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新疆维吾尔自治区地处祖国西北边陲,地域辽阔,洪水类型主要属暴雨型洪水,而且具有明显的季节性。洪水的发生主要在3月、4月融雪季和7月、8月雨季,径流年内分配非常集中,年径流总量的很大部分都集中在几次大洪水上。该地区的水文资料一般很少,观测洪水的机会不多,河流受河床、河岸局部地质构造的影响,以及地形、地貌、自然条件的差异,形成了众多不同的河床类型和演变特点。特别是典型的冲积扇型河道,桥涵布设的原则有其特殊性。根据笔者在新疆地区的公路设计经验,总结了一些桥涵布设方法供大家参考借鉴。
Xinjiang Uygur Autonomous Region is located in the northwest border of the motherland, a vast territory, the flood type is mainly storm-type flood, and has obvious seasonal. Floods occurred mainly in March and April in the snowmelt season and in July and August in the rainy season. Distribution of runoff during the year was very concentrated. A large part of the annual runoff was concentrated in several major floods. There are few hydrological data in this area, few opportunities to observe the flood, the river is affected by the local geological structure of riverbed and riparian, and the difference of topography, physiognomy and natural conditions, forming many different riverbed types and evolution characteristics. In particular, the alluvial fan typical channel, the principle of laying bridges and bridges has its own particularity. According to the author in the Xinjiang region highway design experience, summed up some of the bridges and culverts laid for your reference for reference.