一、问题的提出我市是辽宁省商品粮基地之一,仅水田面积就有62万亩。在全市大、中、小7座灌区内修建的节制闸、泄水闸、跌水、渡槽、倒虹吸等建筑物1,000余座。这些建筑物出流消能计算都是依据国内现行规范设计的,经计算座座建筑物出流都满足淹没式水跃的要求(底流消能),且多数不需要设置消能池。既是如此,在设计时也按规范设置构造消能池,按理已足够安全了。但实际上,除了倒虹吸外,座座建筑物下游都有轻重不同的冲刷破坏,而且几乎 First, the issue put forward The city is one of the commodity grain base in Liaoning Province, paddy field area alone has 62 million mu. In the city’s large, medium and small 7 irrigation area built control gate, sluice, drop, aqueduct, inverted siphon and other buildings more than 1,000 seats. The outflow energy dissipation calculation of these buildings are all designed according to the current national standard. The outflow of the seat building is calculated to meet the requirement of submerged water jump (underflow energy dissipation), and most do not need to set the energy dissipation tank. That being the case, in the design of the canon according to the normative structure to build energy-saving pool, reasonably safe enough. However, in fact, in addition to inverted siphon, the seat downstream of buildings have different severity of erosion damage, and almost