Research On The Optimization Of Large-scale Equipment Hoisting Scheme Based On The Analytic Hierarchy Process

With the rapid development of the national economy and the continuous advancement of science and technology in recent years,infrastructure construction,chemical,and smelting projects are developing towards large-scale and complex trends.The volume of single equipment is getting larger and larger,resulting in the widespread application of large-scale equipment hoisting,so that the selection of hoisting methods and the optimization of hoisting schemes have attracted more and more attention.The hoisting of large-scale equipment is a project with high risk factor,high cost,and complicated influencing factors.Therefore,the establishment of a scientific and reasonable large-scale equipment hoisting scheme optimization evaluation system has played a positive role in the formulation and selection of large-scale equipment hoisting schemes.After extensively studying the relevant literature of large-scale equipment hoisting at home and abroad,this paper selected the seventh bid section of the Yunnan Pioneer Lignite Clean Utilization Experimental Demonstration Project,which the author once hosted,as an example for analysis and research.The main research contents are as follows:1)Using the Delphi method to initially obtain the influencing factors that affect the lifting of large equipment,and then classify the influencing factors according to economic factors,technical factors,safety factors,etc.,and use questionnaires to investigate;2)Established a comprehensive evaluation index system for large-scale equipment hoisting,and adopted the analytic hierarchy process to determine the weight of the evaluation index of the scheme;3)The multi-objective intelligent weighted gray target decision-making model was used to comprehensively evaluate and make decisions on the lifting scheme of large equipment;The following conclusions can be drawn from the research of this article:1)Through the use of Delphi method and questionnaire method,main factors affecting the large-scale equipment hoisting program are economic indicators,safety indicators,and technical indicators,which including equipment rental fees,site reinforcement fees,program feasibility,equipment stability,fall risk,overturning risk,collision risk,and coordination risk;2)In the analytic hierarchy process,the relative importance of various factors is studied by using a combination of quantitative and qualitative methods,and the problem of measurement differences between the various influencing factors of large-scale equipment hoisting is reasonably solved.3)The multi-objective intelligent weighted gray target decision-making model was used to comprehensively evaluate the four hoisting schemes of the three towers of H2 S concentration tower,CO2 flashing tower and thermal regeneration tower,and calculate the comprehensive effect measurement of the four schemes.The values calculated are all greater than zero,indicating that the preliminary plan is reasonable.Through decision-making analysis,it is finally determined that the single unit segmented lifting method is the most economical and reasonable.