Dissertation > Industrial Technology > Mining Engineering > Mining > Coal and oil shale underground gasification > Comprehensive utilization of coal > Gangue, stone coal

Safety Assessment of Coal Gangue Hazard and Analysis of the Greening Reclamation

Author BiYing
Tutor MaHeng
School Liaoning Technical University
Course Safety Technology and Engineering
Keywords Gangue AHP Fault Tree Analysis Multi-level fuzzy comprehensive evaluation Reclamation
CLC TD849.5
Type Master's thesis
Year 2011
Downloads 39
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Gangue constantly stacked to form a waste dump is not only a direct occupation of land caused by land pollution , and threatened vegetation growth , resulting in the mine air pollution , serious pollution of surface water and groundwater , and waste dump may collapse and explosion . Therefore , the safety evaluation of the rock hill is a treasure and the need for rational use of land resources is the need of the protection of the environment , but also to protect the people 's production and life safety needs . Gangue in the long-term stacking process not only causes environmental impact , and will be , directly or indirectly , the personal safety of harm , there are security risks . The gangue specific potential hazards : atmospheric pollution , contaminated soil , contaminated surface water , contaminated groundwater , gangue dump explosion waste dump collapsed , radiation contamination . Therefore , starting from the point of view of safety in production , it is the strict control and management . In this paper, AHP application of fault tree analysis method for determining the cause of the waste dump potentially dangerous evaluation index weight , to establish a total of three levels , comparing seven potential risk factors , the maximum credible accident after the analysis of the waste dump explosion ; waste dump explosion this a maximum credible accident further qualitative and quantitative calculation , come to structure the highest two important factors , caused by climate and environmental conditions ; final application of fuzzy mathematics in the multi-level fuzzy comprehensive evaluation theory the Waste Dump overall risk evaluation ; coal mine the Waste Dump safety system established waste dump green reclamation instance application . Through this research : the application of AHP and Fault Tree Analysis to identify potentially hazardous waste dump exists , application of multi-level fuzzy comprehensive evaluation to conduct a safety assessment of the waste dump , the last of the prevention and treatment of the waste dump piled exist measures.

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