| 1. | Fractal research of joints roughness coefficient of rock
节理粗糙度与分维 |
| 2. | Describe rock joint roughness coefficient with fractal dimension
岩石节理粗糙系数的分形描述 |
| 3. | Fractal description of two - phase medium cementation plane roughness coefficient between rock and concrete
混凝土两相介质胶结面粗糙系数的分形描述 |
| 4. | A simple model based on force equilibrium is proposed to evaluate the vegetative roughness coefficient
根据力的平衡建立了一个一维简单模型分析植被对水流的阻力。 |
| 5. | With combining optimization method , an optimal model of determining synthetic surface roughness coefficient in film hole irrigation was developed
实例计算与方法验证表明，该方法能够简单而有效地确定膜孔灌溉田面综合糙率系数。 |
| 6. | As for moving tc , its symmetry somely rusume after landfalling . the different distributing between expb2 and expb3 is much smaller than the other exps of the same group , so it is shown that if the roughness coefficient come to a certain number , the effect of roughness maybe not take the leading key in tc decreasing process any more
对于移动热带气旋登陆而言，登陆后对称性有所恢复，当下垫面粗糙度达到一定值时，由于粗糙度引起的差异明显减小，粗糙度在其减弱的过程中可能已不占主导作用。 |
| 7. | This paper discuss the effect of roughness coefficient on the tropical cyclone landfalling process using a idealized tc model developed from psu / ncar mm5 in the condition of quiescence and f - plane atmosphere . in order to understand the different influences of land and sea surfaces in the tc landfalling process , two kind of experiments had been designed : one for settled tc , the other for movable tc , and each kind consists four tests . the result indicates that the distribution of wind , precipitation , warm core and intensity of tropical cyclone has been changed obviously due to the effect of difference between the land and sea
本文利用bogus技术在psu / ncarmm5中加入了理想热带气旋初始涡旋，在f -平面和无环境流场的理想情况下，设计了两组静态和动态试验，通过控制试验和不同粗糙度的登陆试验，分别从空间和时间上探讨了理想热带气旋的登陆规律和分布特征，特别研究了边界层中热带气旋中心区域风场的垂直细致结构，并初步分析了其物理机制。 |
| 8. | The main contents are as follows : ( l ) through theoretic analysis and flume experiments , the characteristic of water resistance through frames is researched , and transforms relation between resistance coefficients and manning ' s roughness coefficients is established , and then experiential formula of manning ' s roughness coefficients is fitted
主要研究内容如下： ( 1 )通过理论分析和水槽试验，研究了穿越四面体框架群水流阻力系数的变化规律，建立了阻力系数与框架群等效曼宁糙率系数的转换关系，拟合出了糙率的经验计算公式。 |
| 9. | In this paper a date from some real projects are used to analyse the facors that will affect the energy dissipation and erosion prevention . such as flood discharge across the cofferdam , crest elevation , downriver cofferdam , roughness coefficient and the gradient of the surface of dam , and so on . in this paper , the program based on hydraulics is checkout by the tankeng waterpower project in zhejiang . the results prove that this program can be used to design any project where there is no obvious side shrinking phenomena
本文结合工程实际对影响围堰和坝体消能防冲的各种因素，包括过堰流量、坝面高程、下游围堰堰顶高程、坝面糙率、坝面坡度等进行了分析，并借助水力学知识和计算机语言编写了围堰和坝体的优化计算程序，并利用浙江滩坑水电站工程对所提出优化计算程序进行了验证，证明了该程序在没有明显的侧收缩的影响下，计算结果与实际情况较为吻合。 |
| 10. | Taking suspension bridge anchor of runyang highway bridge as project background in this paper , considering undulating angle of rock mass structural plane , angle of mean square root slope method is established by exerting fractal geometry theory . fractal dimension of profile of rock mass structural plane is calculated by above method . and roughness degree is described quantitatively , furthermore correlativity between fractal dimension and roughness coefficient ( jrc ) is analyzed
本文以润扬大桥悬索桥锚碇摩阻力研究为工程背景，运用分形几何理论，从岩体结构面起伏角的角度出发，建立了均方根坡度角法测算岩体结构面剖面轮廓线的分维数，定量描述其粗糙程度，并分析了分维数与粗糙度系数jrc之间的相关关系。 |
