小湾边坡爆破开挖降震措施探讨

Discussion on Measures for Reducing Blast Vibration in Xiao-wan Slope Excavation

爆破震动对岩质边坡稳定性的影响是极其复杂的,小湾边坡开挖爆破规模和强度大,爆破震动对边坡的稳定性产生了较大的影响。通过对现场爆破震动监测数据的分析和总结,得出小湾边坡爆破震动传播衰减规律。从控制能量源、优化爆破参数、优化爆破网路、避免爆破震动积累损伤效应等几方面探讨减震降震措施,其方法正确、效果明显,提高了小湾边坡的动力稳定性,确保施工的连续顺利进行,并为类似工程提供可借鉴的经验和有益的指导。

The impact of blast vibration on the stability of rock slope is extremely complex. The blast scale and intensity of Xiao-wan slope excavation is rather big, the blasting vibration has had the tremendous impact on the stability of the slope. Through analysis and summary of the on-site blast vibration monitoring data, the blast vibration dissemination weakening rule of Xiao-wan slope is obtained. Measures for reducing vibration from controlling energy source, optimizing blast parameter, optimizing blast network, and avoiding demolishing the vibration accumulation damage effect and so on are discussed. The method is correct and the effect is obvious, which would enhance the dynamical stability of Xiao-wan slope, guarantee the construction to be carried on smoothly and continuously, and provide reference and instruction for similar projects.