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汶川大地震后,四川灯煌水库大坝坝顶开裂,险情严重,对下游造成严重的威胁。根据水利部下达的灯煌水库抢险任务,确定采用抽水法降低库水位,并采用爆破法与液压碎石法相结合的技术方案开挖岩石溢洪道,经过14 d的紧张施工,至2008年6月3日,灯煌水库库水位降低了2.5 m,溢洪道高程降低了2.01 m,水库险情得以解除。
After the Wenchuan earthquake, the crest of the dam of the Denghuang Reservoir in Sichuan has been cracked with serious danger and poses a serious threat to the downstream. According to the rescue mission of Denghuang Reservoir issued by the Ministry of Water Resources, it is determined that the water level of the reservoir should be reduced by the pumping method, and the rock spillway should be excavated by a combination of blasting method and hydraulic gravel method. After 14 days of intense construction, Day, the water level of Denghuang Reservoir has been reduced by 2.5 m, the elevation of spillway has been reduced by 2.01 m, and the reservoir danger has been relieved.