大渡河深溪沟水电站截流具有截流流量大、河道水面比降大、河床覆盖层厚等特点。介绍了有关截流方案、研究的模型试验研究成果，即截流方式、戗堤轴线布置、单戗与双戗截流对比及降低截流难度的措施等。并结合截流施工现场观测资料进行了对比分析，模型试验成果与原型观测数据有很好的相似性。

The closure of Shenxigou Water Power Station Project was characterized by its large closure discharge, big water surface slope, thick and complex riverbed overburden etc. The paper introduces the model test results on the river closure, compares the results between the model test and the prototype observation, and verifies their good similarity.