Research On Geo-environment Safety Assessment And Prevention System Of Resource

Pingdingshan is a typical resource-based industrial city,rich in mineral resources,the main exploitation and utilization of coal,salt,iron and other 12 kinds of minerals.Based on the investigation and analysis of geo-environment status,the contradiction between regional economic and social sustainable development and environmental pollution,geological disaster,resource destruction and other geo-environment problems caused by mining,industrial and agricultural production and engineering construction are becoming increasingly prominent.Based on the henan Provincial science and technology project "Regional Geological disaster Risk Regionalization and Geological Environment Restoration and Management",this paper carried out the geo-environment safety assessment and risk prevention and control research in Pingdingshan city,with the goal of establishing the regional geological environment risk prevention and control system.The research of geo-environment safety assessment model,control technology of typical geo-environment disaster,geo-environment risk monitoring and early warning system are emphasized.The research results are of great significance to guide the prevention and mitigation of regional production safety,ecological restoration of geo-environment,scientific planning of land use and sustainable development strategy.The main research contents of this paper are as follows:(1)Based on HAYASHI quantification theory and FUZZY theory,FUZZY HAYASHI ⅲ model for quantification of qualitative attributes in risk attribute judgment of different types of geo-environment problems was proposed,which solves the problem of fuzziness of risk attribute judgment criteria of geo-environment problems.The risk weights and typical geological environment problems of pingdingshan city were determined.At the same time,based on the theory of risk management and the two-factor risk model that proposed by UN office,we put forward and applied social environment support(SES),the concept of geo-environment was established in the field of active disaster risk index model,in order to solve geo-environmental safety assessment problem,and expande its application scope.(2)Starting from the risk degree of typical geo-environment hazards,a three-level index system for safety assessment of typical geo-environment problems were constructed.The SES evaluation model was constructed from two dimensions of single area support force and neighborhood linkage support force.The safety assessment,regionalization and comparative analysis of regional typical geo-environment problems under active and passive disaster prevention environment were carried out.The results show that after the introduction of SES,the risk area of higher grade and above in the study area decreases from 13.81% to 8.51%,and the regional geo-environment risk index decreases obviously.According to the assessment results and management requirements,the study area were divided into 10 key control areas,5 sub-key control areas and 4 general control areas.(3)Selected the typical geo-environment problem of key control areas,and carried out research on ectopic remediation technology of groundwater pollution in mining area under production state and prediction of potential pollutant migration in mining area under pit closure state.In order to improve the economic efficiency of groundwater pollution ectopic repair process,we carried out the organic polymer flocculants PAM flocculation process research,the study found a high yield experiment of the intermediate HMF,realized the efficient preparation of the flocculant.Under the same condition,we prepared a borooxygen covalent organic framework to remove toxic heavy metal cations based on density functional theory.The results can be used in the development of new high-performance adsorbents.In addition,the transport regularity of potential groundwater pollutants in pingmei No.7 mine area under the condition of pit closure were predicted,and the hydrogeological conceptual model,underground flow mathematical model and solute transport model were established,and model identification and verification were carried out,providing a space-time dimension reference for the prevention and control work.The prediction results show that the maximum plane migration distance of potential pollutants was 3184 m after 3650 days,and the maximum plane migration distance was located at the contact between zhanhe river recharge and quaternary strata and lower unconformity strata in the south of Pingmei No.7 Mine.The maximum vertical migration range was 199 m,and the maximum vertical migration distance was located in the upper reaches of Zhanhe in the southeast of the mining area,where the quaternary strata contact with the lower unconformity strata.(4)The geological environment safety prevention and control system for different geo-environment hazards has been developed.Based on cloud computing technology,GIS technology,active disaster prevention model and geo-environment monitoring and early warning model,we developed the system.Supported by shared comprehensive basic information base such as spatial information and business information,the system has powerful operation,management and monitoring capabilities of multi-business departments,multi-exchange tasks and multi-data exchange mode.With geo-environment risk point management,geo-environment monitoring,risk assessment and zoning,SES assessment and zoning,emergency decision support management and other functions.It has realized the integration of "real-time monitoring,accurate warning,safety assessment,emergency decision" and intelligent control of geological environment hazards in Pingdingshan city.