查询词典 groyne

This paper presents the mechanism of erosion scour around groynes of levee projects and a probability method of the reliability analysis for groyne erosion under random factors.

分析了防护丁坝冲刷的机理，用概率分析方法研究了在随机因素影响下防护丁坝抗冲刷的可靠性问题。应用Rosen-blatt变换确定防护丁坝抗冲刷破坏的功能函数在随机因素影响下的可靠性指标。

Through the study above, a refined description and modeling to flow field and water surface near the groyne in river is conducted with 2-D and 3-D mathematical models. The results by simulation are consistent well with experiment data.

通过上述研究，作者采用二维和三维数学模型对水槽试验和天然河道中丁坝附近流场和水面形态进行了精细地描述和模拟，计算结果和实测结果吻合良好。

This paper studies on the law of the kinetic energy correction factor near a groyne by a flume experiment basing on one dimensional energy equation of steady flow.

本文从一维恒定流能量方程式出发，通过水槽实验，研究丁坝附近动能修正系数的变化规律。

In the channel regulating work, regulating structures such as groyne, longitudinal dam are used to change water depth, water velocity and water surface slope of the channel.

航道整治工程中，常采用修建整治建筑物如丁坝、顺坝等来改善河流的水深、流速、水面比降，使河流达到通航要求。

The equivalent gradient of the back-slope of the eroded pit near the head of the groyne is less than a critical value of JD,which is related with the rest angle of the scoured out silt under water.

分别考虑了水道流速、土颗粒等效直径、冲刷坑半径、冲刷坑后坡度临界值和水流方向角为相关或独立的非高斯随机参数时的可靠性问题。

Main creative points of the thesis are as following:1. It is the first time to apply 2-D and 3-D turbulent model of the air-water two phases flow to the study on hydraulic properties of groyne. It makes description of the turbulent flow field to be possible precisely. This offers a more accurate method to determine the water surface in channel improvement.2. Based on the results of experiment and simulation for 3-D turbulent model of air-water two phases flow, a new formula to compute the height of damming is built.3. Based on the 2-D mode and the formula to compute the height of damming, the subdivision method of 2-D computation for water surface at upstream and downstream.

本文的创新工作主要是：首次将三维水气两相流紊流数学模型应用于丁坝水动力学特性研究，使丁坝附近流场和紊动场的精细描述成为可能，为航道整治中水面线确定提供了一个更为准确的方法；(2)基于水槽实验和三维水气两相流紊流数学模型数值模拟结果，建立了新的丁坝前奎水高度计算公式；(3)基于上述奎水高度计算公式和本文二维水面计算数学模型，首次提出了丁坝上下游二维水面分段计算方法。

Having been thus harass'd in my Thoughts, my old Pilot, to whom I communicated every thing, press'd me earnestly not to go by Sea, but either to go by Land to the Groyne, and cross over the Bay of Biscay to Rochell, from whence it was but an easy and safe Journey by Land to Paris, and so to Calais and Dover; or to go up to Madrid, and so all the Way by Land thro' France.

我为这事心里烦透了，就去与老船长商量。他坚决反对我走海路，而劝我最好走陆路到拉科鲁尼亚，渡过比斯开湾到罗谢尔，再从罗谢尔走陆路到巴黎，既安全又舒适，然后再从巴黎到加来和多佛尔；或先到马德里，然后由陆路穿过法国。

Concerning the planning, it was arranged to 120° groyne and the direction of flow diversion, in the construction, water jetting pile sinking was used in the experiment fixed concrete pile, and lead wire cage rubble was filled.

在规划布置时，宜布置成下挑式，顺水导流；施工时采用射水沉桩的方式固定混凝土桩，人工在混凝土桩间填置铅丝笼块石。

Comparing the computation results of these four design schemes we get variation of the kinetic energy correction factor near groynes in Panjiatai shoal when water depth is less than the groyne height. The variation characteristics of the kinetic energy correction factor in Panjiatai shoal is different from the experiment results because the effect of groynes in the Panjiatai shoal is simulated by three parameters together.

比较四个方案的计算结果，可以得到潘家台滩绕流流态下丁坝附近动能修正系数的变化情况，与实验进行对比，分析两者产生差异的原因是潘家台滩工程中丁坝对水流的影响由三个参数共同来模拟。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。