【摘要】 高陡边坡下伏矿体的开采活动对边坡的稳定性影响显著。同时考虑到岩体力学参数和爆破荷载的随机特性,以爆破震动引起的高陡边坡岩体稳定性为研究对象,建立了在爆破震动影响下基于首次超越破坏理论的高陡边坡动力可靠性评价方法。以云南省某铅锌矿大明槽高陡边坡下伏古矿冶炉渣矿爆破开采为例,应用爆破震动动力可靠度方法分析了现有爆破开采方案对大明槽高陡边坡稳定性的影响,模拟结果动力可靠性概率Pr(a)=1,表明现有爆破开采方案是可行的。更多还原

【Abstract】 The stability of high and steep slope is greatly influenced by underneath ore body mining.Considering random features of the mechanical parameters of rock and blasting loads,take the slope stability as the research object,the dynamic reliability evaluation methods is established based on first-excursion failure theory caused by blasting vibration influence.Applying the proposed theory to analyze the Da MingCao high and steep slope stability with blasting mining of the backfilling ore of ancient slag at Zhao Tong lead-zinc mine in Yunnan province.Simulation results of dynamic reliability probability Pr(a)=1,which shows that the current blasting mining plan is feasible.更多还原