高陡边坡削帮减载技术优化

Wall cutting and unloading technology optimization of high-steep slope

为减少布沼坝西帮削帮减载治理过程中爆破振动对高陡边坡的影响,维护到界边坡的稳定性,采用非电延时控制爆破技术,分台阶分层爆破开挖,沿到界边坡线进行预裂爆破.通过现场爆破试验与爆破振动测试相结合的方法,得到适合于削帮减载治理工程的爆破方案及满足到界边坡稳定成型的预裂爆破方案的参数范围,并验证了考虑高程的振速预测公式在本工程的适用性.

In order to reduce the influence of blasting vibration on the slope and maintain the stability of the final slope during the process of wall cutting and unloading management, this paper introduced the non-electric delay controlled blasting technology and excavation in layers and steps. Pre-splitting blasting was used in the final wall. Combining the field blasting experiment and blasting vibration test, this paper obtained the reasonable blasting scheme which is suitable for the wall cutting and unloading engineering, and parameter limits of pre-splitting blasting which is satisfied for the final slope. The velocity prediction formula considering elevation is verified for its applicability in this project.