Research And Application Of Overmining In Banshi Coal Mine Fully Mechanized Working Face

Coal in our country’s primary energy consumption in up to seventy percent, and the coal power generation received power accounted for eighty percent of the national total power, coal importance is self-evident. Ascending mining coal mine production is an important subject that must be solved. In some geological and equipment level meet the premise, from safety production, production technology and prolong service life of mine perspective, the program mining technology has irreplaceable advantages, when the descending mining method cannot be produced or difficult mining and the inverse process mining for these problems can be readily solved, can avoid the descending mining and cause difficulties. Therefore, reasonable use of ascending mining has a very important significance.Due to the limitation of the mining equipment and market, hunchun mining group co., LTD plate stone coal mining mining a first twenty number layer coal mining, has12002,12004,12006three working face. Twenty number seam on19th coal seam no mining reserves of one million three hundred thousand tons. Now a mining coal seam no. Twenty reserves on the verge of dry, result in mine in mining face is very nervous, in order to mining in need, prepare to mining twenty number layer coal on19th coal seam, in order to solve the coalface DuanDang problem, the best solution is mining goaf12002on11902face.This paper plate stone coal mine goaf12002on11902working face occurrence conditions, the production field data collection, roadway roof and floor of the mechanical parameters of the laboratory testing, and ascending mining theory analysis, discrete element method program UDEC and two dimension display finite difference code FLAC simulation calculation method and technology, combined with the coal seam coalfield exploration ascending mining12002face of rock mass around two lane change rule, overburden mine pressure appeared to rule and19by coal seam and coal seam mining activities, the influence of relationship between time and space. According to the coal thickness, coal’seam roof and floor space, lithology and interlayer structure, production time and so on influence factors of ascending mining of11902working face and the mining design.