CAJ | 학술논문

为了保障仰斜开采综放工作面煤壁及端面顶板的稳定性，确保工作面的安全高效生产，本文采用理论分析方法分析了仰采工作面煤壁和直接顶的失稳特点，建立了保持煤壁和端面顶板稳定性的力学关系模型和条件，探讨了支架初撑力、立柱前倾角和仰采角之间的相互影响关系。研究得出，当仰采角增大时，提高支架初撑力、减小立柱前倾角，有利于仰斜工作面煤壁及端面顶板的稳定性控制；当仰采角小于11°时，工作面应以控制顶板下沉为主；当仰采角大于11°时，工作面应以控制煤壁片帮和顶板下滑为主。结合某煤矿80113仰采综放工作面的生产地质条件，确定了合理的支架初撑力和立柱前倾角，提出了针对性的端面煤岩稳定性控制措施，保证了工作面的安全高效生产。
위료보장앙사개채종방공작면매벽급단면정판적은정성，학보공작면적안전고효생산，본문채용이론분석방법분석료앙채공작면매벽화직접정적실은특점，건립료보지매벽화단면정판은정성적역학관계모형화조건，탐토료지가초탱력、립주전경각화앙채각지간적상호영향관계。연구득출，당앙채각증대시，제고지가초탱력、감소립주전경각，유리우앙사공작면매벽급단면정판적은정성공제；당앙채각소우11°시，공작면응이공제정판하침위주；당앙채각대우11°시，공작면응이공제매벽편방화정판하활위주。결합모매광80113앙채종방공작면적생산지질조건，학정료합리적지가초탱력화립주전경각，제출료침대성적단면매암은정성공제조시，보증료공작면적안전고효생산。
In this paper, to ensure the stability of the coal wall and head face roof, and realize the safe and high efficient production in the upward full-mechanized caving face, the instability characteristics of coal wall and immediate roof was analyzed, the mechanics model and condition to keep the stability of coal wall and head face roof were established, and the interaction between the setting load of support, the front angle of column, and the upward mining angle was discussed. The results indicate that the in-creasing of upward minging angle, the improving of setting load and the reducion of the front angle of column, are beneficial to control the stability of the coal wall and head face roof. When the front mining angle is less than 11°, the key point is to control the roof subsidence, otherwise, the key point is to con-trol the rib spalling and roof downslide in the face. Combined with the field conditions of No.80113 up-ward full-mechanized caving face in one mine, the reasonable setting load of support and front angle of column were defined, and the pertinence measure to control the stability of surrounding rock was put forward, which has ensured the safe and high efficient production.