CAJ | 학술논문

针对坚硬厚层顶板煤层采用长壁开采容易形成大面积悬顶的问题,根据黑龙江省某矿地质条件,采用理论计算和数值模拟方法,研究了条带开采的合理采留宽度。结果表明,该矿条带开采采出宽度为30 m,煤柱留宽为21.73 m较为合理,条带煤柱稳定性较好。理论计算和数值模拟结果一致,为避免顶板大面积垮落、保护地面建筑物安全和矿井生产安全提供了依据。
침대견경후층정판매층채용장벽개채용역형성대면적현정적문제,근거흑룡강성모광지질조건,채용이론계산화수치모의방법,연구료조대개채적합리채류관도。결과표명,해광조대개채채출관도위30 m,매주류관위21.73 m교위합리,조대매주은정성교호。이론계산화수치모의결과일치,위피면정판대면적과락、보호지면건축물안전화광정생산안전제공료의거。
Aimed at addressing a large area of roof overhang due to longwall mining of coal seams with thick and hard roof,this paper is a research on the reasonable widths of strip mining by using theoretical calculations and numerical simulation,based on the geological conditions of one mine in Heilongjiang province.The results show that the mining width of 30 m and the more reasonable width of 21.73 m meant for coal pillar,produce a more stable strip pillar.The theoretical calculation is consistent with the numerical simulation results.This result provides a basis for avoiding the roof collapse,and protecting the safety of the ground buildings and ensuring mine production.