Experimental study on prediction model for maximum rebound ratio  

作　　者：雷卫东 滕军 A.HEFNY 赵坚 关炯 

机构地区：[1]Department of Urban and Civil Engineering,Shenzhen Graduate School,Harbin Institute of Technology [2]School of Civil and Environmental Engineering,Nanyang Technological University [3]Ecole Polytechnique Federale de Lausanne (EPFL),Rock Mechanics Laboratory,Lausanne CH-1015,Switzerland [4]College of Architecture and Civil Engineering,China University of Mining and Technology,Xuzhou 221008,China [5]Kvaerner E&C Singapore Private limited,Aker K vaerner Asia Pacific,Singapore 118254,Singapore

出　　处：《Journal of Central South University of Technology》2007年第1期115-119,共5页中南工业大学学报（英文版）

基　　金：Project(50278057) supported by the National Natural Science Foundation of China;project(2002CB412703) supported by the Major State Basic Research Development Program of China

摘　　要：The proposed prediction model for estimating the maximum rebound ratio was applied to a field explosion test, Mandai test in Singapore. The estimated possible maximum peak particle velocities(PPVs) were compared with the field records. Three of the four available field-recorded PPVs lie exactly below the estimated possible maximum values as expected, while the fourth available field-recorded PPV lies close to and a bit higher than the estimated maximum possible PPV. The comparison results show that the predicted PPVs from the proposed prediction model for the maximum rebound ratio match the field-recorded PPVs better than those from two empirical formulae. The very good agreement between the estimated and field-recorded values validates the proposed prediction model for estimating PPV in a rock mass with a set of joints due to application of a two dimensional compressional wave at the boundary of a tunnel or a borehole.The proposed prediction model for estimating the maximum rebound ratio was applied to a field explosion test, Mandai test in Singapore. The estimated possible maximum peak particle velocities（PPVs） were compared with the field records. Three of the four available field-recorded PPVs lie exactly below the estimated possible maximum values as expected, while the fourth available field-recorded PPV lies close to and a bit higher than the estimated maximum possible PPV. The comparison results show that the predicted PPVs from the proposed prediction model for the maximum rebound ratio match the field-recorded PPVs better than those from two empirical formulae. The very good agreement between the estimated and field-recorded values validates the proposed prediction model for estimating PPV in a rock mass with a set of joints due to application of a two dimensional compressional wave at the boundary of a tunnel or a borehole.

关 键 词：blasting wave maximum rebound ratio joint stiffiaess field explosion test 

分 类 号：TD235[矿业工程—矿井建设]