礁溪溫泉挖百尺深 地層亮紅燈 - 宜蘭
By Eden
at 2015-04-21T17:41
at 2015-04-21T17:41
Table of Contents
http://udn.com/news/story/7266/850277
2015-04-21 03:00:56 聯合報 記者戴永華、林縉明/宜蘭縣報導
宜蘭縣礁溪溫泉區的溫泉水溫一直降,建商、住戶要取得更穩定的供水,也愈挖愈深,傳
出有建商把溫泉水井挖到一百多公尺深,地層安全已亮紅燈。專家指出,溫泉位於破碎斷
層帶,更容易成為土石災害的潛在危險區。
礁溪溫泉自救會長鐘本勇說,早期住家水井頂多鑿二、三十公尺,就能抽到四、五十度的
溫泉水,可是現在溫泉幾乎都被大型建案開挖工地時抽光,不少人花好幾萬元,再把溫泉
水井鑿到五十公尺深,可是過了一陣子之後,溫泉水又不熱了。
「住戶與建商搶挖水井。」溫泉區住戶王熏家的溫泉水井原本只有十幾公尺深,二年前因
為建商開發,導致水溫遽降十度,他們重新開鑿水井到三十幾公尺深,但是最近發現水溫
再度下降。
「很擔心地層會下陷。」礁溪民宿業者黎娟說,看到大型建案開挖地下室,每天抽掉數千
噸溫泉水,加上民眾爭相鑿井,讓人擔心地層問題。
宜蘭大學教授江漢全曾調查,礁溪早年發生過土石流,從山谷沖刷下來很多大小土石,在
溫泉區留下七個小山丘。
明新科大教授林致遠曾在礁溪做過地質研究,證實在五峰旗附近有一處面積相當大的地層
滑動面,他說,溫泉就位於破碎斷層帶,屬於環境敏感區,萬一地盤變動,更容易成為土
石災害的潛在危險區,開發時要更謹慎。
林致遠說,地下水具有「不可逆性」,為了溫泉永續經營,必須限縮建商的開發強度,開
鑿水井也必須管制。
宜縣府水利科長李峰昌表示,民眾鑿井須提出申請,若是舊井挖深,照現有溫泉使用量作
為管制基準,鑿井深度並沒有特別規定;針對大型建商抽排溫泉水,縣府未來將收取水資
源稅。
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