露天爆破中岩根和大块产生的原因及对策研究

Causes and Countermeasures of Rock Masses and Blocks in Open Air Blasting

露天爆破大块率和根底率是衡量爆破质量的2项重要指标.但是, 因环境条件、 地质结构、 岩性组成、爆破参数与技术和施工与管理等因素的影响, 往往达不到理想的爆破效果, 爆破后难免会产生部分大块、 根底甚至底板大面积抬高等问题.基于此, 本文主要探讨产生根底及大块的原因, 然后提出针对性的预防大块及根底产生的对策.

The mass rate and base rate of open pit blasting are two important indexes to measure the quality of blast- ing. However, due to the influence of environmental conditions, geological structure, lithologie composition, blasting parameters and technology, construction and management and other factors, it often fails to reach the ideal blasting ef- fect. After blasting, it is unavoidable to raise a large area of large areas, roots and even the bottom floor. Based on this, this paper mainly discussed the causes and the reasons for the big blocks, and then put forward the correspond- ing countermeasures to prevent the bulk and the roots.