Analysis Of The Open Cast Mine Near City Influence On The Mine Slope And The Surrounding Buildings

In recent years,the open pit mining near urban areas has been increasing continuously,and the open pit mining process can not be separated from the production blasting.This continuous production blasting can affect the stability of mining slope;on the other hand,the blasting vibration will also have some impact on nearby buildings;on the outskirts of the city people’s life has a certain impact on the environment or damage,thus affecting the normal life of the people.Therefore,it is necessary to solve the problem of the stability of the slope and the safety of the surrounding buildings.In this paper,the influence of blasting vibration on the slope and nearby buildings is studied and analyzed,which can provide technical reference for the reasonable exploitation of the mine.Due to the influence degree of blasting in mines is controlled by many factors,which means many fuzzy factors exist in the objective and accurately,so this paper according to the theory of fuzzy measure model,given the influence of blasting vibration on the slope stability of the membership function and the distribution density function,calculation and analysis of slope stability of open-pit mine near the city on the basis for China’s specific the impact on the surrounding buildings and models.In the process of analysis,according to the fuzzy parameters is difficult to determine,according to the engineering of a large amount of measured data,the use of genetic programming method of fuzzy measure model were determined.According to the specific engineering example,based on field observation data has been measured blasting vibration velocity of blasting in value,and according to the failure criterion,the influence degree of blasting vibration to the stability of open-pit slope and surrounding buildings.To investigate the influence of blasting,this paper also takes into account the different explosive amount and different blasting distance conditions,calculate the corresponding slope failure probability is obtained,and the analysis of the specific law changing rules of surrounding buildings with different explosive amount and different blasting distanceconditions.Thus in order to use explosives blasting production evaluation in is reasonable,to control the blasting to improve blasting effect at the same time,also taking into account the slope and surrounding building safety.Comprehensive analysis shows that the method presented in this paper,considering the vibration condition of production blasting under the influence of excavation on the stability of open-pit slope and nearby buildings has important practical significance;can provide scientific reference for safe mining and protection of nearby buildings.