Risk Analysis And Control Of Underground Engineering Construction Safety

With economic development and technological progress,people pay more and more attention to security issues.Frequent occurrence of safety accidents on the construction site has aroused people's widespread concern about construction safety.In addition,with the gradual decrease of land use area,people are more and more concerned with the development and utilization of underground space,and the safety issue is of particular concern.In order to correctly evaluate the safety of underground engineering operations and reduce the occurrence of casualties,in this paper,underground construction process prone to accidents caused serious consequences,choose the following aspects of the analysis and evaluation:(1)Risk analysis and evaluation of deep foundation pit excavation: Through the constructi on of the index system of the impact of hydrogeological conditions involved in the excavation o f deep foundation pit,the influence of the geometric conditions of the space,the depth of the e mbedment of the retaining structure and the influence of the construction load,analytic Hierarc hy Process for qualitative analysis,combined with extenics theory to quantitatively evaluate,to achieve qualitative and quantitative combination,according to the evaluation results,find the ma in influencing factors that influence the excavation process of deep foundation pit.(2)Analysis and Evaluation of Lifting Risk of Large Hoisting Machinery: Combining the four factors of "people,machine,ring and pipe" to construct the index system,according to the analytic hierarchy process to identify the important factors that affect "people,machine,ring,tube",through unascertained mathematics,a quantitative analysis of the on-site risk of hoisting operation of large-scale hoisting machinery for underground engineering is carried out.(3)Analysis and evaluation of the installation of electromechanical facilities and equipment for underground construction: through qualitative analysis to find out the main factors affecting the safety of underground mechanical and electrical installation equipment,construct index system,combined with analytic hierarchy process and gray model theory to identify the weak links that affect the installation of mechanical and electrical facilities and equipment at the construction site.According to the qualitative and quantitative analysis of the above three aspects,realize the underground construction risk analysis and evaluation,put forward the corresponding safety measures to achieve the safety of the construction site.