CAJ | 학술논문

根据急倾斜煤层工作面顶底板地质赋存条件以及冒落矸石对工作面中下部采空区的充填特征，利用弹性薄板小挠度理论，建立了急倾斜工作面顶板的受力力学模型，研究了顶板在上覆岩层和下方充填矸石作用下顶板挠曲变形特征，得到急倾斜工作面下部采空区充填带宽度的理论计算公式和顶板变形挠度方程，结合龙煤集团七台河新铁煤矿工作面实际开采参数，分析出急倾斜工作面中上部顶板受力变形较大，下部顶板变形较小，最大挠度点距工作面上端头24 m处，最大变形量为320 mm，工作面中上部前方煤壁和后方煤壁处、上部顶板和中下部冒落矸石接触处将首先出现拉伸或剪切破坏，最后将形成“U”字型破断。研究结果与实际顶板受力变形相符。
근거급경사매층공작면정저판지질부존조건이급모락안석대공작면중하부채공구적충전특정，이용탄성박판소뇨도이론，건립료급경사공작면정판적수력역학모형，연구료정판재상복암층화하방충전안석작용하정판뇨곡변형특정，득도급경사공작면하부채공구충전대관도적이론계산공식화정판변형뇨도방정，결합룡매집단칠태하신철매광공작면실제개채삼수，분석출급경사공작면중상부정판수력변형교대，하부정판변형교소，최대뇨도점거공작면상단두24 m처，최대변형량위320 mm，공작면중상부전방매벽화후방매벽처、상부정판화중하부모락안석접촉처장수선출현랍신혹전절파배，최후장형성“U”자형파단。연구결과여실제정판수력변형상부。
Based on the geological occurrence conditions of roof and floor steep coal working face and the characteristics of middle and lower caving gangue filling of goaf, the force model of steep coal working face is established by using theory of elastic thin plate, flexure deformation characteristics un-der overlying strata and inferior goaf filling gangue are studied, and the theoretical calculation formula of goaf filling width and deflection equation of roof deformation is obtained. In light of the field para-meter at Xintie mine of Long Mine group in Qitaihe branch, the study have shown that in the steep in-clined working face, there is a larger deformation in the roof in the upper part and less deformation in the lower part;maximum deflection is 24 m away from working face end, with maximum deformation 320 mm;In the working surface of coal wall in the front and rear upper coal wall, roof and upper part of caving rock contact office will first appear to stretch or cause shear failure, finally will form an “U”type breaking. Research results conform to actual roof deformation.