Study on the amplification effect of open-pit mine blasting elevation based on AHP

In the study of open pit mine blasting process, the elevation amplification effect is an important factor that cannot be ignored.In order to understand the influence of elevation amplification effect, this paper starts with the basic theory of hierarchical analysis, and considers the geological condition stake, the source factor and the transmission path factor.It is concluded that the weights of its influencing factors include geological structure, elevation difference, and rock nature, single-segment maximum amount of medicine, burst heart distance, burst ingesting method, corresponding weight values are 0.269 5, 0.195 0, 0.170 5, 0.110 0, 0.085 5, 0.065 0, 0.049 4, 0.032 3, 0.022 8.For the analysis of the field measured data, when the elevation difference reaches 36 m, the three-way vibration peak occurs elevation amplification effect; due to the high degree of rock development above the flat plate of 1264, the rate of vibration at the elevation reached 36 m is still relatively fast, and the elevation amplification effect has not occurred, which further confirms that the geological conditions have an important role in the blasting vibration elevation amplification effect.