复杂地质下圆弧形边坡控制爆破的应用研究

为了研究复杂地质下如何将圆弧形边坡控制爆破一次成型，通过现场高陡边坡的爆破施工，介绍了圆弧形边坡控制爆破的设计原则、爆破参数及爆后效果：采用理论计算与现场施工相结合的方法，优化爆破参数，主炮孔采用现场混装乳化炸药进行装药，预裂孔采用分段不耦合装药，爆破后边坡上的半孔率达到90%以上，台阶高程偏差值不超过±300 mm,坡率偏差值不超过±0.5°。不仅节省了成本，又达到了边坡美观、整洁、稳定的设计要求，可为类似工程的边坡控制爆破提供参考。

Study on controlled blasting of an arc-shaped slope in a complex geology

In order to forman arc-shaped slope in onetime by controlled blasting under a complex geology, the design principles, blasting parameters and post-blasting effect of an on-site blasting construction of a high-steep slope are introduced. The method of combining theoretical calculation and on-site construction is adopted to optimize the blasting parameters.The main blast-holesare charged by site mixed emulsified explosives, and the segmented uncoupled charging is adopted in pre-cracked holes.The half-hole rate after blasting on the slope reaches over 90%, the deviation value of step height is ±300 mm at most, and the deviation value of slope ratio is not more than ±0.5°.This plan not only saves costs, but also achieves the design requirements of beautiful, clean and stable slopes, which could provide reference for controlled blasting of slopes in future similar projects.