中文摘要：

基于对顺层岩质边坡的受力分析，在极限平衡理论的基础上，应用Mohr-Column准则，按照Bishop关于边坡稳定性安全系数的定义，推导出在爆破振动作用下顺层岩质边坡稳定性安全系数的计算方法。通过算例分析，证实了计算方法的可行性，说明了爆破振动拟静力系数同顺层边坡安全系数的关系。研究结果表明，垂直向下、水平指向坡外的爆破振动荷载以及两者的联合爆破荷载对边坡稳定性安全系数的影响最大；爆破荷载拟静力系数从0起每增加0．05，爆破振动水平指向坡外和垂直向下时，层裂长度为12．76m的顺层边坡安全系数分别减少7．801％～10．665％、1．366％～1．978％，无层裂的顺层边坡安全系数分别减少7．61％～10．546％、1．473％～2．289％。同时，爆破振动产生的层裂长度、边坡长度以及联合爆破荷载的方向对边坡稳定性也有影响。

英文摘要：

Based on action force analysis of slope slice, a calculation method of safety coefficient for slope stability was proposed according to the definition of safety coefficient and the Mohr-Column criteria. Reliability of the proposed method was verified and relation between pseudo-static coefficient under blast seism and safety coefficient on rock mass bedding slope was explained by using calculation examples. Computed results in some engineering cases show that the horizontal and vertical dynamic loads as well as their combined dynamic load make the greatest impact on the safety coefficient for slope stability. When horizontal dynamic load pseudo-static coefficient is added 0.05 from 0 to 0.3, the safety coefficients are reduced 7. 801% - 10. 665% and 7. 61% - 10. 546% respectively for case that the cracked lengths are zero and 12.76 m. When vertical dynamic load pseudo-static coefficient is added 0.05 from 0 to 0.3,the safety coefficients are reduced 1.366%-1.949% and 1. 473%-2.289% respectively for case that the cracked lengths are zero and 12. 76 m. Slope length, cracked length, combined load action direction have some impacts on the slope stability.