Research On The Stability Of Slope Under The Action Of Blasting Vibration

In recent years, open-pit mining of scale and speeding ha ve been expanding and developing rapidly. The original open-pit mining is deeping over the years which cause the slope exposure height is increasing. The stability of slope directly affects the safety of production equipment and personnel even of the mine economic benefit. There are many factors influence the slope stability which include the weight of rock and structure of slope and fissure in water also contain the production blasting etc. The production blasting is one of the important factors to influence the stability of the slope.It is researching on the stability of slope under the horizontal vibration and vertical vibration of production blasting by using the traditional quasi-static method and finiteelement method for the typical slope. The stability of slope is also studied with different vibration strength. The results show that the result of using the traditional quasi-static method is larger and more accurate than the result of the finite-element method. The horizontal vibration of mine production blasting is the main factors which leads the slope in instable. However, the slope stability is not significantly influenced with the vertical vibration. It puts forward the safety vibration velocity and the critical failure vibration velocity of the typical and the different form slope.It is studied the slope rock mass and the existing form of the engineering geological conditions with scene investigation of Sijiaying open-pit slope. There are two blasting vibration monitoring lines in the east and southeast slope layout two which is used to monitore the blasting vibration of the production blasting. It is researched the attenuation law of blasting vibration and got east and southeast K and α value of the slope. The slope stability is analysed of Sijiaying Iron Ore open-pit east slope. The east slope is in stable state without considering the blasting vibration. The safety vibration velocity and the critical vibration velocity of east slope are got by the theoretical calculation and numerical simulation. The dynamic response of slope under blasting vibration is studied by LS-DYNA. The particle vibration in different position of slope shows different characteristics and landslide surface position is changing with the propagation of seismic wave.