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　�。ㄒ唬┪驳V壩的最小安全超高和尾礦庫的最小干灘長度達(dá)不到設(shè)計規(guī)范的要求，不能確保壩體的安全；（二）排水系統(tǒng)嚴(yán)重堵塞或坍塌，不能排水或排水能力急劇降低，排水井顯著傾斜，有倒塌的跡象；（三）壩體出現(xiàn)深層滑動跡象；（四）其他危及尾礦庫的情況。

　　第七十九條尾礦庫有下列工況之一的為險庫：

　�。ㄒ唬┪驳V壩的最小安全超高和尾礦庫的最小干灘長度達(dá)不到設(shè)計規(guī)范的要求，但平時對壩體的安全影響不大；（二）排水系統(tǒng)部分堵塞或坍塌，排水能力有所降低，達(dá)不到設(shè)計要求；（三）壩體出現(xiàn)淺層滑動跡象；（四）壩體出現(xiàn)貫穿性的橫向裂縫，且出現(xiàn)較大的管涌，水質(zhì)渾濁挾帶泥沙或壩體滲流在堆積壩坡有較大范圍逸出，且出現(xiàn)流土變形；（五）其他影響尾礦庫安全運行的情況。

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