天山公路路基水毁凹岸挡墙冲刷深度计算水工模型公式的建立

根据天山公路沿线冲刷水毁的特点,依据典型河流段进行室内物理模拟试验,观测不同流量、不同弯道半径下河流的流速形态、水深大小、河道变化情况及水流对河岸和防护构造物的冲刷情况,并经过公式对比计算、回归分析,提出沿河凹岸护墙的局部最大冲刷深度计算公式。在此基础上,通过对近年来新疆多条山区公路上修筑的挡墙进行实地调查,对公式进行了验证。从对比情况看,该计算方法基本合理。

On the Establishment of the Water Engineering Model for Calculating the Washing Depth of the Retaining Wall in the Water-Destroyed Section of the Tianshan Highway Roadbed

According to the washing characteristics of the water-destroyed sections of the Tianshan highway and the typical river sections,an indoor physical simulation test is made to observe the washing effects of different flowing situations of the river with different flowing amounts,different bending radii,and different depths,and the change in the river course and water flow on the river bank and the retaining structures,upon the basis of which comparative calculations are done and regression analyses are made to obtain the calculation formulae of the maximum washing depth for the retaining walls along the concave bank of the river.On the basis of the research,an on-the-spot investigation is also made of the retaining walls along quite a few mountainous highways in Xinjiang to testify the calculation formulae.It is found that the calculation method is fundamentally reasonable.