Dissertation > Industrial Technology > Mining Engineering > Mine safety and labor protection > Mine atmosphere > Mine Gas > Gas Drainage

Research on Rock Structure Evolution Caused by Mining of Protecting Strata and Relieved Methane Drainage

Author WeiLei
Tutor ShiBiMing
School Anhui University of Technology
Course Safety Technology and Engineering
Keywords Protection layer mining The structure of the overlying strata Pressure relief gas Permeability coefficient Drainage
CLC TD712.6
Type Master's thesis
Year 2007
Downloads 490
Quotes 7
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According to the theory of the protective layer , gas occurrence and flow theory , combined with masonry beams , the critical layer theory as well as coal and gas outburst theory under the protective layer of overburden strata structure evolution and mechanical properties , and at the same time , the use of numerical simulation and similar material simulation technology, mining overburden rock structural stress and strain analysis ; conduct a study on the protective layer of Destress gas migration law . Protective layer mining practices combined Huainan Coal Mine , the establishment of gas drainage system , optimize the parameters of gas drainage , reduce the protective layer of gas content , lower gas pressure , gas drainage rate , to achieve the elimination of the protected layer gas outburst purpose ; Field practice : through the protective layer (B10 coal ) mining , the use of the protective layer (B11b coal) backplane drainage tunnel marked to - wear layer grid drilling and digging gas pressure relief gas drainage tunnel on the protective layer drainage, eliminating the risk of the protective layer of coal and gas outburst , reduce the gas content of coal reduce gas emission face mining process , the B11 b the seam achieve top coal caving mining conditions , to achieve the safety of the main coal seam in rapid excavation and efficient recovery . Under the protective layer of overburden strata structure evolution and pressure relief gas drainage comprehensive study to provide a reference for the realization of the coal mining pumping integration and green mining research .

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