| Due to the rapid development of Chinese economy,the number of construction projects in basic engineering has increased dramatically.Blasting technology is widely used in the construction of basic engineering because of its simplicity,shortcut and low cost.China is a mountainous country.There are lots of natural high and steep slopes.In the process of mining and tunnel excavation,there will be some high and steep slopes.With the application of blasting technology in engineering,the disaster caused by blasting is becoming more and more serious.The stability of the slope is closely related to the safety of the people’s life and property.The characteristics and attenuation rule of blasting vibration wave are studied,and the effect of blasting vibration on slope stability is discussed.Controlling the intensity of blasting vibration and reducing the secondary disasters caused by blasting vibration has strong social and economic benefits.The blasting vibration wave has the characteristics of complexity,randomness,fast attenuation,wide vibration frequency range and short duration of vibration.The types of slope dynamic failure are mainly reflected in the form of caving,overturning,collapsing,landslide and seating.The characteristics of blasting seismic wave are more,and the instability mechanism caused by each parameter is also different.This paper focuses on the stability of the slope and the blasting vibration effect,through on-site monitoring of blasting construction site of blasting seismic wave and processing of monitoring data of blasting vibration velocity versus time curve,combined with the "safety regulations",determine the slope stability under blasting vibration.At the same time,the most dangerous 10-10 ’section of the mine village slope is selected and the static and dynamic analysis is carried out by slide software.In the process of calculation to simulate natural conditions,random combination of rainfall condition and seismic condition and various conditions,analyzed the minimum stability coefficient of slope surface and deep,various conditions calculation results can meet the engineering stability requirements,combined with the stability evaluation of the slope monitoring data and comprehensive analysis,provide the reference for the construction of the slope the same type. |
