CAJ | 학술논문

分层开采是厚煤开采的经典工艺，这种工艺对地表沉降的影响比较复杂。通过测试原岩物理力学参数，利用有限元软件flac3D对分层和一次采全高时地表沉降进行了数值模拟。结果表明，如果采高较小，砌体梁距煤层较近，且采完上分层后长时间停采，给顶板再生留足时间，分层开采较一次采全高对地表沉降影响要小。
분층개채시후매개채적경전공예，저충공예대지표침강적영향비교복잡。통과측시원암물리역학삼수，이용유한원연건flac3D대분층화일차채전고시지표침강진행료수치모의。결과표명，여과채고교소，체체량거매층교근，차채완상분층후장시간정채，급정판재생류족시간，분층개채교일차채전고대지표침강영향요소。
Layering mining is a topical process which has complicated effect on ground settlement .Based on testing of the initial rock mechanical parameters ,the finite element analysis software flac3D is applied to conduct simulation on ground settlement when in layering mining and mining overall height .It is shown that ,if mining height is relatively small ,distance of voussoir beams is small and enough time is given to roof regenerated for stopping coal mining is long after completely mining upper layered ,the effect of layering mining on ground settlement is less than that of a mining overall height .