露天高陡型边坡爆破振动监测和稳定性分析

采用现场爆破振动监测方法，对边坡进行爆破振动监测，并结合Geo-Studio二维仿真软件对爆破振动作用下的边坡稳定性进行研究。研究结果表明：随着边坡高程的增加，测点峰值振动速度逐渐减小，少部分存在高层放大效应；个别测点的爆破振动速度过大，即将超过爆破振动安全允许标准，主要原因是爆破单段药量过大，故需进行爆破参数优化。通过数值模拟分析，当边坡整体安全系数在1.050～1.152之间，在爆破振动作用下，边坡局部容易出现失稳。主要表现为：+202 m平台，在断层构造的影响下，边坡坡脚和坡顶瞬态变形量较大，极易在强降雨条件和爆破扰动下发生局部滑塌，需要对边坡加强监测和维护并采取一定的加固措施。

Blasting Vibration Monitoring and Stability of Open High Steep Slope

In order to determine the stability of open high and steep slopes under the influence of blasting vibration, the field blasting vibration monitoring method was adopted to conduct the blasting vibration monitoring on the slopes, the slope stability under blasting vibration was studied by combing Geo-Studio two-dimensional simulation software. The research results show that the peak vibration velocity of the measurement points gradually decreases with the increase of slope elevation, and a few parts have the effect of high-level amplification. The blasting vibration velocity of individual measurement points is too large, which is about to exceed the safety standard of blasting vibration, mainly because the blasting single section dosage is too large, so the blasting parameters need to be optimized; the overall safety coefficient of the slope obtained from numerical simulation analysis is between 1.050 and 1.152, and the slope is prone to local instability under the action of blasting vibration. The main manifestation are as follows: +202 m platform, under the influence of the fault structure, the transient deformation of the slope foot and slope top is large, and it is very easy to occur local landslides under the strong rainfall conditions and blasting disturbance, so it is necessary to strengthen the monitoring and maintenance of the slope and take certain reinforcement measures.