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以酸刺沟煤为工程背景,采用数值模拟和现场实测等方法对6上105-2综放工作面矿压显现规律进行对比分析。研究表明:无煤垛和留煤垛条件下,随着工作面支架支护强度增大,煤壁片帮值和顶板下沉量均减小,相同支护强度条件下,留煤垛开采时,煤壁片帮值和顶板下沉量均较小,工作面支护效果明显优于无煤垛开采。
Taking acid acacia coal as the engineering background, the strata behaviors of 6 105-2 fully mechanized top coal caving mining face are comparatively analyzed by means of numerical simulation and field measurement. The results show that under the conditions of no coal bunker and coal retention, with the increase of supporting strength of support, the value of coal wall and the amount of roof subsidence decrease. Under the same support strength, , The value of coal wall film and roof subsidence are small, face support effect is obviously better than without coal mining.