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我国西北内陆盆地祁连山、天山、阿尔金山南北麓及昆仑山北麓的山前冲积洪积倾斜平原地带,以及宁夏境内贺兰山东麓、桌子山东麓的山前倾斜平原,大都是铁路网必经之地,广泛分布着大型冲积锥宽河和中小型连续冲积锥漫流,一般习称山前宽河漫流。 在山前宽河漫流地区修建铁路桥梁,是新中国成立以后遇到的特殊桥渡设计和水文问
The alluvial slope of the alluvial plains of the Qilian Mountains, Tianshan Mountains, the Altun Mountains and the northern foot of the Kunlun Mountains in the inland basins of Northwest China and the mountainous front slopes in the eastern foot of Helan Mountain and the Table Mountain in Ningxia are mostly the railway networks Pass through the land, widely distributed with a large alluvial cone wide river and small continuous alluvial cone flow, generally known as the river before the wide river flow. The construction of railway bridges in the floodplain area in front of the mountain is a special bridge crossing design and hydrological problem encountered after the founding of new China