【摘要】 针对某凸形岩质边坡爆破开挖工程,分析了爆破扰动对边坡岩体稳定的影响,讨论并确定了该岩质边坡的质点振动速度安全阈值。通过对现场爆破荷载作用下边坡岩体质点振动的跟踪监测数据,得到了该凸形坡体的质点振动衰减规律。讨论了边坡形状对质点振动放大效应的影响程度,并给出了该类边坡岩体测点安装装置的基本措施。数据回归表明:该凸形边坡体的爆破质点振动速度随高程的增加,存在高程放大效应,相比较非凸形边坡岩体而言,凸形边坡工程的高程放大效应更为显著。更多还原

【Abstract】 In view of the rock slope blasting excavation,the slope mass stability was analyzed under blasting loading,and the particle vibration velocity threshold of the convex rock slope was determined. The particle vibration of the convex slope attenuation law was obtained through monitoring data on site,and the degree of amplification of the particle vibration about the shape of slope was also discussed. The data regression show that the particle vibration velocity of the convex slope blasting was increasing with the altitude,which proved the existence of altitude amplification effect. Compared with other shape rock slope mass,the altitude amplification effect of convex slope engineering was more obvious.更多还原