爆破荷载下边坡动态响应的FLAC3D模拟研究  

FLAC3D SIMULATION FOR DYNAMIC RESPONSE OF THE SLOPE UNDER EXPLOSION LOADING

作　　者：王建国[1] 黄博[1] 吴海燕 吴浩[1] 常庆[1] 卢湘娟 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083 [2]北京岩土工程勘察院,北京100083

出　　处：《工程爆破》2014年第2期6-9,共4页Engineering Blasting

摘　　要：为了研究爆破作用下布沼坝西帮的动态响应规律,通过对边坡施加一个实测振动波,利用FLAC3D分别从应力场分布、速度和位移响应规律3个方面来进行计算结果的研究和讨论。结果表明:在爆破荷载的作用下,随着边坡深度的增加,边坡体所受的压应力逐步增大;随着高程的增大,边坡质点的速度和位移均出现放大作用;边坡主要还是受自重应力影响,清帮爆破荷载对边坡稳定性影响不大。In order to research dynamic response rules under explosion loading of the western slope in Buzhaoba, a model of dynamic calculation and simulation had been established and a vibration wave had been imposed on the slope. The calculation results had been researched and discussed from three aspects including distribution of stress field, velocity field and displacement field by using software FLAC3D. The results showed that under the action of blasting loading, compressive stress of the slope increased gradual- ly with the increasing of the slope depth, and the particle velocity and displacement of the slope presented amplification effect with increasing of the elevation. Dead weight stress was the main influence factor, and blasting loading had little effect on the slope.

关 键 词：爆破荷载 边坡 动态响应 FLAC3D模拟 

分 类 号：TU457[建筑科学—岩土工程]