Mid - point incremental method and initial stress method are used to reflect the nonlinear of the material ' s stress and strain . at the same time , the process of load during construction is simulated 用中点增量法结合初应力法反映筑坝材料的应力应变非线性，计算时模拟坝体施工加载过程。
Large - scale compaction tests have been carried out and compared with design compacted standards before embankment in order to ensure embankment parameter for dam construction 摘要盘石头水库面板堆石坝，在填筑前进行了大型碾压试验，复核设计压实标准，确定各区筑坝材料的填筑参数，供坝体施工采用。
The embankment has characterized as : material explored nearby , the foundation deformation fitted well , simple construction techniques , and ease to organize the rapid mechanical construction 土石坝具有筑坝材料可以就地采取，较能适应地基变形，结构较简单，施工技术较简单，便于组织机械化快速施工等特点。
While environmental groups tout the damage caused by deforestation , dams and unsustainable agriculture in the region , there was little evidence that these practices are widespread and polluting the headwaters of these river systems 在环保组织宣传由于在该地区烂砍滥伐、拦河筑坝以及不可持续性农业导致的危害的同时，却没有多少证据表明这些行为普遍存在，并污染这些水系的源头。
The damming technique is relatively perfect now , but because of the problems in construction management are more and more severe , such as construction scheme and matching machine , which manifest the high construction expenses 虽然碾压混凝土筑坝技术已达到较成熟的地步，但是由于采用不同施工组织方案和机械配套方面存在的施工管理问题越来越突出，这集中反映了碾压混凝土坝施工费用的巨大浪费。
It has accumulated much experience in the choice of earth rockfill dam ' s material , division of dam ' s body , stabilization of dam , seepage , settlement , analysis of stress and strain , treatment of foundation , criterion of reclamation and machine of construction and so on 在土石坝筑坝材料，坝体分区，坝体稳定，渗流，沉降及应力应变分析，基础处理，填筑标准，施工机具等一系列关键技术上，已经积累了丰富的经验。
Advanced experience accumulated in construction is summarized and especially dam base excavating and treating , material making , quality method for dam filling and flattening , passing flood season method and construction of concrete face are discussed in this paper 本文总结了施工中积累的先进经验，重点论述了筑坝材料制备方法、坝体填筑碾压质量保证措施、度汛方案、混凝土面板施工工艺及质量控制关键点的施工方法等。
The main measures are : damming improving flow condition riverbed excavation etc . riverbed excavation is always used in reducing velocity of a channel with bad flow condition . in singularity channel , velocity can be reduced with the increase of crossing area by excavating riverbeds 整治采取的主要措施有：筑坝壅水、改善流态、开挖河槽等等，对于流态恶劣的急流滩，常采用开挖河槽扩大过水断面面积的方法来降低航道流速。
May , 1997 , weihai jinfeng real estate company of huaneng comprehensive industrial co . shandong branch began to fill out the sea and build the dam in barren beach and wild mountain range in the east of bathing beach , and fire the first battle of building golden bay hotel 金海湾大事记1997年5月，华能综合产业山东公司下属威海金峰房地产公司在威海国际海水浴场东侧荒滩野岭之地上，开始填海筑坝，打响了建设金海湾国际饭店的第一仗。
The scale and height of rolling - concrete are spread increasingly , such as the technique studied recently that the 300 meters high gravity dam and the 200 meters high arch dam , which requires more experience in the damming technique , construction crafts and mechanization 目前，碾压混凝土坝的规模和高度正在日益扩大， 300m级的碾压混凝土重力坝和200m级的碾压混凝土拱坝的研究正方兴未艾，对碾压混凝土筑坝技术、施工工艺和机械化程度的要求也更高。
