坝基爆破开挖对碾压混凝土坝的振动响应研究

Vibration response research of blasting excavation of dam foundation on roller compacted concrete

以斯里兰卡某水电站坝基开挖为例,对其监测数据进行了回归分析,同时运用ANSYS/LS-DYNA软件,对爆破开挖过程进行了数值模拟,通过分析模拟值与实测值得出,质点振动速度可以作为控制爆破开挖的安全药量和爆心距的计算标准。

Taking the dam foundation excavation of some hydro-power station in Sri Lanka as the example,the paper undertakes the regression analysis of some monitoring data,undertakes the numeric simulation of the blasting excavation by adopting ANSYS/LS-DYNA software,and concludes the particle vibration speed can be regarded as the calculation standards for the safety explosive volume and blast center distance in controlling the blasting excavation by analyzing the simulation and tested values.