Influencing Factors Analysis And Control Technology Of Slope Stability In Yan Shan Iron Mine

After nearly ten years of mining,the Sijiaying Yanshan Iron Mine has a complex geological structure above the-82 m step,and the upper part is a thick soil slope,and the local side is damaged.On July 23,2016,a landslide occurred near the N26 line,causing no damage at that time.The height of the landslide was about 25 m,from-42 level to-67 m level.The landslide body was 40 m long and the volume was 1000m3.In February of the following year,it fell again in the position where the landslide had occurred,which seriously affected the safe production of the mine.Therefore,research on the stability control and treatment technology of the slope of Yanshan Iron Mine is an important issue to be solved in the mine.In this paper,based on the complex slope problem of Yanshan Iron Mine,the main influencing factors of the soil slope are determined based on the site survey of the slope,based on the analysis of engineering geology and hydrogeological conditions,combined with the field test of the indoor test.The numerical simulation technology was used to analyze and calculate the stability of several key slope sections such as slope grouting and water shutoff,repeated dryness and saturation of precipitation,and deep inclined hole drainage.The effect of slope plugging and discharging engineering was verified.According to the calculation results of the explosive level,the blasting grading and zoning were carried out,and several important blasting technical parameters were obtained.The difference between the electronic detonator and the ordinary detonator was compared and analyzed,and the average vibration velocity of the electron detonator was reduced.Nearly 41.3%.By adopting the techniques of earthquake reduction,pre-cracking control blasting,drainage and anchor spray support,the stability of the slope is ensured,especially the introduction of digital detonators,so that the blasting vibration can be effectively...