三峽大壩不怕原子彈轟炸 越泡越結實 你 - 股票
By Quintina
at 2020-07-23T12:36
at 2020-07-23T12:36
Table of Contents
1.原文連結: https://reurl.cc/exeXXj
※過長無法點擊者必須縮網址
2.原文內容:
發表時間:21/07/2020 - 00:05
作者:安德烈
中國長江流域洪災嚴重,專家指新一輪大洪水或襲向三峽大壩。三峽水庫是否加劇了長
江流域的洪災,三峽大壩是否存在潰壩風險的問題再一次被提了出來,為消解中國公眾
疑問,一些中國水利官員及專家出面解釋,似乎仍難平息疑問。
新華社7月18日報道說:三峽樞紐運行部門檢測記錄顯示,三峽大壩發生“位移、滲流、
變形等”,不過,新華社報道並未給出位移、滲流、變形的數據,而是強調“主要參數
都在正常範圍內”,“大壩擋水建築物各項安全指標穩定”。官媒報道的重心雖在於強
調各項參數都很“正常”,但無疑承認了三峽大壩發生了位移、滲流、變形等問題。
水越泡越結實?
『中國經濟周刊』7月16日就“三峽潰壩說”採訪中國工程院院士、水文學與水資源學家
王浩。這位專家說,三峽大壩壩體不存在任何問題,他還表示這座大壩“會在100年內越
泡水越結實”。
關於三峽大壩存在“變形”、“潰壩”的說法,他稱這座大壩是依照抵禦“萬年一遇”
的超大洪水而設計,即便遭遇超過每秒12.43萬立方米的洪峰流量衝擊,壩體仍固若金湯
。
關於“變形”,他指三峽大壩在涉及允許範圍內的“彈性變形”並不可怕。他稱三峽大
壩本身是混凝土重力壩,不但不怕長期泡水,其抗壓能力反而會在100年內水越泡越結實
,他甚至稱,已經蓄水17年的三峽大壩,目前的混凝土抗壓能力已遠遠超出設計標準,
由當初設計的25兆帕提升至目前的43兆帕。
三峽集團總工程師張曙光也稱,彈性變形並不可怕,關鍵要看是否在涉及允許範圍內,
他還說,三峽大壩有一套完備的安全監測系統,共埋設了1.2萬多個儀器監測點,一旦有
異常就會即可報警,怎麼可能會出現網絡照片上那麼誇張的變形?
不過,旅居海外的水利專家王維洛則強調三峽大壩在變形,7月11日,他在美國之音採訪
時表示,三峽大壩是重力壩,幾十個水泥塊擺在基岩上、靠自身重力保持大壩穩定,所
以肯定會發生位移的。之前他還對媒體表示,比起壩體變形,三峽大壩更為嚴重的是滲
漏問題,壩體船閘四周的滲漏問題相當不樂觀,當時由武警部隊所負責的 船閘工程是施
工最差、位移最大的所在,一旦潰堤,從大壩以下到上海、出海口將“全部完蛋”,他
呼籲長江中下游居民應早有心理準備。
原子彈轟炸都不怕?
三峽大壩在核武器攻擊下會不會潰壩,這也是一個經常提出的問題,中國水利發電工程
學會副秘書長張博庭稱,中國軍方和工程部門從1959年至1988年就已考慮到了三峽大壩
可能成為戰爭攻擊目標的問題,最後確定了“最抗炸、不會潰壩”的混凝土重力壩型。
這位副秘書長下面的說法更驚人:“退一萬步說,假如原子彈直接命中大壩,後果也只
是把大壩炸出一個大缺口,相當於幾個關不上的大閘門而已,不可能發生整個水庫瞬間
滔天傾瀉的毀滅性潰壩。”
3.心得/評論:
※必需填寫滿20字
官方都承認變形位移了,又說正常範圍內,
沒有完整的監測數據公佈,打死我都不相信不會潰壩,
時間早晚問題而已。
----
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--
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