Mechanical model with transverse downslide and impact factors studying of large mining height support 大采高支架横向下滑力学模型及影响因素研究
2.
The algorithm improved to calculate the ln ( / tan # ) index is presented , in which the area of the current cell is included in the calculated total cumulative contributing area of downslide grid cell 提出一种简单的地形指数in ( a / tanp )计算方法，该方法分别计算dem网格单元的a和tanp ，对坡度为。
3.
In the past , the general level of english in singapore was obviously superior to all in asia , however in the recent years the situation has shown a downslide degradation influenced by the regionalisation tendency 新加坡的英文水平在亚洲是有目共睹的，但近年来地方化的影响，其水平有逐渐下降的迹象。
4.
The determination of potential downslide surface is one of the most important content , so a method is brought forward . based on the result of 3d nonlinear finite element analysis , a method to determinate the potential downslide surface and safety factor for analyzing sliding force has been put forward 边坡可能下滑面的确定一直是边坡稳定分析的一个重要内容，本文提出了根据三维非线性有限元稳定分析结果确定边坡可能滑裂面及指定安全系数的下滑力的分析方法，为边坡加固提供参考。
5.
Topmodel is based on the calculation of ln ( / tan # ) index and its distribution . in terms of a dem , a is the cumulative upslope area draining through per contour length to a pixel , which reflects the tendency of water to accumulate at any point in the catchment , tan # is the local slope angle of the cell , which reflects the tendency for gravitational forces to move that water downslide Topmodel是以计算ln ( tan )指数及其分布为基础的。对于栅格dem ，为上坡区域通过单位等高线长汇集到单元网格内的面积，反映径流在流域中任一点的累积趋势， tan为单元网格的坡度，反映重力使径流顺坡移动的趋势。
6.
The calculation method of ln ( / tan # ) index widely used is the multiple flow direction algorithm developed by quinn et al . it can been seen that , in the algorithm , the contour length normal to the direction of flow flowing out the current cell is used to determine both a and tan # , and that the calculated total cumulative contributing area of downslide grid cell does not include the area of the current cell 目前普遍使用的计算该地形指数的方法为多流向法。方法中计算和tan用的均是与流出单元网格流向垂直的等高线长。另外计算下坡单元网格累积汇流面积时没有考虑欲计算ln ( tan )值的单元网格的面积，这些是不合理的。
7.
On the basis of these conclusions , the stability of natural 2 # landslide body of hongjiadu hydraulic power plant is analyzed with this finite element iteration method and the uniform value off on the sliding surface of the landslide body is inversed . meanwhile , the stability of scaled 2 # landslide body of hongjiadu hydraulic power plant is analyzed and downslide force of scaled 2 # landslide body and normal stress and shear stress on the sliding surface are obtained . in addition , the results provide a reference for reinforcing structure ' s layout 在此基础上，文中用该方法对天然状态的洪家渡水电站2 #塌滑体进行了稳定分析，反演了塌滑体滑动面上均化的f值，对部分削坡后的洪家渡水电站2 #塌滑体进行了稳定分析，获得了部分削坡后塌滑体的下滑力和滑动面上的正、剪应力分布，为加固结构布置提供了依据。
