煤矿开采
煤礦開採
매광개채
COAL MINING TECHNOLOGY
2014年
4期
73-76
,共4页
锚索长度%数值模拟%理论计算%深部岩巷
錨索長度%數值模擬%理論計算%深部巖巷
묘색장도%수치모의%이론계산%심부암항
anchored cable length%numerical simulation%theoretical calculation%deep rock roadway
为科学确定深部巷道支护锚索长度，以安居煤矿东部集中轨道大巷为例进行研究。首先采用数值模拟的方式，建立了大巷模型，从不同长度锚索的应力分布、位移分布和塑性区分布3个方面，分析了巷道围岩变形规律；然后通过理论计算，应用悬吊理论和组合拱理论分析了锚索的承载能力，得出了深部锚索的作用是抑制在锚索作用深度以内的弱面离层，保持围岩的连续性及力的传递，使锚固范围内围岩形成一个拱形承载岩梁，抑制上部围岩的松动变形，维持巷道的稳定。通过数值模拟和理论计算分析，成功地指导了大巷的锚索支护施工。
為科學確定深部巷道支護錨索長度，以安居煤礦東部集中軌道大巷為例進行研究。首先採用數值模擬的方式，建立瞭大巷模型，從不同長度錨索的應力分佈、位移分佈和塑性區分佈3箇方麵，分析瞭巷道圍巖變形規律；然後通過理論計算，應用懸弔理論和組閤拱理論分析瞭錨索的承載能力，得齣瞭深部錨索的作用是抑製在錨索作用深度以內的弱麵離層，保持圍巖的連續性及力的傳遞，使錨固範圍內圍巖形成一箇拱形承載巖樑，抑製上部圍巖的鬆動變形，維持巷道的穩定。通過數值模擬和理論計算分析，成功地指導瞭大巷的錨索支護施工。
위과학학정심부항도지호묘색장도，이안거매광동부집중궤도대항위례진행연구。수선채용수치모의적방식，건립료대항모형，종불동장도묘색적응력분포、위이분포화소성구분포3개방면，분석료항도위암변형규률；연후통과이론계산，응용현조이론화조합공이론분석료묘색적승재능력，득출료심부묘색적작용시억제재묘색작용심도이내적약면리층，보지위암적련속성급력적전체，사묘고범위내위암형성일개공형승재암량，억제상부위암적송동변형，유지항도적은정。통과수치모의화이론계산분석，성공지지도료대항적묘색지호시공。
In order to rationally determine anchored cable length , applying numerical software to setting up model of east concentrated rail roadway of Anju Colliery .Roadway deformation rule was analyzed from stress , displacement and plastic zone distribution of an-chored cable with different lengths .Bearing capacity of anchored cable was analyzed with overhanging theory and combined arch theo -ry.It was obtained that function of deep anchored cable was to restrict separation weak plane within anchorage action depth and keep surrounding rock continuity and force transmission , which made surrounding rock within anchorage form an arch bearing beam and keep roadway stable.Numerical simulation and theoretical calculation successfully guided anchored cable supporting construction of main roadway.
