CAJ | 학술논문

为了研究综放开采方式下围岩的应力分布特征,以大佛寺煤矿40301综放工作面为背景,基于理想弹塑性本构模型及Drucker-Prager屈服准则,利用ANSYS有限元软件,探讨围岩拱形存在的合理性,分析采场周围应力场的分布规律。结果表明：工作面前方的应力随开挖的进行总体呈现增长趋势,其峰值所在位置随着围岩拱形高跨比的变小而逐渐远离工作面。
위료연구종방개채방식하위암적응력분포특정,이대불사매광40301종방공작면위배경,기우이상탄소성본구모형급Drucker-Prager굴복준칙,이용ANSYS유한원연건,탐토위암공형존재적합이성,분석채장주위응력장적분포규률。결과표명：공작면전방적응력수개알적진행총체정현증장추세,기봉치소재위치수착위암공형고과비적변소이축점원리공작면。
Aimed at identifying the stress distribution of surrounding rock marked by the method of top-coal caving mining,this paper describe the use of ANSYS to study on the rationality of arch-shaped surrounding rock existence and analyze the stress field around the stope,building on 40301 coal mining face in Dafo Temple Mine and perfect elasto-plastic model and Drucker-Prager criterion.The results show that the stress ahead the coal mining face tend to increases with the processing of excavation and the distance between the place of stress peak and the coal mining face increases with the decrease in the arch-shaped surrounding rock＇s depth-span ratio.