低堰广泛应用于平原闸坝枢纽，其泄流能力直接决定了低水头枢纽工程的建筑物布置形式和工程效益的大小 , 而实际工程中，影响低堰泄流能力的因素很多。通过对多种数据的整理、分析，从各种不同堰型、上下游堰高、上下游堰面坡度等方面，对低堰体型与泄流能力的关系进行了研究，并结合工程实例提出了实际工程运用过程中，不同条件下低堰选型和设计应注意的有关问题。

 Low weir is widely applied to the sluices and low dams in plains. Its discharge capacity directly determines the layout of discharge buildings of low head water control project and the engineering benefit. However, in practical projects, the discharge capacity of low weir is influenced by many factors. Based on the processing and analysis of various data, and in consideration of different weir shapes, weir heights and weir surface slopes at upstream and downstream, etc., this article analyzed and studied the relationship between discharge capacity and the shape of low weir, and by taking project cases, it put forward relevant problems in engineering application which should be noticed about the design and type selection of low weir in different conditions.