滑坡涌浪影响下船舶安全锚泊范围试验研究  

Experimental studies of safety scope for ships' anchorage under landslide generated waves

作　　者：许海勇[1,2] 王平义[1,2] 喻涛[1,2] 

机构地区：[1]重庆交通大学国家内河航道整治工程技术研究中心,重庆400074 [2]重庆交通大学水利水运工程教育部重点实验室,重庆400074

出　　处：《人民长江》2015年第15期78-81,共4页Yangtze River

基　　金：国家自然科学基金项目(51479015);西部交通建设科技项目(20113288141160);重庆市科技公关项目(CSTS2009AC6045)

摘　　要：由于水库蓄水水位的变化,库区时常发生山体滑坡,滑坡涌浪作用于锚泊船舶时可能会使船舶的锚链拉断,造成较大灾害。为研究滑坡涌浪传播特性和降低涌浪对船舶造成的损害,通过岩体滑坡涌浪概化模型试验,并基于多元线性回归分析方法,得到了首浪高度、涌浪高度衰减系数和最大锚链拉力的经验公式,进而推导出静水中船舶安全锚泊限制范围的计算公式。上述公式的确定,可为制定滑坡地点附近锚泊船舶的安全避险措施和预测滑坡涌浪产生的破坏范围提供依据。Landslides occur frequently in reservoir area because of the fluctuation of impounded level. The ship anchor chains may be broken when the landslide generated waves act on the anchored ships, which may lead to greater disasters. To study the propagation characteristics of the landslide generated waves and reduce its damage on the ships, a physical model to simulate the waves generated by rock landslide is designed. The empirical formulas of the primary wave height, the attenuation coefficient of wave height and the maximum tension of anchor chains are obtained by using the multiple linear regression method;and then the calculation formula of the safe anchorage scope of the ships under hydrostatic condition is deduced. The above formulas provide an important basis for setting out the risk-controlling measures for the ships near landslide sites and predicting the damage range of landslide generated waves.

关 键 词：滑坡涌浪 首浪高度 衰减系数 锚链拉力 锚泊限制范围 

分 类 号：P642[天文地球—工程地质学]