淮南地区淮河故道的初步研究

A PRELIMINARY STUDY ON THE PALEOCHANNEL OF THE HUAIHE RIVER IN THE HUAINAN AREA

根据淮南-凤台地区八公山与舜耕山之间的风口地形，风口地形底部和50高地上遗存的冲积层，以及砾石形态特征和岩石成分分析等，确定早更新世和中更新世时期的古淮河从八公山南麓和八公山与舜耕山之间的风口地形流向今淮南北侧的淮河．并根据同期冲积层埋藏型与出露型的差别，分析了淮河改道的成因．

According to the wind gap landform between the Bagong Mountain and the Shungeng Mountain in the Huainan-Fengtai region,the allurial deposits in the bottom of the wind gap and on the top of No.50 highlands, and the analysis of the features and composition of the gravels, it is infered that during the early and middle pleistocene,the ancient Huaihe River once flowed on the south piedmont of the Bagong Mountain and ran into the wind gap, then reached the course of taday's Huaihe River in the north of Huainan.Based on the analysis of the differences between buried and exposed types of coincident alluviums, the causes of channel change is also discussed.