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一、前言在主要河流上修建大型水利枢纽,由于水头高,流速大,还夹带着砂石过坝和闸,对泄水建筑物的冲刷磨损就直接关系着大坝的安全和使用寿命。我院从七十年代开始对这一问题进行了试验研究,并于1979年建成了丹江口抗冲耐磨现场试验基地,利用丹江口水库的水头造成流速并加砂对混凝土试件进行现场模拟性的试验。在室内也建立了气流夹砂喷射法(即喷砂枪法)和冲磨机法,对这三种方法进行了平行试验,有关试验方法可以参考“混凝土抗冲磨性能试验方法的研究”一文[1]。
I. INTRODUCTION The construction of large-scale water control hubs on major rivers has a direct impact on the safety and service life of the dam due to the high head and high flow rate and the sand-dam crossing and brakes. Our hospital from the seventies began to carry out experimental research on this issue and in 1979 built the Danjiangkou impact test site wear and tear, the use of Danjiangkou reservoir head caused by the flow rate and sand on the concrete specimens on-site simulation test. Air-flow sandblasting spraying method (ie, sandblasting gun method) and impact mill method were also established indoors. The three methods were tested in parallel. For the test method, reference is made to the article “Research on Test Method of Anti-scuffing Performance of Concrete” 1].