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The rain has continued in the south and brought disaster with it. At Nantou's Lugu Xiaobantian waterfall, the rain eroded the mountain and caused earth and stone to be washed down, blocking the river, so a barrier lake formed at the bottom. Although at present, there is no immediate danger, if it continues to rain, then 100 households downstream, may face being inundated with landslides. In addition, in Changhua, HuatanTownship industrial road has collapsed with large cracks 150 centimeters deep and 80 meters in length.


From the aerial shots of Xiaobantian waterfall, you can see a large area of shale and rocks which have blocked the river, and a barrier lake about the size of a playing field has been formed. As no earth moving machines can reach the site, it is being left to slowly move downwards by itself.

==MR. LIN resident, Lugu Township Chulin Dist.==
I saw the road completely washed away then I saw silt and rocks about two or three stories high.

The heavy rain has brought disaster to other regions in the center and south of Taiwan. Two waves of plum rain met with the southwest monsoon, and resulted in heavy rain in Nantou's Lugu mountain area. Local residents said the collapsed earth and rock from above the Xiaobantian waterfall has continued to slide, resulting the river below the waterfall being blocked, and forming a barrier lake. Although there is no immediate danger, if the water does not flow out and there is more heavy rain, 100 households downstream may face landslides of earth and rock.

==TSANG YUN-CHUNG Asst. Prof., NCGU Disaster Prevention Research Center==
During the next heavy rain, the water will be slowly flushed from the dam, now it is a barrier lake but it is overflowing. That is, the lake is at its highest point and is overflowing, but there is no danger.

There were also reports from Changhua of the Huatan Township industrial road collapsing. The ditches at the side of the road have collapsed and the asphalt road surface has broken into pieces, the road barrier is displaced and the whole road collapsed. Police officers rushed to the scene to alert the public and prevent accidents.

==LOCAL RESIDENT==
The road foundations were flooded with water and the surface of the road just sank, it just went hollow and sank. It has to be mended.

Local residents say the road is collapsed for about 80 meters and there are cracks about a meter deep. They worry the collapsed area will expand posing a danger to those using the road.

TRANSLATED BY:CLARE LEAR

大雨持續影響中南部,也陸續傳出災情!南投鹿谷「小半天瀑布」,因為大雨「沖蝕」山壁,造成土石沖刷、堵住野溪,在下方出現「堰塞湖」,雖然目前,沒有立即危險,但如果繼續下雨的話,位在下游的100戶住家,恐怕會面臨「土石流」侵襲。另外,在彰化、花壇鄉的產業道路,則是出現道路坍塌的狀況,馬路上,出現深度150公分、長度80公尺的裂縫。


透過空拍畫面可以看到,南投鹿谷小半天瀑布下方,山壁大片崩落,土石擋住河道,一整片黃泥水,面積約有操場這麼大,形成堰塞湖,由於機具無法抵達,只能讓黃泥水慢慢自然溢流排出。

==鹿谷鄉竹林社區居民 林先生==
看到路都淘空啦
之後往下一看
大約(淤積)兩三樓高

兩波梅雨鋒面加上西南氣流發威,為南投鹿谷山區帶來大雨,當地民眾說,崩塌地的土石不斷滑動,造成小半天瀑布下方的出水口受堵,最近才發現這個堰塞湖。雖然沒有立即危險,不過水排不出去,如果又再下大雨,下游100戶居民,可能面臨土石流侵襲。

==成功大學防災研究中心副主任 臧運忠==
在接下來豪雨期間
慢慢會沖刷它的壩體
因為現在現況看起來
湖水已經溢流了 所謂溢流
就是湖水滿到最高點
然後往下溢流了(暫無危險)

另外,彰化也傳出道路坍塌,花壇這條產業道路,連接一旁水溝嚴重塌陷,柏油路碎成塊狀,護欄也位移,道路持續坍塌,員警趕快到場戒護,就怕路過民眾發生意外。

==當地居民==
路基一直積水 就一直蓄水
路面就這樣坍啦
都淘空下去 不做不行啦

當地民眾說,道路坍塌大約80公尺,深度一米半左右,擔心崩塌範圍擴大,影響出入安全,而大雨還在中南部持續,當地居民擔心,雨如果不停,災情會越來越多。

記者 林健生 賴世杰 南投 彰化報導