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一、前言 长江自宜宾至宜昌河段俗称川江,长约104.5公里。这段河流流经丘陵和高山峡谷,属于山区河流。其平面形态的形成,主要受河谷地形、地质及水流与河床长期相互作用所决定。弯曲性河段是川江常见的一种河型,可出现于窄深的峡谷河段,又可出现于
I. Preface The Yangtze River, from Yibin to Yichang, is commonly called Chuanjiang, about 104.5 km long. This section of the river flows through hills and alpine valleys and belongs to mountain rivers. The formation of its planar form, mainly by the valley topography, geology and water flow and long-term riverbed interaction decision. Bending river is a common type of river in Chuanjiang, which can occur in narrow deep gorges, but also in