CAJ | 학술논문

针对范各庄矿2429煤巷巷道变形严重，影响矿井安全高效生产的问题，分析了影响该巷道稳定性的因素，研究从巷道断面优化入手，结合范各庄矿2429煤巷巷道的围岩力学性质，运用FLAC3D数值模拟，建立计算模型，将圆角矩形巷道断面替代原来的直角矩形断面。通过对巷道周边塑性区分布、应力场、位移场等的分析对比，提出了锚网索支护，并进行现场的数据分析观测。得出了将巷道断面优化后，并采用合理的支护方式，巷道的力学效果大为改观。
침대범각장광2429매항항도변형엄중，영향광정안전고효생산적문제，분석료영향해항도은정성적인소，연구종항도단면우화입수，결합범각장광2429매항항도적위암역학성질，운용FLAC3D수치모의，건립계산모형，장원각구형항도단면체대원래적직각구형단면。통과대항도주변소성구분포、응력장、위이장등적분석대비，제출료묘망색지호，병진행현장적수거분석관측。득출료장항도단면우화후，병채용합리적지호방식，항도적역학효과대위개관。
Fangezhuang 2429 Coal Roadway deformation serious impacts coal mine safety and efficient production. In light of this, this pa-per, starting from roadway default optimization , anayzes factors affecting roadway stability and in combination of mechanical properties of Fangezhuang surrounding rock roadway, establishes calculation model by use of numerical simulation FLAC3D, which replaces the original Orthogonal rectangle cross-section by rounded rectangle cross-section. Through analysis and comparison of the surrounding plastic zone dis-tribution, stress force field, and displacement fields, it presents a anchor mesh and cable support and conducts on-site data analysis and ob-servational data and comes up with a result that mechanical effect of the roadway will be greatly improved by use of reasonable support method after roadway-section optimization .