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在小湾水电站拱坝下游冲刷平衡深度的研究中，清华大学研究了一套动态采集系统，它可用计算机自动记录不同时刻的深度，并可绘制冲刷深度的发展过程．该采集系统主要是在小湾工程断面模型试验中用于量测坝身表孔和中孔泄洪时，下游冲坑的发展过程．试验工况分别取表孔泄洪、中孔泄洪和表中孔联合泄洪三种工况．从各种工况下冲坑深度发展过程实验结果与采用公式计算的理论预报曲线比较看，两者吻合较好．该系统构造简单，操作方便，成果可靠．
Tsinghua University studied a set of dynamic acquisition system that can automatically record the depth at different times with the computer and draw the development process of erosion depth in the research of balance erosion depth of downstream of arch dam of Xiaowan Hydropower Station. The acquisition system is mainly used in Xiaowan project profile model test for measuring the surface of the dashboard and the hole flood, the downstream pit development process. Test conditions were taken to discharge spillway, spillway in the hole and the table in the joint hole flood discharge three conditions. According to the experimental results of deep pit development under various working conditions and the theoretical prediction curve calculated by the formula, the two are in good agreement. The system has simple structure, convenient operation and reliable results.