浅埋煤层大采高工作面覆岩"两带"分布规律研究
Study on"two zones"distribution law of overlying rock in shallow coal seam with large mining height working face
摘要
为促进煤炭资源安全、高效开采,从大采高综采"两带"高度角度出发,以三道沟煤矿为工程背景,综合运用经验公式预估、相似模拟实验和现场实测验证,对 85216 工作面 5-2 煤综采时的覆岩"两带"高度演化开展研究.结果表明:"两带"高度与采高及碎胀系数有关,但经验公式预测"两带"发育高度存在一定的局限性;经过现场钻孔窥视探测,得到覆岩垮落带高度约 31.9 m,导水裂隙带高度约58 m;分析了大采高综采时覆岩破坏高度及垮落范围的分布情况,理论计算结果、"两带"高度相似模拟实验结果与现场探测结果较为一致.研究结果可为类似条件矿山的顶板管理等提供参考.
In order to promote the safe and efficient mining of coal resources,from the perspective of"two zones"height of fully mechanized mining with large mining height,with Sandaogou Coal Mine as the engineering background,comprehensive use of empirical formula prediction,similar simulation experiment and field measurement verification,research is carried out on the height evolution of overcover rock"two zones"during the fully-mechanized mining of 5-2 coal at 85216 working face.The results show that the height of"two zones"is related to mining height and crushing coefficient,but there are some limitations in predicting the development height of"two zones"by empirical formula.It is found that the height of overburden caving zone is about 31.9 m,and the height of water-conducting fissure zone is about 58 m.The distribution of overlying rock failure height and caving range during full-mechanized mining with large mining height is analyzed.The theoretical calculation results and the simulation results of"two zones"are in good agreement with the field detection results.The research results can provide reference for roof management in mines with similar conditions.
年，卷(期)：
2026, 45(10)
分类号：
TD325
机标分类号：
TD323
TD823
TD712
在线出版日期：
2026年10月29日
