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一、前言丹江口水利枢纽第一期工程于1958年9月1日开工。为了加快基础开挖速度并为围堰准备石料起见,提早进行水上部份7、8两跨的岩石开挖,至11月底小围堰合龙抽水,即开始了大坝9—13垮的基础开挖;12月底大围堰合龙抽水,即又开始了大坝14—18垮及上下游砼纵向围堰的基础开挖爆破工作。基坑开挖中,岩石开挖是控制工期的主要工程,客观条件虽然是边施工边准备,机械器材十分缺乏,存在着很多困难。但是在中共湖北省委“政治挂帅、加强领导、依靠群众、自力更生、以土为
I. Preface The first phase of Danjiangkou Hydropower Project started on September 1, 1958. In order to speed up the foundation excavation speed and prepare the cofferdam for the cofferdams, early excavation of the rock sections with 7 and 8 spans in the water section was carried out. Closure pumping of the small cofferdam at the end of November started the foundation opening of the 9-13 collapse of the dam Digging; large cofferdam closure pumping by the end of December, that is, began the collapse of the dam 14-18 and longitudinal concrete cofferdam foundation excavation blasting work. In the excavation of foundation pit, rock excavation is the main project to control the construction period. Although the objective conditions are to prepare for the construction side, the mechanical equipment is very scarce and there are many difficulties. However, in the CPC Hubei Provincial Committee "political command, strengthen leadership, rely on the masses, self-reliance, to soil