Feasibility Evaluation Of Deep Resource Exploitation In Tengbei Coalfield

The South resource exploitation of the original minefield in Dongda coal mine has stepped into the late stage.The shallow resources can not meet the demand of 750 thousand t/a in the coal mine,and it is imperative to exploit the deep coal resources.In this paper,by introducing the natural conditions and resource occurrence of deep coal resources in Tengbei coalfield,the theory and method of coal mining is combined with engineering economics,this paper discusses the three aspects,it included the technical feasibility,economic rationality and safety,it evaluated the open mining value of deep resources in Tengbei coalfield,and provided the basis for enterprise decision-making.The main contents and conclusions of this paper are as follows:(1)Introduce the basic situation of Dongda coal mine and coalfield.(2)The design of deep coal resources is designed,including the design of the mine field development,the division of the mining area,the layout of the working face,the plan of the working face recovery and the formation of the lower section of the working face.The feasibility evaluation of the deep coal resource is exploited in the Tengbei coal field from the technical point of view.(3)Economic analysis of Tengbei coalfield mining,including:coal mine construction investment,coal mining cost,financial static and dynamic evaluation,coal mine investment project profit and loss balance analysis and sensitivity analysis,the feasibility is evaluated from deep coal mining in Tengbei coal field from the economic angle.(4)The risk assessment of deep coal resource exploitation in Teng North:the risk factors are identified from three aspects of natural risk of coal resources,coal mine economic risk and coal mining risk.Combined weight method is used to calculate the weight of the two level index,and the risk grade is judged on the deep resource mining project of Tengbei coal field;The maximum membership value of matrix is 0.3971,corresponding grade evaluation is light risk.Finally,the corresponding risk measures are put forward.