戗堤

双戗堤截流时下戗堤的作用分析

On Function of Downstream Closure Dike under Vertical Closure with Two Dikes

航道整治工程常采用丁坝、锁坝等建筑物稳定河势。截流戗堤的渗漏分析及其计算

Spur-dike and closure dam are widely used in regulation works . Analysis and computation of seepage of berm - dam for river closure

小浪底水利枢纽工程于1997年10月28日胜利完成截流，从龙口进占到戗堤合龙历时40h。

The closure with of Xiaolangdi hydraulic key project was completed successfully on October 28 , 1997 with processing duration of 40 hours .

短间距双戗堤截流试验研究

Research on River Closure with Two Banks for Short Spacing TESTING

明渠截流折线形戗堤轴线的选择与研究

Study and Selection of Closure Dike Axis in Diversion Channel

单戗堤立堵截流模型试验与水力计算综合软件开发研究

Model Test and Hydraulic Calculation Synthetic System for End-dump Closure with Single Embankment

立堵截流戗堤堆石分叉特性研究

Research on Bifurcation Property of Dike Rockfill of River Closure by End Dumping

施工导流初期戗堤挡水标准风险分析

The risk analysis of closure dike retaining during the initial stage of construction diversion

双戗堤截流条件下戗堤间水位变化分析及模型试验研究

Research and Analysis on Water Level Variational Regularity during River Closure End-tipped with Double Embankments and Its Physical Model Test

从突变理论及自组织临界性理论，对三峡大江截流戗堤坍塌机理进行研究。

This paper researches the reasons of TGP 's banquette slumping during river closure by the Catastrophe theory and Self organized criticality .

锦屏二级水电站高水力学指标窄戗堤截流方案关键技术研究与应用

Study and application of key techniques for scheme of river closing by narrow dike with high hydraulic indexes for Jinping Hydropower Station ⅱ

单戗堤立堵截流水力分析及施工技术探讨沿海地区地下通道墙体防水与堵漏施工技术

Hydraulic Analysis and Construction Technology of the End-dump Closure for a single Embankment Construction Technology of Waterproof and Plugging of Underground Tunnel Wall in Coastal Area

采用正交曲线网格生成技术建立一种明渠导流双戗堤立堵进占截流的数学模型。

The technique of orthogonal curve-linear grid generation is used to establish the mathematical model for the open diversion channel with two embankments in river blocking .

在三峡工程明渠截流进程中，截流戗堤左右头平面位置是一个动态轨迹。

The planar position of both sides of the dam front edges are always looked as a dynamic track during the course of opening diversion channel closure .

其次以渗流的控制方程为基础，从非线性的渗透规律出发，利用有限单元法建立了截流戗堤的渗流计算模型，并利用实验资料对其进行了验证

Secondly , on the basis of embankment_seepage control equations and nonlinear seepage rule , the embankment seepage model is established by using finite element method and verified by the experiment data

根据施工总布置，采用从右岸向左岸单戗堤立堵截流方式获得成功。

According to the general layout of the construction the river closure was successfully implemented by end dumping advancing from the right bank to the left bank along a single dike .

自航船模试验成果表明：最终付诸实施的大江截流施工布置以及戗堤进占程序和方式可以满足通航设计要求。

The results from the self propelled ship model show that the final construction arrangement of river closure and the dike advancing sequences and ways could meet the requirements of navigation design .

通过物理模型试验分析截流过程中戗堤间水位变化规律，分析双戗堤截流机理，验证双戗堤立堵截流水力控制条件及其双戗堤优越性判断方法的正确性。

Variational regularity of water level between double embankments is analyzed through physical model test , which proves that the formula that controls river closure using double embankments and the method judging superiority of two embankments is reasonable .

其次，将水头损失的概念应用于截流水力计算中，求取了戗堤进占过程中戗堤下游处的流量水位变化曲线，并最终求得了龙口水力参数的计算机解。

Next , apply the concept of head loss to hydraulic calculation of closure and obtain the curve of flow level variations in the lower reaches of embankment during the course of closure and acquire the resolution of hydraulic parameters of closure gap .

依据土力学、水力学基本原理，探讨深水中填筑高堤边坡失稳机理，提出确保三峡二期截流戗堤边坡稳定的设计原则和方法。

This paper goes into unstability mechanism of filling high embankment slopes in deep water and puts forward design principles and methods to ensure slope instability of the closure embankment during 2nd TGP closure based on basic principles in soil mechanism and hydraulics .

在综合考虑截流过程的水文及水力不确定性因素的基础上，建立了截流风险数学分析模型，该模型包括天然来流量和分流建筑物泄流能力、龙口泄流流量、戗堤渗流流量的模拟。

Considering hydrologic and hydraulic uncertain factors during river closure , a mathematical model of risk analysis about river closure is built up . It includes simulation models of natural inflow , diversion construction discharge , closure gap discharge and dyke seepage flow .

在三峡工程大江截流进程中，随着深水围堰戗堤进占，裹头水位观测的平面位置是一个平行于围堰轴线的动态轨迹。

In the process of the main river closure for TGP , as the pilot dyke of the deep water cofferdam proceeds , the moving track of the water level observation positions at the front of dyke head is parallel to the cofferdam axis .

截流流量为11月下旬的20年一遇最大日平均流量14000m3／s，截流时间选在1997年11月中旬，采用上游单戗堤立堵截流方案。

The closure now discharge is 14 000 m3 / s , a 20-year return flood . The river closure is planned to be carried out on middle ten days of November , 1997 . The upstream single dike end dumping closure scheme is adopted .

由于戗堤部位平抛石渣料、围堰防渗墙区平抛砂砾石料数量巨大，需在1997年汛前抛投一部分，因此存在安全渡汛问题。

Because large quantities of ballast materials want to be dumped horizontally at the dike position , and sandy gravel materials at cofferdam impervious wall zone , parts of which must be pre dumped before flood season of 1997 , a problem of flood protection of them arose .