岩体结构面对边坡爆破的影响及改进措施

Effect of Geological Discontinuities on Slope Blasting and Improving Measures

分析了结构面垂直水平面的边坡、顺层边坡和反倾斜边坡的光面爆破效果。结构面垂直水平面边坡爆破后,容易形成锯齿形坡面,可以通过多打孔、少装药等措施改善爆破效果。顺层边坡爆破后,容易发生滑坡,可通过爆破前边坡加固、间隔装药爆破降低爆破对边坡保留岩体的破坏作用。反倾斜边坡爆破后容易形成局部超挖,可通过减小边坡坡面角和分段装药爆破的方法改进爆破效果。本研究对改善类似边坡爆破效果有一定的参考价值。

Smoothing blasting effect on slope of discontinuities up-righting to level,bedded slope and anti-dip slope was analyzed.It easily formed zig-zag slope after blasting of slope of discontinuities up-righting to level,and blasting effect is improved through more borehole and much less charge.It easily formed landslide after bedded slope blasting,and breakage effect of the reserved slope rock is depressed through reinforcement slope in pre-blasting and smoothing blasting of air-space charging.It easily formed over-excavation after blasting of anti-dip slope,and blasting effect is improved through depressing slope angle and blasting of air-space charging.For improving the slope blasting effect,it has some reference values.