废弃河道沉积 abandoned channel deposit
The remaining oil is normally enriched in the outer most abandoned channel and the lower part of point bar,especially the point bar badly connected with water-flooded sand bodies.
最外线的废弃河道和点坝下游处剩余油富集；与注水砂体连通不好的点坝存在较多的剩余油；低弯曲河道与顺在河道水淹沿主流线快速推进，河道边部形成断续分布的剩余油富集区。
参考来源 - 萨尔图油田河流相储集层高含水后期剩余油分布规律研究·2,447,543篇论文数据，部分数据来源于NoteExpress
建立了侧积体沉积迭式：平面以废弃河道拐点为轨迹交点，向废弃河道方向曲率逐渐减小，终止于废弃河道。
The pattern of sand deposition is established. The abandoned channel track cross on inflection point. Curvature of the lateral acceleration gradually decreases and ends at the abandoned channel.
后来，分流可再次改变河道，把它的负荷沉积在原来废弃的较老的河口附近。
Subsequently, a distributary may again change course to debouch its load near the mouth of its older, abandoned channel.
采选产生的废液及固体废弃物堆积的淋滤酸水，携带大量重金属离子排入下游河道，严重危害矿区及其酸水流域的生态环境。
The acid mine water and heavy metals ions drained directly into the Hengshihe river, which contaminated the ecological environment along the river severely.
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