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二滩水电站自发布开工令后,业主和工程师单位逐渐完善了组织机构和人员配备,对工程施工实行全面管理和监理。两个承包商的主要施工设备均已陆续运抵工地,外籍技术人员已到达施工现场约300人。在承包商开始进场施工以前,二滩水电开发公司做了大量前期准备工程,包括两座钢筋砼永久大桥和一座钢索临时吊桥、8条公路、两个变电站、三条供电线路、将近70万m~3的明挖和20万m~3洞挖、约6万m~2的营地建设、微波和卫星通讯、桐子林转运站及水泥厂、油库扩建工程等,为承包商进场施工创造了很好的条件。Ⅰ标承包商——二滩联营体目前正在施工的永久性工程只是8号公路,此外正在左岸施工一些通往拌合楼、骨料场的临时公路。对于两岸坝肩的开挖,准备采用斜井式出渣分层向下开挖方法,以减少坝肩明挖对其它工程的干扰。对于截流,准备采用平堵法,在上游围堰处的河床两岸正在施工平堵作业栈桥的桥墩。
Ertan hydropower station since the release of the start order, the owners and engineers gradually improve the organizational structure and staffing, the construction of a comprehensive management and supervision. The main construction equipment of the two contractors have been delivered to the site one after another. Foreign technicians have arrived at the construction site for about 300 people. Before the contractor started to enter the construction site, Ertan Hydropower Development Company did a great deal of preliminary preparation work, including two reinforced concrete permanent bridges and one steel cable temporary suspension bridge, eight highways, two substations and three power supply lines with nearly 700,000 M ~ 3 digging and 200,000 m ~ 3 hole digging, about 60,000 m ~ 2 camp construction, microwave and satellite communications, Tongzilin transfer station and cement plant, oil depot expansion project, for the construction of the contractor to enter the site Very good condition. Ⅰ contractor - Ertan Joint Venture Currently under construction is a permanent project on the 8th road, in addition to the construction of some of the left bank to the mixing building, aggregate road temporary highway. For the excavation of the dam abutments of the two banks, it is planned to adopt the method of downhole excavation stratified downward to excavate to reduce the interference of dam excavation on other projects. For the closure of the river, we are going to adopt a horizontal blocking method, and we are constructing the piers of the trestle work trestle on both banks of the riverbed at the upstream cofferdam.