以地下水动力学为基本原理，建立了以渗透破坏的临界水力坡度为条件的预防溃砂发生的临界条件和预计公式。
On the basis of groundwater dynamics, with the condition of critical hydraulic of the seepage failure, deducted critical condition and the estimating formula of preventing inrush of sand.
最后对不同坡度和不同跨度的架空斜坡道结构进行了动力时程分析，明确了此结构在移动荷载作用下的薄弱环节和传力途径。
Finally, it makes the dynamic time-history analysis of different gradient overhead sloping ramp, makes clear the weak link and the force transmission route of this structure under moving load action.
通过不同坡度、不同流量的组合放水冲刷试验，对坡面细沟侵蚀发生过程中的坡面流水动力学特性进行了研究。
The hydrodynamic characters of runoff in the process of rill erosion were studied by using runoff scouring experiment under the different slope gradients and the different flow discharges.
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