通过模型试验 ,对位于西安市东郊因采沙使河道破坏严重的灞河河段进行了复现试验和研究 ,并以此为依据 ,通过优化比较为设计部门提供了合理的橡胶坝坝址和坝座高程。在此基础上 ,又对建坝后橡胶坝对上下游冲淤变化的影响进行了试验研究和分析 ,解决了工程设计中的一些关键技术问题 Through the model test, the reappearance test and research on the Bahe reach of serious damage to the riverway due to sand mining in the eastern suburbs of Xi’an was carried out. Based on this, a reasonable rubber dam site was provided to the design department through optimization and comparison And dam seat elevation. On this basis, the impact of the rubber dam on the upstream and downstream scouring and silting changes after the dam construction was studied and analyzed, and some key technical problems in the engineering design were solved