溜砂坡滚石冲击运动特征研究

Study on the Characteristics of Rockfall Impact Disaster on the Sand-sliding Slope

溜砂滚石严重威胁着铁路、公路的交通安全。论文分析了溜砂滚石的运动形式及运动方程,并针对滚石碰撞和不碰撞两种情况分别对运动方程进行了推导和案例计算。研究结果表明:溜砂坡滚石在同一挡墙高度情况下,随着坡面长度的增加,滚石水平抛射距离在增大,而水平抛射距离的增量却在减小;溜砂坡滚石在同一坡面长度情况下,随着挡墙高度的增加,滚石水平抛射距离在增大,而水平抛射距离的增量也在减小;考虑滚石碰撞情况下水平抛射距离及其增量都比同条件下不考虑滚石碰撞情况下要大得多的重要结论。

rockfall threatened the transportation safety of railway and road. This paper analyzed the formation andmovement mode of roekfalls, researched and calculated on roekfalls collision and non-collision. The research result showedthat as slope degree increased, the horizontal ejection distance of the rolling stone increases while the horizontal projectiledistance decreases under the same barricade height; if under the same slope length and barricade height increasing, thehorizontal projection distance of the rolling stone increases while the increment of horizontal projectile distance was alsodecreasing. In the case of rolling stone collisions, the horizontal projectile distance and its increment were much larger underthe same conditions without considering rolling stone collisions.