Beach-bar is a common kind of lacustrine sedimentation distributed in the shallow water area. To date, a large amount of oil and gas resource was explored within beach-bar reservoir. However, the depositional mechanism and internal architecture of the beach-bar system are still to be discovered. In this paper, to reveal the formation of a beach-bar system, an experimental beach-bar system was produced through a flume experiment controlled by a simulation plan with three stages. To reproduce a beach-bar system along the lake shore, a bedform with a pre-existing delta was utilized. Based on the morphology data set scanned during the experiment, the sedimentary process and internal architecture of the experimental beach-bar system was discovered. According to the experiment, artificial wave is the key driver force to reform the pre-existing sediments along the lakeshore. A higher water level associated with stronger wave strength, which produced the main deposit, can accelerate the formation process of beach-bar system and create larger scale beach-bars. In contrast, the lower water level and weaker wave can only slightly modify the initial bedform. In the first stage of the experiment, the pre-existing delta was gradually abandoned; sediment of the pre-existing delta was eroded and transported to sides of the pre-existing delta. In the second stage, the pre-existing delta was totally abandoned. The water level and wave intensity kept the same as the first stage; the limited wave intensity slightly reformed the bedform and failed to produce beach-bar system. In the third stage, higher water level and associated stronger wave intensity produced an ideal experimental beach-bar system. In the experiment, the sediment was overall transported to the lake shore. The experimental beach-bar system can be divided into three parts which have different sedimentary characteristics. The largest scale bar with aggraded thick accretions deposited in the proximal part of the beach-bar system. In the middle part of the system, thin and widely distributed beach deposited. The distal part of the system was characterized by arc-shaped and parallelly arranged ridge-like bars.

滩坝是分布在浅水区的一种常见的湖相沉积物。目前，滩坝油藏已勘探了大量油气资源。然而，滩坝系统的沉积机制和内部结构仍有待发现。在本文中，为了揭示海滩-酒吧系统的形成，通过一个由三个阶段的模拟计划控制的水槽实验，制作了一个实验性海滩-酒吧系统。为了重现沿湖岸的海滩酒吧系统，使用了一个带有预先存在的三角洲的床型。根据实验过程中扫描的形态数据集，发现了实验滩坝系统的沉积过程和内部结构。根据实验，人工波浪是改造湖岸原有沉积物的关键驱动力。较高的水位与较强的波浪强度相关，产生了主要沉积物，可以加速滩坝系统的形成过程并形成更大规模的滩坝。相比之下，较低的水位和较弱的波浪只能略微改变初始床型。在实验的第一阶段，原有的delta逐渐被废弃；原有三角洲的沉积物被侵蚀并输送到原有三角洲的两侧。在第二阶段，之前存在的三角洲被完全抛弃。水位和波浪强度与第一阶段保持一致；有限的波浪强度稍微改变了床型，未能产生海滩酒吧系统。在第三阶段，更高的水位和相关的更强的波浪强度产生了理想的实验海滩酒吧系统。在实验中，沉积物被整体输送到湖岸。实验滩坝系统可分为三个具有不同沉积特征的部分。沉积在海滩-酒吧系统近端部分的最大比例尺，带有加厚的堆积物。在系统中部，沉积了薄而分布广泛的海滩。该系统的远端部分的特点是弧形和平行排列的脊状杆。沉积在海滩-酒吧系统近端部分的最大比例尺，带有加厚的堆积物。在系统中部，沉积了薄而分布广泛的海滩。该系统的远端部分的特点是弧形和平行排列的脊状杆。沉积在海滩-酒吧系统近端部分的最大比例尺，带有加厚的堆积物。在系统中部，沉积了薄而分布广泛的海滩。该系统的远端部分的特点是弧形和平行排列的脊状杆。