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Research and Application of Mining Technique of Large Cutting Height Workface in Extremely Thick Coal

Author: ZhouGuangHua
Tutor: WuYongPing；XiaoLei
School: Xi'an University of Science and Technology
Course: Mining Engineering
Keywords: Thick coal seam Large mining height Large section roadway Safe Mining
CLC: TD823.254
Type: Master's thesis
Year: 2010
Downloads: 335
Quote: 8
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Abstract


Ning Dong mine is one of the state approved the construction of 13 hundred million tons of large coal bases , the core is more than 6.0 m thick coal seam mining technology and the breakthrough of the domestic coal mining equipment . Ning East mining complex the exploitation of Yangchangwan technical conditions , seam dips to 15 ° the local angle up to 20 ° towards the ups and downs of 8 to 12 ° angle , rock joints and fissures , lateral pressure , serious film to help local roof fall how science to solve complex thick coal seam mining high security and efficient mining technology is the technical problems. The paper thick coal seam in order to the mine complex Yangchangwan conditions with large mining the high mining technology background , in -depth investigation and analysis of the Ning Dong mine complex geological storage environment , Large Working geological features and mining conditions under the premise , rock mechanics experiments, similar physical simulation , numerical modeling , and site monitoring methods and means , in-depth analysis of complex extra-thick flammable the seam full-height Overburden Strata mobile strata behavior regularity and large variability of goaf coal strata movement in space . Scientifically and reasonably determine the thick coal seam once adopted a wholly- high mechanized mining stope height and device key technical parameters ; proposed a complex thick coal seam with large mining height device running and recovery security protection technology , effective anti- down anti-skid measures taken , to ensure that the stability of the working face , effectively curb frame before the roof fall and the coal wall spalling , to achieve a safe and efficient mining . This study provide the Ning Dong Mine and surrounding mine thick coal seam efficient and safe mining worth learning advanced techniques and technologies , raise the level of China 's coal mining technology to produce a positive role in promoting and far-reaching impact .

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CLC: > Industrial Technology > Mining Engineering > Mining > Coal mining > Underground mining methods > A variety of hidden conditions of coal seam > Various thickness of coal seam > Thick Coal Seam
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