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Study on the Water Disaster Evaluation of the Upper Rocks during Several Coal Seams Mining

Author: ChenXiangLing
Tutor: WeiJiuChuan；GuoJianBin
School: Shandong University of Science and Technology
Course: Mineral prospecting and exploration
Keywords: Hydrogeological characteristics Fractal dimension Composite analysis of multi-factor Fuzzy Clustering Numerical Simulation
CLC: TD745
Type: Master's thesis
Year: 2009
Downloads: 104
Quote: 1
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Abstract


In this paper, Jining III coal mine in 12th District 3_ 3_ under the safe mining of coal seam , the Menace of the extent of a detailed analysis of the mining district seam roof hydrogeological characteristics and water . Depositional and structural geology analysis method by collecting existing exploration data mining area and expose the geological and hydrogeological data , 3 coal roof lithology , distribution and variation of the main sands , the combination of sand and shale characteristics Jurassic the Jurassic lower the lithology its structural characteristics ; fault fractal dimension value box covering method to quantify the construction of indicators of the mining area , a reasonable evaluation of the structural complexity of the mining area ; multifactorial composite analysis methods and fuzzy clustering analysis method, combined with three - dimensional electrical method of roof aquifer mining area first face detection predict the the top plate aquifer within the scope of the mining area rich water , and hydrogeological partition ; the Sun shops faults on the east and west boundaries of the mining area faults and F8 fault containing under natural conditions , water conductivity using FLAC-3D software for multi- seam repeated mining the fault activation mechanism under the conditions and overburden Strata Movement analog reasonable fault coal pillar Size ; predicted 3_ 3_ lower coal repeated mining on the roof with height ; statistical analysis of the distance between the Jurassic and seam height compared with the development of the two belts , to determine the remaining impermeable layer thickness distribution Jurassic bottom of the aquifer layer of charge waterborne ; integrated roof strata structure , sandstone aquifer layer rich aqueous and acquiesce with height and other factors , 3 coal entry board water damage level of threat were evaluated ; and based on water-filled aquifer developmental characteristics were evaluated and charge the aqueous expected first mining face of the mining area of water inflow ; research results provide a scientific basis for the mining area coal mining water prevention decisions .

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CLC: > Industrial Technology > Mining Engineering > Mine safety and labor protection > Mine drainage and water shutoff > Prevention and treatment of mine flood
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