摘要
结合公格营子煤矿公路下计划开采区域煤层赋存情况,确立了似膏体巷式充填采煤工艺,建立了FLAC3D数值模拟简化模型,并进行模拟。利用威尔逊煤柱设计改进公式计算煤柱所能承受极限荷载的理论值,对该理论值和模拟的暂留煤柱垂直应力进行比较分析,验证暂留煤柱宽度不同时煤柱稳定性,确定不同开采方案的可行性。
According to the coal seam occurrence conditions of planning mining area under highway in Gonggeyingzi Coal Mine, the mining technology of paste - like roadway backfilling was determined, and FLAC3D numerical simulation simplified model is established and applied. The improved Wilson pillar design formula to is used to calculate the limit load of the theoretical value that the coal pillar can bear, and comparative analysis of the theoretical value and the vertical stress of remaining coal pillar is made, it verify the stability of different remaining coal pillar widths and determine the feasibility of different mining schemes.
出处
《煤矿安全》
CAS
北大核心
2014年第6期163-165,169,共4页
Safety in Coal Mines
关键词
公路
充填开采
极限载荷
煤柱宽度
数值模拟
highway
backfilling mining
limit load
coal pillar width
numerical simulation
