摘要
文章采用Geostudio软件中的Quake/w模块和Slope/w模块对边坡进行了爆破稳定性研究,在Quake/w模块中加入了爆破振动速度时程曲线和降雨后实测的边坡水位线作为数值计算的两种边界条件,并将动态响应结果导入Slope/w模块中,应用有限元极限平衡法计算爆破振动时边坡的安全系数,以此分析考虑水时边坡在爆破振动影响下的稳定性.同时,为研究水位线对计算结果的影响,分别将有水位线、无水位线及自重应力场下三者的计算结果进行了对比分析.研究表明,与纯自重应力场作用下的边坡稳定性相比,爆破振动下的安全系数降低了6.88%,爆破振动与地下水联合作用下的安全系数降低了24%,地下水对边坡稳定性有非常明显的影响.
This paper studies the influence of blasting vibration on the slope stability by using Quake/w module and Slope/w module of Geostudio software, as two kinds of boundary conditions for numerical calculation. The velocity time history curve of blasting vibration and slope water line measured after rainfall are added to the Quake/w module, and results of dynamic response are imported into the Quake/w module, with the limit equilibrium method used to compute the safety factor of slope blasting vibration. Then, the stability of the slope containing water is analyzed in the influence of blasting vibration. Meanwhile, in order to study the effect of water level on results, the three results that contain water line or not and under self-weight stress field are compared and analyzed. Research shows that compared with the safety factor of slope stability under pure gravity stress field, it reduced by 6.88 % under the blasting vibration, and 24 % under the joint action of blasting vibration and groundwater. Thus groundwater had obvious influence on the slope stability.
出处
《江西理工大学学报》
CAS
2015年第1期43-48,共6页
Journal of Jiangxi University of Science and Technology
基金
江西省科技支撑计划项目(20141BBG70097)
江西理工大学研究生创新专项资金项目(YC2013-X02)
关键词
爆破振动
地下水
降雨
边坡稳定性
blasting vibration
groundwater
rainfall
slope stability
