不规则综采工作面收尾回采及保障技术研究与应用

Research and application of close-up mining and support technology for irregular mining face

针对车集煤矿2311不规则综采工作面终采线机尾超前机头62.9 m,收尾回采期间需进行长距离大幅度调斜、现有煤流运输系统制约生产等难题,研究了工作面停采位置优化、机尾大幅度调斜技术、端头大断面支护技术及刮板输送机动态调整技术,制定了工作面收尾回采方案与保障技术体系。实践证明,该方案成功实现了不规则工作面收尾回采,解决了大幅度机尾调斜、大跨度端头支护、设备下滑控制、煤流运输系统改造等难题,实现工作面终采线位置优化布置,多回收煤炭资源0.7万t,收尾期间机尾少对接支架3台,提高了工作面收尾作业效率,节约生产成本,增收经济效益630余万元。

In allusion to Juji Coal Mine 2311 irregular fully mechanized coal mining face to stop the end of the machine head 62. 9 m,during the period from the end of the mining period,it was necessary to carry out slanting of the long distance and existing coal flow transportation system,the stopping optimization position of the mining face,the tail large deflection control technique,the large section support technology of the end and the dynamic adjustment technology of the scraper conveyor,and formulated end face stoping scheme and support technical system. The practice proved that the scheme successfully realized the finishing of the irregular working face,which solved the problems of large tailing,large span end support,equipment downtime control,coal flow transportation system transformation,to achieve the optimal location of the working face to stop mining line,recovery of coal resources 7 thousand ton,the new economic benefits of more than 6. 3 million,the end of the tail of dock less 3 sets to ensure that the working face of harvest during the safe and efficient operation.