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一、急倾斜长壁工作面顶板运动特征近两年,在与一些现场合作项目中,对急倾斜煤层矿压显现规律进行了观测,其中属于壁式开采的有铁山南煤矿2111 (2) 伪斜正台阶工作面和马家沟8391—2直线工作面。观测表明,急倾斜长壁工作面也有较明显的周期性矿压显现。而且,由于大倾角和冒矸滚动对下部充填作用,在运动与发展过程中又具有自身的特殊性。
In the past two years, in the field cooperation projects with some steep slopes, the strata pressure pattern of the steep coal seam has been observed. Among them, there are 2111 (2) pseudopairs in the Tieshannan coal mine belonging to the wall mining. Inclined positive working face and Majiagou 8391-2 straight face. The observation shows that the sharply inclined longwall face has obvious periodic pressure. Moreover, due to the large angle of inclination and gangue roll to fill the lower part of the role, in the movement and development process has its own particularity.